Претрага

Упит dcterms_subject_txt:Sustainability and the Environment

2794 items

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)
    ... mining: Sustainability, Mine closures and Social Mitigation Measures", 2006; [4] Saaty, T.L., 1994. Fundamentals of Decision Making and Priority Theory with the AHP. RWS Publications, Pittsburgh, PA, USA. [5] Saaty, T.L., 1990. An exposition of the AHP in reply to the paper ‘remarks on the analytic ...
    ... consistency and that the assessment can be continued. If the consistency ratio is above 0.10, then the judgments are considered inconsistent. For each level in the hierarchy it is necessary to know whether the pair-wise comparison has been consistent in order to accept the results of the weighting ...
    ... 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.rs EVALUATION AND PERSPECTIVES OF UNDERGROUND ...

  • The final closure of the Vardar Ocean: paleomagnetic, AMS and structural results

    Emö Márton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2020)
    ... sediments and Oligocene–Lower Miocene igneous rocks representing the areas bordering the Sava zone from the westernand eastern sides, respectively and from the upper Cretaceous flysch deposited in the Sava zone. In the areas W and E of the Sava zone, respectively, the primary remanences of the igneous ...
    ... 30°. The sediments carry secondary magnetizations,imprinted during magmatic activity. Compared to the areas flanking it, the sediments of the Savazone were intensively folded during the Upper Cretaceous and Paleogene and the paleomagneticsignals, which exhibit smeared distribution close to the present ...
    ... CW rotation of the flanking areas and the general NE-SW orientation of thecompressional stress field outside of the zone. Acknowledgement. This work was financially supported by the National Development andInnovation Office of Hungary, project K 128625 and by the Ministry of Education and Science of t ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • FTIR Spectroscopic Study Of S-Metolachlor Sorption On Inorganic And Organically Modified Montmorillonite From Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... through the interaction between the aromatic benzene ring of S-metolachlor and the aromatic benzene ring of the organic complex (π-π bonds). Also, the formation of a hydrogen bond occurs between the molecules of S-metolachlor and the molecules of water that are in the interlayer space and/or oxygen ...
    ... spectroscopy data showed that the hydrogen bond is one of the most important mechanisms that occur between Na-montmorillonite and S-metolachlor. Comparing the FTIR spectra of herbicides before and after the sorption, it can be concluded that carbonyl group participate in the binding process. Sorption ...
    ... S-metolachlor on HDTMA-montmorillonites causes the redshift of the C = O absorption band. Shifting to lower wavenumbers and joining with the deformation vibration band of water indicates that the C = O group participated in the formation of a bond with the montmorillonite. Sorption of S-metolachlor ...

  • Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction

    Velislava Stoykova, Ranka Stanković (2018)

  • Examination and characterization of nanostructured Co0.9Ho0.1MoO4

    Милена Росић, Маја Милошевић, Мариа Чебела, Владимир Додевски, Весна Лојпур, Марија Васић, Александра Зарубица (2023)
    ... Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia The nanostructured powderwas synthesized by the glycine nitrate procedure (GNP) because it proved to be the most effective and simplest method suitable for controlling the composition and morphology of Coo ...
    ... 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.rs Serbian Ceramic Society Conference ADVANCED CERAMICS AND APPLICATION ...
    ... Advanced Ceramics and Application : New Frontiers in Multifunctional Material Science and Processing (11 ; 2023 ; Beograd) Program ; and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian ...

  • English for Geology Students. 2

    Lidija Beko (2023)
    Engleski jezik
    ... be taught and arranged. Furthermore, we aimed to make the text and the space around it aesthetically pleasing from the very beginning, introducing decorative components wherever possible, as well as trying to confi- gure the chapters in such a manner that students can easily spot and absorb key ...
    ... different ways and through consistent work. I would like to use this opportunity, as with the first textbook, to express sincere and deep gratitude to al]i those who helped me to prepare for the work of writing the textbooks. Those are, first and foremost, all my colleagues from the Faculty of Mining ...
    ... sness and kindness selflessly helped me in all segments of making the textbooks and to whom 1 owe a lot of knowledge aboutlanguage, art and culture.1 use this opportunity to extend a big and heartfelt “thank you” to him. Wulfenite > 10 . Part3 NMetals and gemstones All three of the basic ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... times тт the lifetime ој the mine. The purchasing and the operational costs of auxiliary machihnes are high, and тп the 10141 cost of coal excavating mehtioned cost are fFom about 1.5-2 6 АП this points to the importance of choosihng adequate туре of bulldozer. 4lso, this paper defines the optimal bulldozer ...
    ... ореганпр оп open-cast mines. Failure is a condition when the machine completely or partially loses operating capability and it is unable to meet the task requirements and function, as established by the machine design and specifications. One of the most important reliability indicators is failure frequency ...
    ... correlation of time categories — time in operation, time of planned and non-planned stoppages. It the availability is lower than this value than should be more of the machines in the fleet of the open cast mine, thus increasing the costs. On the other hand, insufficient number of machines (dozers) will result ...

  • Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin

    Filip Anđelković, Dejan Radivojević (2018)
    ... Matenco, L. Radivojević, D. 2012. On the formation and evolution of the Pannonian Basin: Constraints derived from the structure of the junction area between the Carpathians and Dinarides. Tectonics 31 (6), TC6007. Radivojević, D., Rundić, Lj. 2016. Synrift and postrift Miocene sediments of northern ...
    ... that normal faulting migrates in time and space and took place on a wide Miocene time interval (roughly 20–5.5 Ma) (Matenco and Radivojević, 2012). The most prolific source rocks in Serbian part of Pannonian Basin are marls and limestones of the Sarmatian and Pannonian (Kostić, 2012). Besides this ...
    ... ć and Radivojević, 2018; Radivojević and Rundić, 2016) one can conclude that the main source rock is of Pannonian age. Those rocks correspond to the Endrőd formation hemipelagic marls, one of the source rocks at the largest hydrocarbon field in Hungary – Algyő field (Magyar et al., 2006). The marly ...

  • Palaeoflora of Kamenica (Pranjani Basin, western Serbia)

    Zorica Lazarević, Ljubica Milovanović, Jelena Milivojević, Ivana Vasiljević (2019)
    Palaeofloras of the Paleogene in Serbia are relatively rare, especially in comparison with floras from Neogene sediments. Most Paleogene phytoas sociations from the territory of Serbia existed in a dry and warm climate. The youngest Paleogene phytoassociation originates from the Pranjani Basin (Western Serbia), locality Kamenica. The age of this palaeoflora is determined as Late Oligocene. This fossil plant assemblage is different from other Paleo gene phytoassociations.The palaeoflora from Kamenica is characterized with leaf imprints larger than in other ...
    макрофлора, млађи олигоцен, Прањански басен, Каменица
    ... NW–Se faults and later ruptures of e-W and some of Ne–SW trends, controlled the formation of the Graben and its geometry. a characteristic of the Zapadna Morava Graben is the large subsidence of the Ottnangian-Karpatian, probably superposed upon similar movements of the Oligocene-Miocene. The central Graben ...
    ... tuffits. The third horizon consists of marls and shales (ereMIja et al., 1977). The fossil fish Smerdis minutus (BLaINvILLe) (aN - đeLKOvIć, 1989) was found in the first horizon’s marls. This finding confirms the Oli gocene age of the sediments. The remains of the fossil plants, which are the subject ...
    ... from the same sediments. Based on fossil fish finding and comparison with other similar early Miocene floras, the deposits of the first horizon probably correspond to the upper parts of the Late Oligocene-early Miocene. The Zapadna Morava Gra ben, also known as the Čačak-Kraljevo Basin, is the largest ...

  • Анализа стања квалитета ваздуха у граду Суботици за период од 2020. до 2023. године

    Филип Величковић (2024)
    Овај завршни рад истражује концентрацију честица PM2.5 (честица са пречником мањим од 2,5 микрометра) и PM10 (честица са пречником мањимод 10 микрометара) у Суботици, и говори какав негативан утицај имају на здравље становништва.Пре тога је објашњена општа прича о аерозагађењу и саставу ваздуха, укључујући опис свих критеријумским загађивача, законској регулативи што се тиче квалитета ваздуха и дате су неке основне информације о агломерацији Суботица. Коришћени су подаци о концентрацији РМ2.5 и РМ10 честица прикупљени током истраживања ваздушног квалитета у ...
    ваздух, честице, PM2.5 , PM10, здравље
    ... 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.rs 'VnuBep3arer ...
    ... HauHHa KaKO Jby)H H HpHpojia aaraljyJy Ba3/lyX. 12 REACTIONS TOSUNMLIGHT „ | / EMISSIONS CONCENTRATIONS MAN-MADE AND MPACTS ON PEOPLE NATURAL SOURCES AND ENVIRONMENT Cnuka 6 — J3azabetnbe 6a30yxa IIocroju BHmre nonena 3araljaBaua Ba3jlyXa. 1. TIpea npupoju 3aralbuBaua nozryraHTH Mory ...
    ... 5) 8. Air quality in Europe — 2020 report( https://www.eca.europa.eu/publications/air-quality-in-europe-2020-report) 9. European Environment A gency — Air and climate 10.KpBajnnrer Ba3lyxa Ha TepuHTopujH rpana Cy0orume (https://subotica.ls.gov.rs/zastita-zivotne-sredine/monitoring-stanja-zivotne- ...

  • Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia

    Nebojša Atanacković, Vladimir Živanović, Jana Štrbački, Veselin Dragišić, Ivana Cvejić (2022)
    The physical and chemical properties of groundwater, together with the groundwater levels regime and rock hydraulic properties, are often used to understand and conceptualize the hydrogeological system. Prediction of the influence of mining works on groundwater, and vice versa, is a challenge due to significantly altered groundwater flow patterns in the raw materials exploitation areas in relation to natural conditions. Therefore, multiple parameters are assessed and monitored before and during exploitation to properly characterize and quantify the system for ...
    mine water, hydrogeology, multivariant statistics, groundwater inflow, water quality

  • Clockwise rotation in the Serbian segment of the Vardar zone and in the Danubicum of Eastern Serbia - tetonic implication

    Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Tomić (2015)

  • Serbian Society of Geomorphologists

    Dragana Đurić, Jelena Ćalić (2019)

  • Strain Partitioning Around an Indenter During Oroclinal Bending: Inferences From Field Kinematic Study And Analogue Modeling with Application to the European Carpatho-Balkanides Orogen

    Nemanja Krstekanić, Liviu Matenco, Ernst Willingshofer, Marinko Toljić, Uroš Stojadinović (2021)

  • Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia

    Maja Milošević, Bojan Kostić (2022)
    ... application in the future. Characteristic properties of the sample were determined by chemical analysis, infrared spectrophotom- etry (Milošević and Logar, 2014; Milošević, 2011), differential thermal analysis (DTA) and X-ray diffrac- tion (powder, oriented, saturated and heated). The physical properties ...
    ... 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.rs Geologica ...
    ... capacity (CEC) and specific surface area (SSA) measurements. The sample consists mostly of a fraction <1 μm (56.1%) with a 9.5% <2 μm, representing a total clay content (65.5%). Coarse grain fraction (>20 μm) is present in a total of 10.5%. When the clay, silt and sand content were plotted on the triangular ...

  • Using gravity data to define structural correlation affecting the formation of Neogene basins

    Snežana Ignjatović, Ivana Vasiljević, Branisav Sretković, Milanka Negovanović (2023)
    A gravity survey can help to define the structural correlation in the study area. The structures that have influenced the development of Neogene basins can be defined using gravity data. By applying mathematical transformations to gravity data, the geological structures (faults, nappes, etc.) that impacted the formation of Neogene basins can be defined. We have taken the part of the Dinarides as the test region. The paper presents the results obtained using the procedure residual, vertical gradient, and total ...
    gravity survey, mathematical transformation, basin

  • Alpine tectonic evolution of the Northern Serbo-Macedonian subunit: inferences from kinematic and petrological investigations

    Bojan Kostić, Uroš Stojadinović, Nemanja Krstekanić, Marija Ružić, Aleksa Luković (2021)
    ... metamorphicsagainst the low-grade metamorphics of the Carpathians Supragetic Unit. The contact is marked bythe E-dipping shear zone that can be traced along the eastern margin of Serbo-MacedonianMassif, from the Vršac Mts in the north, across the Jastrebac Mts and further towards the south inthe Central ...
    ... sub-unit adjacent to the Dinarides and Carpathians. The recenttectonic uplift of the Vršac Mts occurred in the Middle to Late Miocene along the WSW-dippingnormal faults that control deposition in the adjacent Zagajica depression. The ENE-WSW oriented extension, which was triggered by the retreat of Carpathian ...
    ... Aegean Sea in the south. Structurally, it comprises the innermost segments ofthe Dacia mega-unit of the European affinity and is juxtaposed against the Adria-derived units ofthe Dinarides across the Adria-Europe zone of collision. The peak metamorphic event in the Serbo-Macedonian Massif is Variscan in age ...

  • Replica of the “Great Triangle Gold Nugget” Belonging to Belgrade University Collection, Gilded or Not?

    Alena Zdravković, Maja Milošević, Ivana Jelić (2021)
    ... from the 19th century and to determine its value and significance, it was important to examine the composition of its golden metallic colour surface. Since the gold colour and shine remained the same, did not darken by the time it was assumed that the model is gilded. Material and method ...
    ... removed from the surface and glued onto a graphite strip, without covering. Chemical analysis was performed on unpolished pieces, using the EDS detector and the internal standards. Historic background The gold nugget was mined in the Southern Ural, in the gold-bearing sands of the Tachkou-Targanka ...
    ... of Rocks and Minerals), but with no information of the number of the replica made, and the type and manner of material that was used for covering. Result and conclusion The data obtained by EDS analysis show that the gypsum model is covered with gold leaf, which was expected according ...

  • Numerical modelling of the roughly simultaneous emplacement of two distinct ophiolite belts

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)