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Упит dcterms_subject_txt:in situ

366 items

  • Palinomorfe sa lokaliteta Gostuška reka (Stara planina)

    Ivan Rutović (2024)
    U radu su prikazani rezultati palinološkog istraživanja permsko-trijaskih sedimenata sa lokaliteta Gostuška reka. Palinološki kompleksi su detaljno analizirani, što je omogućilo morfološku, taksonomsku i paleoekološku identifikaciju palinomorfi. Istraživanje je pokazalo prisustvo velikog broja spora i polena golosemenica, dok je polen skrivenosemenica zastupljen u manjem procentu. Na osnovu paleoekoloških analiza, zaključeno je da je tokom formiranja sedimenata na lokalitetu vladala aridna klima, sa povremenim vlažnim fazama koje su omogućavale razvoj močvarne vegetacije.
    palinomorfe, paleoekologija, perm - trijas, Stara planina, Gostuška reka
    ... succession in the subsurface of Israel, Jerusalem, str. 8 — 50 Evelyn Kustatscher, Francesca Valleć, Barbara Lanthaler, Roberta Branz, Christoph Hartkopf-Freder, Nuskoisporites dulhuntyi from the Cisuralian and Lopingian of the Southern Alps: A morphological comparison between dispersed and in situ prepollen ...
    ... Palynology, Volume 329. https://doi.org/10.1016/J.revpalbo.2024.105157. eyfullah, L.J., Kustatscher, E. & Taylor, W.A. 2013. The first discovery of in situ Verrucosisporites applanatus spores from the Middle Triassic flora from Bromsgrove (Worcestershire, UK). Review of Palaeobotany and Palynology ...
    ... , Neri, C. & Venturini, C. 2000: Permian of south Europe and its interregional correlation. (In: Permian-Triassic Evolution of Tethys and Western Circum-Pacific. H.Yin et al, editors). Developments in Palaeontology and Stratigraphy, Vol. 18, p.p. 37- 70. Clark, R.F.A. 1965. British Permian saccate ...

  • Испитивање магнетске сусцептибилности прашине антропогеног порекла

    Дубравка Новичић, Весна Цветков, Весна Дамњановић (2019)
    ... potreban veliki set uzoraka kako bi se pronašli „prosečni“ ili „tipični“ uzorci za druge, skuplje analize ili analize koje dugo traju. Merenja vršena in situ, na terenu, ubrzavaju proces povezivanja podataka sa terenskim opservacijama, što je veoma važno za ljude koji rade u udaljenim područjima daleko ...
    ... [2] Márton, E., Lesić, V., et al. (2012). First magnetic measurements on PM10 filters from two stations in Serbia and comparison of the results with those from nine Hungarian stations. In: Geosciences and Environment. The 3rd International Professional Conference, 27-29 May 2012, Belgrade, Serbia ...
    ... 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 Vazduh VII Memorijalni naučni skup iz ...

  • Hydrogeochemistry of Uranium in the Groundwaters of Serbia

    Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić (2015)

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • 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
    ... Neogene basins (yellow shaded areas) and the location of the paleontolog- ical site Kamenica (pink dot) in the vicinity of a steep (gravitational or reverse) fault of Se–NW direction. The Paleogene and Neogene deposits in last few years were investigated from different aspects (e.g. đOrđevIć-MILuTINOvIć ...
    ... configuration of the basin basements and surrounding geology, im- plying a relatively shallow basin depth. The location of the Kamenica paleontological site is in a zone of abrupt changes of gravity anomaly values, probably ZoricA LAZArEVić, LjUBicA MiLoVAnoVić, jELEnA MiLiVojEVić & iVAnA VASiLjEVić Geol ...
    ... broad-leaved evergreen vegetation. In these palae- ofloras Lauraceae, especially Daphnogene predom- inate. conifers are more abundant in the Kamenica palaeoflora than in most of the early Miocene floras of Serbia. during the early Miocene paleoclimatic conditions in Serbia were warm and humid as can be ...

