Претрага

Упит dcterms_creator_txt:Ana S. Mladenović

1087 items

  • Human factor risk management procedures applied in the case of open pit mine

    Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak (2021)
    Risk management aims to provide a controlled work environment to ensure the safe operation of the high-risk systems. It is a dynamic process which work in a continual state of change. The issue of human factor risk and rules and regulations in open pit mine is a main focus of this paper in order to develop predictive models of behavior of workers in relation to compliance with the procedures and rules. Presented survey was conducted in open pit coal ...
    Upravljanje rizikom, ljudski faktor, bager sa kašikom, metod konačnih elemenata

  • The preliminary selection of oil reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović (2021)
    geološko skladištenje CO2, naftna ležišta, Srbija, VIKOR, TOPSIS

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • 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)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... annual temperature 10.3 ◦C. Mean wind velocity for Kosovska Mitrovica is 1.9 m/s, and the most frequent blowing direction is north with an average velocity of 2.3 m/s and a northwesterly wind with an average velocity of 2.1 m/s [10]. MMCC “Trepča” has produced around 120,000 t of raw lead, 100,000 t refined ...
    ... Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić | Energies | 2016 | | 10.3390/en9110935 http://dr.rgf.bg.ac.rs/s/repo/item/0005080 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... waste deposits are similar [15]. Table 2. Chemical composition of the tailing waste deposits of Gornje Polje [16]. Tailing Pond Element (%) O Al Si S Ca Fe Zn As Ag Cd Sb Hg Pb Total Gornje Polje 47.41 0.21 1.94 17.42 3.51 27.86 0.27 0.92 0.00 0.11 0.35 0.00 0.00 100.00 The Ibar’s water quality for ...

  • Анализа трошкова откопавања руде олова и цинка у лежишту “Грот”

    Borislav Ugrinov (2024)
    У овом дипломском раду детаљно је приказан рудник Грот,односно рудно поље ,,Благодат,, које чине његова три ревира Ђавоља Воденица-Баре,Воденица II и Вучков ревир,са акцентом на анализу трошкова откопавања руде олова и цинка.Уводни део рада пружа нам ширу слику и даје опште информације о самом појму трошкова,његовом настанку и историјском развоју,затим о елементима фактора добитка који су усковезани за рударску производњу у које спадају укупан приход и трошковe. Након тога,неколико тачака тј. наслова посвећено је самом руднику Грот представљајући његове опште ...
    aнализа трошкова, Грот, Благодат,олово, цинк, рентабилност
    ... py,iHHKa y pa3MaTpaHOM HepHo)ly OcTBapHBaHa je cnejeha cpejia rpojlajHa IIeHTa KOHIIeHTpaTa KOJa H3HOCH: • 3a KOHeHTpaT OJIOBa407 S/t • 3J3a KOHHČHTpaT HHKHa275 S/t 30 5.06. AHAJIHJ3A TPIIIKOBA Y PYJIHHKY "TPOT" OcHoBa 3a ripopauyH TPpOIHKOB4a IIpOH3BOJIbe Cy HODMHPpaHH PpaJliOBH H MaTePpHJaJHH ...
    ... Tga=12 %/t OHepaTHBHH TDpOIHIKOBH OTKOIIABAMb54A4 CBeJIČčHH Ha je)]m·muy IIpoH3Bojta (t pyne) Tork.=6 S/t OneparunBnHu TpottKoBu IMC-a cnpenenHu Ha jenuHuity Ipou3nBojta (t pyne) Tnmc=6 S/t OneparTuBHu TpottikoBu uMcTpaxxXuBam»a cBeJteHH Ha jeJUHHHIIy IIpou3Boj/ta (t pyne) Tucr.=6 %/t ...
    ... Универзитета у Београду [ДР РГФ] Анализа трошкова откопавања руде олова и цинка у лежишту “Грот” | Borislav Ugrinov | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008773 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...

