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Упит dcterms_subject_txt:hydrogeological characteristics

413 items

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Novi koncept izrade Osnovne hidrogeološke karte Srbije

    Igor Jemcov, Zoran Stevanović, Vladimir Živanović, Saša Milanović, Dušan Polomčić, Veselin Dragišić (2022)
    Osnovna hidrogeološka karta (OHGK) predstavlja bazični dokument u hidrogeologiji, a ima za cilj sagledavanje osnovnih tipova izdani što da omogućava sagledavanje podzemnih vodnih resursa na području obuhvaćenom kartom. Primena postojećeg Uputstva za izradu Osnovne hidrogeološke karte SFRJ 1:100.000 (iz 1984, odnosno 1988. godine), vezana je za brojne poteškoće, što je uslovilo da je u proteklom periodu od 30 godina bilo je više inicijativa za formiranjem novog Uputstva. Sagledavajući postojeću situaciju uz činjenice o savremenim trendovima razvoja hidrogeoloških karata u ...
    Osnovna Hidrogeološka Karta, koncept izrade OHGK, harmonizovana legenda OHGK

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... network branches. The results are shown in the canonical ventilation scheme in Fig. 11. After the aerodynamic characteristics of the ventilation system were established and the characteristics of the main fan were defined, the simulation routines of SimVent were used for the calculation of airflow volume ...
    ... users are often unable to determine solutions for poorly or unfavorably estimated characteristics. In order to solve this problem VENTEX offers suggestions with concrete measures for improvement of certain characteristics as well as the overall mine ventilation state. By simply activating the command ...
    ... bute approach is often mapped into the frame/slot paradigm, which can be successfully used for its implementation.2,11 In the same way, the characteristics of an object are represented by its attributes, and frame characteris- tics are represented by its slots. Namely, slot values describe attributes ...

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer

    Saša Milanović (2019)
    Geochemistry and Petrology

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... Bpasmr Cnnuka 11. Pesaep6e eneMenama pemkux aeMa/ba y ceemy 2020. zoouna. Hsaop: Characteristics of Some Selected Methods of Rare Earth Elements Recovery from Coal Fly Ashes (Rybak, A. and Rybak, A., 2021). Characteristics of some selected methods of rare earth elements recovery from coal fly ashes ...
    ... Cauka 11. Peaepge eneMenama pemkux aeMa/ba y ceemy 2020. zoouna. Hsiaop: Characteristics of Some Selected Methods of Rare Earth Elements Recovery from Coal Fly Ashes (Rybak, A. and Rybak, A., 2021). Characteristics of some selected methods of rare earth elements recovery from coal fly ashes ...
    ... , 2021. Characteristics of some selected methods of rare earth elements recovery from coal fly ashes. Metals, 11(1), p.142. Ta6ena 8. Peauue no0oamaka o MeM0pancku.M emooa.ua 3a onopa6ak eneMeHama [REE}]. Hs6op: Ta6ena je npeyaema u3 paoa: Rybak, 4. and Rybak, 4., 2021. Characteristics of some selected ...

  • Stratigrafska pozicija i vulkanološke karakteristike andezita ležišta Čukaru Peki

    Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Siyuan Chen, Aleksandar Pačevski, Kristina Šarić (2022)

  • Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije

    Vladimir M. Simić (2003)
    Kaolinitske gline predstavljaju jednu od privredno najznačajnijih nemetaličnih mineralnih sirovina u Srbiji. Ležišta tih glina odavno se istražuju i eksploatišu u Aranđelovačkom i Kolubarskom basenu i basenima vlašićkog antiklinorijuma. Osim toga, u većem ili manjem obimu istražene su mnoge lokalnosti, a na nekima od njih vršila se povremena eksploatacija. Dosadašnja istraživanja kaolinitskih glina imala su, međutim, prevashodno uzak istraživački cilj - utvrđivanje rezervi glina određenog ležišta, dok su istraživanja regionalnog karaktera bila malog obima i vezana za delove pojedinih ...
    prognozna ocena, resursi kaolinitskih glina, sedimentni baseni, Srbija, geologija, mineralogija, kvalitet, potencijalnost

  • Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts.

    Dejan Prelević, Ana Mladenović, Violeta Gajić, Milena Dunčić, Blažo Boev (2024)
    Tethys closure, Scaglia Rossa, intracontinental basalts
    ... Sr, Nd, Pb isotopes) of within-plate basalts [1]. In this contribution, we will present and discuss new findings on the sedimentological characteristics: of the sediments associated with basaltic magmatism in the Klepa Mountains, as well as the structural evolution of the basement formations ...
    ... paleontological obscrvations suggest continuous sedimentation from the late Santonian to carly Maastrichtian in this area. Palacoecological · characteristics _ of · the planktonic foraminiferal association indicate relatively deep sedimentation (~300 m) of the studied limestones, with periodic changes ...

  • Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data

    Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković (2024)
    geochronology, zircon, provenance
    ... Mass (Europc). These formations consist of basalts, lamprophyres, trachybasalts, and andesites, none of which exhibit ophiolitic geochemical characteristics. They display heterogencous geochemical affinities, primarily derived from the (metasomatized) continental lithospheric mantle. Notably, thcre ...
    ... into the final stages of the Tethyan occanic realms and the Europe-Adria collision in the Balkans. Thce heterogencity in the geochemical characteristics: of the Cretaceous igneous formations on ecither side of the Sava-Vardar suture zone underscores the influence of distinct mantle sources during ...

