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Упит dcterms_subject_txt:melioration area

515 items

  • Development of A Business Intelligence Tool For Accident Analysis in Mines

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)
    ... (Glowacki, 2008) developed at the U.S. National Institute for Occupational Safety and Health’s (NIOSH), which is the leading world organization in this area. At the beginning of June 2014, the Office of Mine Safety and Health Research (OMSHR) within NIOSH has announced the implementation of a taxonomy-based ...
    ... presented the use of an ontology-based tool in improvement of the analysis and reporting system with easy data access and query for users in mine safety area. We have demonstrated various possibilities that the use of such a business intelligence tool open, supported by a practical example of application ...

  • Split-Desktop software for the analysis of fragment size distribution of blasted rock mass

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović (2023)
    Drobljenje stena je najvažniji pokazatelj u proceni efekata miniranja pri proizvodnom miniranju u površinskoj eksploataciji. Stepen drobljenja stena ima veliki uticaj na efikasnost daljih operacija utovara, transporta, drobljenja i mlevenja. Optimalno drobljenje stena pri proizvodnom miniranju utiče na smanjenje ukupnih troškova proizvodnje. Stoga je pouzdana procena veličine drobljenja odminirane stenske mase veoma važno pitanje, ne samo u operacijama miniranja, već i u rudarskoj proizvodnji. Za predviđanje distribucije veličine komada odminirane stenske mase postoje različiti empirijski modeli. KUZ-RAM model omogućava ...
    Split-Desktop softver, drobljenje stena, miniranje, analiza, digitalna obrada fotografija

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit

    Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Kristina Šarić (2024)
    Čukaru Peki, epithermal mineralization, hydrothermal alterations

  • Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije

    Jelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar (2023)
    Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...
    mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacija

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... Durmitor Mountain area, Ministry of Agriculture, Forestry and Water Management of Montenegro, ISBN: 978-86-85799-22-8, COBISS.CG-ID: 17177348, pp. 256-302 Stevanović, Z., Petrović, B., Marinović, V., Radojević D., Samolov V. (2021): Geology and Hydrogeology of Studied Šavnik | Durmitor Area, In: Stevanović ...
    ... Dinaric karst published by IAH (Mijatović ed. 1983) helped to spread the knowledge and information about this “classical karst” as always attractive . area for hydrogeologists. “Karst Hydrogeology" by Petar Milanović (published in 1979 in SER; and 1981 in English) soon became not only an important reference ...
    ... Monograph 100 Years of hydrogeology in Yugoslavia“, Spec ed. of FMG, p. 273-288, Belgrade Žujovic )., 1931: Springs and wells. Water supply in rural area (in SER), Serbian Royal Academy, EFducational Library, b.5, Belgrade 15 CKH Naučno istraživačka delatnost Cemtra hidrogeologiju karsta za ...

  • Remedijacija otpadnih voda Rudnika prirodnim zeolitom

    Igor Veličković (2024)
    U radu je razmatrano prečišćavanje otpadnih flotacijskih voda sa područja rudnika Rudnik prirodnim zeolitskim tufom sa planine Jastrebac. Prečišćavanje otpadnih flotacijskih voda sa područja rudnika Rudnik prirodnim zeoliskim tufom sa obronaka planine Jastrebac pokazala se veoma efikasnom. Naime, u tri otpadne flotacijske vode utvrđen je povišen sadržaj arsena, hroma, gvožđa, mangana, kao i nikla. Jednostavnim tretmanom zeolitskim tufom iz ovih voda uklonjeni su svi ovi elementi. Sadržaji gvožđe i mangana su sniženi od 95 do 99 %, dok su ...
    flotation waste water, zeolite tuff, purification
    ... SUMMARY The paper discusses the purification of waste flotation water from the area of the Rudnik mine with natural zeolite tuff from the Jastrebac mountain. The purification of waste flotation water from the area of the Rudnik mine with natural zeolitic tuff from the slopes of the Jastrebac ...
    ... Geology, Belgrade, Serbia, pp. 760 (in Serbian, with extended abstract in English). 31 Janković, S., 1997. The Carpatho-Balkanides and adjacent area: a sector of the Tethyan Eurasian metallogenic belt. Mineral. Deposita 32, 426-433. Karamata, S., 2006. The geodynamical framework of the Balkan ...
    ... A., Cvetković, V., Šarić, K., Pačevski, A., Rosić, A., Erić, S. 2020. 'Waste rocks and medieval slag as sources of environmental pollution in the area of the Pb-Zn Mine Rudnik (Serbia) Journal of Geochemical Exploration, Volume 218, 106629. Zdravković, A., Cvetković, V., Pačevski, A., Rosić, ...