  • Димензионисање камионског транспорта јаловине на површинском копу Угљевик Исток 1

    Наталија Терзић (2024)
    Напредовањем рударења дошло је до потребе за експлоатацијом сложенијих и сиромашнијих лежишта, самим тим и повећањем трошкова.Профитабилна експлоатација лежишта минералних сировина захтева детаљну анализу свих техничко-економских фактора.Два најутицајнија фактора на профитабилност експлоатације руде јесу откопавање и транспорт, због тога је неопходно направити изводљив стратешки план који ће бити у складу са свим ограничењима и омогућити испуњавање свих планираних резултата.Транспорт на површинским коповима одвија се паралелно са осталим процесима експлоатације, стога је неопходно да сви системи буду усаглашени како не ...
    дисконтинуални транспорт, откривка, транспортне трасе, Тalpac, капацитет, камион, багер
    ... o0pactiy: T. =t,+t,+tmu +Titmi+ti+te[s] 45 rJe Je: tu — BpeMe yTOBapa KaMHoHa, (5S) tV — BpeME BO;KEbeC KaMHOHA (TIyHor H IHipa3Hor), (S) tmu — BpeMe MaHeBPpHcCatba HpH yTOBapy, (S) tmi — BpeMe MaHeBPpHCalba HpH HCTOB2Py, (S) ti — BpeMe HcTpecafPa, (s) tc — BpeMe ueKaMba KaMHOHA, (S5) ...
    ... Time - min/Cyce 28,68 Fleet Size s Average No. of Bucket Passes 5,00, yulage System Production per Year - tonne/Year 4246115 Discourtted Capital Cost S/tonne O,OD _ Loading Methodology Discounted Operating Cost S/tonne .00 Single sided Discounted Average Cost S/tonne 000 FuliTruck xcavatior ...
    ... Београду [ДР РГФ] Димензионисање камионског транспорта јаловине на површинском копу Угљевик Исток 1 | Наталија Терзић | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0009037 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...

  • Regional rockfall exposure assessment, experience from Serbia

    Miloš Marjanović, Biljana Abolmasov, Uroš Đurić, Jelka Krušić, Snežana Bogdanović (2022)
    Rockfalls are common in hilly and mountainous areas, especially along roads with engineered slopes and cuts. Such is the case for most of the state and local road routes in Central, Serbia, which was the subject in this case study. A road network of 276 km covering roughly 1700 km2 between the cities of Kraljevo, Čačak and Ivanjica is presented. Assessing of such wide areas needs to be conducted from large to site-specific scale, i.e., using GIS spatial tools ...
    CONEFALL, izloženost, GIS, odronjavanje, Srbija

  • Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate

    Ivana Božović (2024)
    Diplomski rad sa temom „Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate” sastoji se iz dva dijela, opšteg i eksperimentalnog. U opštem dijelu prikazani su: * Istorijski razvoj rudnika „Grot”; * Geografski položaj rudnika „Grot”; * Geološke karakteristike ležišta; * Mineralni sastav i strukturno-teksturne karakteristike; * Prikaz postupaka pripreme mineralnih sirovina koji se primjenjuje u pogonu; * Opis šeme procesa; U drugom dijelu ovog završnog rada prikazani su rezultati eksperimentalnih ispitivanja koja su obuhvatila: uzorak, mineralnu sirovinu, hemijske analize i tehnološka ispitivanja. Na kraju ovog rada dati ...
    flotacijska koncentracija, olovo-cinkova ruda, Grot
    ... Универзитета у Београду [ДР РГФ] Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate | Ivana Božović | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008765 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... kontakti presječeni su samo na nivou glavnog izvoznog potkopa na IX horizontu (1290 m). U zavisnosti od godišnjeg doba GIP-om je proticalo 70-110 l/s vode što je pravilo velike probleme pri transportu rude i ljudstva. Zato je kod pomoćnog potkopa u Hajdučkom Osoju u pravcu servis okna urađen paralelni ...
    ... Prilikom bušenja određenih bušotina sa površine i iz jame prilikom nailaska na tektonske zone dolazilo je do izviranja manje količine vode (<1 l/s) čiji se kapacitet vremenom smanjivao da bi posle nekoliko dana potpuno presušio. Na području Ciganske Čuke, u tektonski spuštenom bloku revira Đavolja ...