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Correlation Between Dynamic CBR and Compaction and Bearing Capacity of Pavement Foundation Layers

    Milan Bogdanović, Snežana Bogdanović, Dragoslav Rakić, Irena Basarić Ikodinović (2024)
    This paper presents a dynamic California Bearing Ratio (CBRd) device that can be used on a prepared pavement foundation layer to obtain a certain parameter of the tested material in the laboratory and in situ in a direct and fast way. For the selected natural material (gravel), it is shown that the laboratory CBRd can be used to estimate the compaction and bearing capacity, because it correlates well with the parameters of the standard and modifed Proctor compaction tests. ...
    korelacija parametara, donji slojevi saobraćajnica, laboratorijska i terenska ispitivanja, dinamički kalifornijski indeks nosivosti CBRd
    ... identified the participation of individual fractions: 1.4%-1.8% clay and silt, 43.2%-46.2% sand, and 52.5%-55.4% gravel. The basic compaction characteristics were determined by the standard and modified Proctor com- paction tests in accordance with the SRPS EN 13286-2:2012 standard. The tests were ...
    ... were performed by com- pacting the prepared samples in a cylindrical mold with a diameter of 150.0 mm. The following material characteristics were determined by testing. The maximum dry bulk density was determined as follows: Pdmax (SP) = 1.97 Mg/m* and pqmax (MP) = 2.06 Mg/m* at the optimal water ...
    ... than static CBR, this is the only method that can be used in the laboratory to determine the re- quired CBR, values related to the compaction characteristics. Under field conditions, it is possible to estimate the soil compaction by comparing the in-situ CBR, results with predefined minimum values ...

  • Cutting elements of bucket wheel excavators in lignite opensast mines: Methodology and performed solutions

    Dragan Novaković, Predrag Jovančić (2016)
    Bucket and cutting elements geometry (teeth and hardened steel) have very powerful impact on effective operation of bucket wheel excavator, and that`s why, problems of optimal geometry of elements in specific conditions always are of special interest in mining science and technique. If we want to achieve satisfactory utilization of bucket wheel excavator, it is necessary to modulate geometry material characteristics and technological parameters, as regards bucket wheel excavator work regime, and bucket wheel working performances, and also bucket ...

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... Complex Krupaja Hydrogeological Karst System (Eastern Serbia) Ljiljana Vasić, Saša Milanović, Tina Dašić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System ...
    ... Complex Krupaja Hydrogeological Karst System (Eastern Serbia) Ljiljana Vasić 1,*. Saša Milanović ! and Tina Dašić ? Q check for updates Citation: Vasić, L.; Milanović, S.; Dašić, T. Definition of Circulation 'Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System ...
    ... runoff. Our research included analyses of the hydrochemical characteristics of the water for all three phenomena during, one hydrological year (summer and autumn 2015, winter and spring, 2016, basic physical and chemical characteristics and ionic composition of water), Sustainability 2023, 15 ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Određivanje zbijenosti starog komunalnog otpada

    Jovana Janković, Dragoslav Rakić, Irena Basarić Ikodinović, Tina Đurić (2021)
    Bez obzira na savremene tretmane komunalnog otpada u svetu, u Srbiji je i dalje najčešći vid odlaganja na komunalne deponije, pa zbijanje otpada predstavlja jednu od ključnih faza formiranja deponije. Na ovaj način znatno se smanjuje zapremina otpada, ubrzava proces degradacije i produžava radni vek deponije. Zbog toga su geotehničke karakteristike komunalnog otpada prilikom zbijanja, veoma bitne kako u fazi projektovanja tako i u fazi izgradnje deponije i optimizacije prostora. Tu se pre svega misli na maksimalnu suvu zapreminsku ...
    komunalni otpad, deponija, Proktorov opit, optimalna vlažnost, maksimalna suva zapreminska težina

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... classification, general maintenance data, structure (components) and technical characteristics. The goal is to create a database of available equipment, which will organize, in a unique way, data on construction characteristics, behavior during exploitation, and the like, for different purposes, such as ...
    ... characteristic for bucket wheel excavators are, for example, the number of buckets, the length of boom, whereas examples of their technological characteristics are excavation speed and slewing speed. The class Oprema is used for modeling all types of specific equipment (excavation machinery, conveying ...
    ... excavators is selected, followed by detailed data such as the label, manufacturer, operational number, year of commissioning, etc. Technical characteristics of the selected excavator are entered on the panel depicted in Figure 6. 7 The software solution realized in this way enables linking ...

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • Утицај реактивираних раседа на развој крашког процеса: примери из Карпато-балканида источне Србије

    Ана Младеновић (2022)
    Carpatho-Balkanides represent part of the complex Dinaric-Carpatho-Balkan orogenic system, that geomorphologically dominates the central part of the Balkan peninsula. The existence of this orogenic system is a result of closure of the Neotethys ocean and subsequent convergence of the Adriatic microplate and the Eurasian continent, that has been still active in the recent times. Such geodynamic characteristics conditioned complex tectonic structures, multiply reactivated during Late Cretaceous and Cenozoic. The main aim of this research is to determine impact of ...
    Карпато-балкански ороген, реактивирани расед, спелеолошки објекат, крашки процес