  • 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

  • Еоценска фауна југозападног дела Сирт басена (Либија)

    Љупко Рундић, Мери Ганић (2020)
    Еоцен, крупни мекушци, нумулити, ЈЗ Сирт басен, Либија

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... which inherit abstract ESRI classes Feature and Object. The central place is the abandoned_facility_registry class, which maps the data on a degraded area, and defines the titleholder by the relation to the class company. Like other attribute classes, it inherits the abstract class generic_attributes ...
    ... and video records collected during field visits. The spatial polygonal class abandoned_facility describes the geometric parameters of the degraded area: contour, surface, average bench heights, the overall depth of the pit, volume, as well as general data collected during the field visit related to ...

  • An oilfield in Libya: A new model to enhance waste water disposal

    Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković (2016)
    нафта, лежишне воде, припрема

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... and disadvantages to using both the raster and the vector data model to represent reality. Raster data sets record a value for each point in the area of interest, which may require more storage space than the representation in vector format that stores only the Ranka Stanković 66 necessary ...
    ... tectonic structures, faults, fold access, dyke or vein. − Two-dimensional polygons are used for geographical features that cover a particular area of Earth's surface. Such features may include lakes, park boundaries, buildings, city boundaries, or land uses. Each of these geometries is linked ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... deposit, “Ćeramide,” belongs to the Rudnik–Ljig volcanic area, within which three larger masses of effusive rocks have been isolated. However, Sarmatian quartzite- dacite effusive with accompanying pyroclastics predominates within the volcanic area [11]. Dacite deposit is of simple geological structure ...
    ... recently investigated UCS on composite samples. This study includes composites of sandstone and shale aimed at simulating tropical conditions that rule the area. Composite samples with the 10%, 20%, and 30% participation of weaker material of the overall sample height were prepared for the study, while gypsum ...
    ... UCS is calculated according to the following equation: σci UCS = P/A (1) where: P—maximum force at the moment of failure, A—specimen’s cross-section area. Triaxial tests were carried out by the current ISRM recommendations for this type of test [19]. A triaxial test was performed for five different values ...

  • Trace elements and garnet formation in a distal skarn zone: a case study of the Rudnik deposit, Central Serbia

    Bojan Kostić, Pavle Tančić, Natalija Batoćanin (2024)
    geohemija granata, retke zemlje, fluidne inkluzije, skarnovsko ležište Rudnik

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... Research [10] developed at the U.S. National Institute for Occupational Safety and Health’s (NIOSH), which is the leading world organization in this area. At the beginning of June 2014, the Office of Mine Safety and Health Research (OMSHR) within NIOSH announced the implementation of a taxonomy-based ...
    ... the use of an ontology-based tool in improvement of the analysis and reporting system with easy data access and query for users in the mine safety area. We have demonstrated various possibilities that the use of such a business intelligence tool opens, supported by a practical example of application ...

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... especially palaeoclimatic conditions. Characteristic species or index-fossils can provide valuable information about the climatic characteristics of an area, since certain species are specially adapted to cold or warm climate. Thus, for example, it can be concluded that during the Pleistocene, cold and ...
    ... more groups of small vertebrates or molluscs (fossil and modern), palaeontologists try to interpret the palaeoecological conditions of the researched area using different methods. Each of the described methods has its advantages and disadvantages. Therefore, it is useful to combine different types ...

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... in a low vacuum atmosphere using a Fine Coat Ion Sputter JFC-1100 unit (Jeol, Akishima, Tokio, Japan). Nitrogen adsorption. 'The specific surface area of the chars was determined with nitrogen adsorption by the Brunauer-Emmett-Teller method (BET) with an AUTOSORB-1 (Quanta- chrome Instruments, ...
    ... elements or functional groups in atomic % (at%) were determined with an error of > 10% as the fractions of signals normalized to the total signal area using empirical relative sensitivity factors. A charge correction was performed by setting the signal of the main C-C component of the C1s signal ...
    ... constant for calculating the conductivity had an error of about 10%. Results and discussion Scanning electron microscopy (SEM) and specific surface area SEM and BET were used to determine structural properties of the chars. Selected SEM images representing the main structural features found for different ...

  • Хазард од клизишта у Србији у 21. веку

    Biljana Abolmasov (2019)
    клизишта, хазард од клизишта, промене климе
    ... (Receiver Operating Characteristic), ›���  ������ � �������›������� �� ������, ›�›� ›������������, �� � ���� ������ �� ��������� �������� � ›���� (���. area under curve � AUC) ��›� � ›�����������, �� � ���� ›���›��� � ����›� ›���� [18]. 72 > > - ; > > > > > , > > , > y > > > > > > > > > > 5 10 15 , > ...
    ... > (Support Vector Machine SVM) [21]. > , > ). > > (ConfuGonohimgéncyx table [18], > > > > , > Receiver Operating Characteristic), > r >> > , > ( - area under clrve>» AUG 1 > > > [18]. ROC 73������ �� ›������� � ������ � 21. ��›� � � � � � � 2 . � � � � � �   � � � � � � � � � � � � ...