  • 2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem

    Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov (2019)
    2D inversion, geoelectrical method, Wenner array, ecology, Ada Huja
    ... STEVOVIĆ, S. (2016) The process of creation and analysis of the landfill gas from the landfill in the region of Pchinja. Journal on Processing and Energy in Agriculture, 20, pp. 63-68. https://earth.google.com/web 76 Sretenović B., Arnaut F., Vasiljević I., Cvetkov V. MITROVIĆ, S. (2014) Applied ...
    ... problem | Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov | Podzemni radovi | 2019 | | 10.5937/PodRad1934059S http://dr.rgf.bg.ac.rs/s/repo/item/0005531 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... Asbestos Because of its mechanical properties, asbestos was used in civil engineering from the beginning of the twentieth century. During the 1980’s health consequences were established (a vast variety of carcinogens and respiratory diseases) that were directly 2D geoelectrical resistivity tomography ...

  • Regulacija nivoa tečne faze u vertikalnim separatorima

    Katarina Šoštarić (2024)
    Ovaj diplomski rad bavi se regulacijom nivoa tečne faze u vertikalnim separatorima u industriji nafte i gasa. U radu su istraženi različiti metodi merenja nivoa, uključujući plovke, ultrazvučne i radarske senzore. Radarski senzori su se pokazali kao najefikasniji u teškim radnim uslovima, zahvaljujući njihovoj visokoj preciznosti i pouzdanosti. Rad uključuje teoretski pregled metoda merenja nivoa, detaljno poređenje prednosti i nedostataka različitih senzora, kao i studiju slučaja implementacije radarskog senzora u vertikalnom separatoru. Analiza rezultata i preporuke za buduća istraživanja ...
    Merenje nivoa, Vertikalni separator, Radarski senzori, Ultrazvučni senzori, Industrija nafte i gasa
    ... факултета Универзитета у Београду [ДР РГФ] Regulacija nivoa tečne faze u vertikalnim separatorima | Katarina Šoštarić | | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008797 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... elektromagnetne talase za merenje nivoa tečnosti bez kontakta, što ih čini idealnim za korozivne ili visoko viskozne tečnosti. Ultrazvučni senzori, s druge strane, koriste zvučne talase i često se primenjuju u skladištima i silosima. 2.3.2. Diskretno merenje nivoa (Singl Point Sensing Devices) ...
    ... Merenje KOLIČINE (ZAPREMINE) tečnosti ili usitnjenog materijala V u rezervoaru – na osnovu podatka o nivou hi ı poznatog poprečnog preseka rezervoara S: V= JS(h)·h Ukoliko je poznata i gustina tečnog ili usitnjenog materijala p moguće je izračunati njegovu masu: m=V·p 2.5. Primene merenja nivoa ...

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... , Coric, S., Basaric, I. and Jankovic, J. (2017). Geotechnical aspects of municipal waste landfill research and monitoring, Building Calendar (Građevinski calendar in Serbian), Vol. 49, Union of Engineers and Technicans of Serbia, 196-231. Rakic, D., Basaric, I., Caki, L. and Coric, S. (2018). ...
    ... Jovana Janković, Tina Đurić | 17th International waste management and landfill symposium, Proceedings SARDINIA 2019 | 2019 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005749 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"

    Saša Ivanišević, Dejan Radivojević (2018)
    геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија
    ... "Mokrin" field" | Saša Ivanišević, Dejan Radivojević | 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018 | 2018 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005449 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... reduction  in exploration, and also  to  the more  efficient planning of reservoir development and production.       ЛИТЕРАТУРА / REFERENCES    Ivanišević, S., Radivojević, D., 2018, Upper Miocene depositional environments of  the Kikinda‐Mokrin  high  (Serbia), AAPG  Interpretation  special  edition  “Ch ...
    ... PhD thesis, University of Belgrade ‐ Faculty of Mining and Geology, 167 pp.  Sztano, O., Kovač, M., Magyar,  I., Šujan, M., Fodor, L., Uhrin, A., Rybar, S., Csillag, G., Tokes, L., 2016,  Late Miocene  sedimentary  record  of  the Danube/Kisalfold  Basin:  interregional  correlation  of  depositional systems ...

  • Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model

    Miloš Marjanović, Stefan Milanović, Nikola Simić, Lazar Kričak (2024)
    The Majdanpek open pit mine south district is currently active mining prospect of copper ore exploitation in eastern Serbia. Its depth is approaching the termination depth and occurrences of large-scale instabilities and global instability of the final pit slope is possible. These can generate catastrophic mass movement inside an area that encloses a regional road route and the Pek River bed which is channelled along the outer contour of the pit. The displacements that were noted in early 2023, in the ...
    displacement, survey, inverse velocity, open pit

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... Congress of the Geologists of the Republic of North Macedonia, Ohrid, Republic of North Macedonia, September 27-28, 2024 | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0009109 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... 2020: The Potential Use of Geophysical Methods to Identify Cavities, Sinkholes and Pathways for Water Infiltration. Water , 12, 2289. Milanović S., Vasić LJ., 2016: 3D Conduit modelling of leakage below a dam situated in highly karstified rocks. In: Stevanovic Z, Krešić N & Kukuric N (eds) ...
    ... 2020: Geophysical seismic mapping inside the investigative galleries at dam site. Minutes of the Serbian Geological Society. LJ., Milanović S., Puskas-Preszner A., Palscu L., 2020: Determination of the groundwater-leakage . mechanism (binary mixing) in a karstic dam site using thermometry ...

  • Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia

    Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović (2019)
    Europe industry has growing concerns on availability of the raw materials. To address this challenge, the European Commission has created a list of critical raw materials for the EU, launched EIT Raw Materials initiative, and continuously support research projects (like INTRAW, UNEXMIN etc.) with the aim of reducing the dependency and meeting growing demands. In the last 15 years Serbia is experiencing new bust in geological exploration of mineral deposits. Currently 167 exploration licenses are active, covering approximately 6000 ...
    Groundwater, Raw materials, Lithium, Mining, Field hydrogeology

  • The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area

    Vladimir Živanović, Igor Jemcov, Nebojša Atanacković (2022)
    Groundwater vulnerability maps represent an essential tool for protecting karst groundwater resources. Vulnerability assessment is usually based on spatial evaluation of various parameters that affect the vulnerability degree and regulate the protection role of the unsaturated zone. Most of these parameters, like soil and geology conditions, are constant and do not change during the year or over several years. In contrast, some parameters, such as the groundwater level, depend on the variability of recharge conditions. By considering the variability ...
    karst groundwater vulnerability maps, parameter changes, Perućac spring, Serbia

  • Distribution of Potentially Toxic Elements in the City of Zintan and Its Surroundings (Northwestern Libya) by Surface Soil Sampling

    Boris Vakanjac, Zorana Naunović, Vesna Ristić Vakanjac, Tanita Đumić, Saša Bakrač, Jana Štrbački, Vuk Gajić, Taher Mohamed Alzarog (2023)
    The study area is the city of Zintan, in northwestern Libya, which has grown over the past 30 years. Its current population is roughly 30,000. Although the city is in part commercial, most of the population engages in agriculture and primarily grows cereal crops (wheat and barley). The demand of the growing city for agricultural products has increased, intensifying the use of fertilizers, pesticides, and insecticides. Consequently, concentrations of potentially toxic elements (PTE) in the soil have increased. To ...
    Geologija, Geotehničko inženjerstvo, Inženjerska geologija

  • Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes

    Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)
    Earth-Surface Processes

  • Stepen metamorfizma metaklastita rudnika

    Vanja Ćuk (2024)
    Zadatak ovog rada je bio, potvrda saznanja da se na planini Rudnik dogodio kontaktni metamorfizam gornjokrednih sedimentnih stena i da se ispita intenzitet kontakto-metamorfnih promena. Posle kraćeg opisa geografskog položaja, pregleda ranijih istraživanja i geologije šireg područja, usmerena je pažnja na petrološka ispitivanja metaklastita i na kontaktno-metamorfne facije. Usled stvaranja različitih vulkanogenih facija odnosno usled vulkanskih erupcija, delovanjem zagrejane magme (lave) ili zagrejanih fluida, došlo je do kontaktnog metamorfizma, na granici oligocen-miocen i do stvaranja različitih metamorfnih stena, a ...
    Kontaktni metamorfizam, Rudnik, metakonglomerati, metapeščari, metaalveroliti