  • 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

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi

    Anđela Despotov (2024)
    U radu je opisano ponašanje mekih stenskih masa koje su izložene porecesu raspadanja tokom određenog vremenskog perioda. Meke stenske predstavljaju kritične vrste stenskih masa pošto izazivaju različite probleme tokom izvođenja građevinskih radova. Meke stene mogu biti sedimentne stene, raspadnute metamorfne i magmatske stene. Odlikuju se niskim vrednostima čvrstoće, visokom deformabilnošću, visokom plastičnošću, podložne su dezintegraciji i fizičko-hemijskom raspadanju, odnosno ubrzanom dejstvu površinskog raspadanja usled atmosferskih uticaja.Za klasifikaciju mekih stenskih masa koriste se modifikovane verzije već postojećih klasifikacionih sistema. Jedan ...
    meke stenske mase, dezintegracija, klasifikacioni sistemi, Slake durability test
    ... vr ši ne um er en o iz me nj en e po vr ši ne ST AN JE ZI DO VA PU KO TI NA STRUKTURA DNTAKTNAILIMASIVNA- ikakna ili masivna in situ stenska vmasa sa retkam: diskontinutetana na velikom rastojanja FOO BLOKOVSKIIZDELJENA . veoma OI dobro uzglobljena neoštećena stanska | wasakoja ...
    ... gde se svaka zona smatra homogenom u odnosu na raspadnutost i sisteme diskontinuiteta. Zatim se u svakoj od ovih zona može izvesti određeni broj in situ opita. Takođe je važno izvršiti laboratorijska ispitivanja kako za deformabilnost i čvrstoću ovih vrsta stena, tako i za primenu empirijskih sistema ...
    ... čega se meri. Isti proces se ponavlja i za drugi ciklus opita. Na kraju opita uzorak se fotografiše i izvrši se opis materijala koji je ostao na situ. Prilikom opisa, potrebno je razlikovati tri kategorije prema američkom standardu ASTM D 4644 (2008): I - uzorak ostaje praktično nepromenjen ...

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... proizvod ovih sita (poz. 20), čija je krupnoća –60+20 mm, spaja se sa nadrešetnim proizvodom donjih prosevnih površina primarnih sita (poz. 8) i preko transportnih traka (poz. 13) transportuje do do bunkera (poz. 14). Podrešetni proizvod sita (poz. 20), kao definitivni proizvod drobljenja ima d ...
    ... (poz. 6), dozira na transportne trake (poz. 7). Sa transportnih traka (poz. 7) ruda gravitacijski pada na dva vibraciona sita za primarno prosejavanje (poz. 8). Primarna sita su sa po dve prosevne površine. Nadrešetni proizvod gornje prosevne površine (krupnoće –200+60 mm) transportuje se sistemom ...
    ... BEOGRADU, RUDARSKO-GEOLOŠKI FAKULTET 142 prosevne površine sita na poziciji 8, čija krupnoća iznosi –60+20 mm, se sistemom transportnih traka (poz. 13) dalje odvodi u prihvatni bunker (poz 14) na tercijarno drobljenje. Podrešetni proizvod sita (poz. 8), krupnoće –20+0 mm, pada na transportnu traku ...

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум

  • Geološke karakteristike neogenih sedimenta na prostoru šire okoline Ledinaca

    Aleksandar Tričković (2024)
    Sagledavanje evolucije neogenih sedimenata na prostoru šire okoline sela Ledinci omogućeno je primenom različitih stratigrafskih metoda na površinskim i potpovršinskim podacima. Za izradu rada korišćene su sedimentološke, biostratigrafske, geofizičke i riftno sekvencione metode, koje su primenjene na površinskim izdancima i bušotinama. Primenom principa riftne sekvencione stratigrafije na podacima dobijenim geofizičkim karotažnim merenjima dobijeni su podaci o vremenu ekstenzije u Panonskom basenu. Pored toga ovi podaci zajedno sa sedimentološkim i stratigrafskim metodama omogućili su izdvajanje depozicionih sredina tokom neogena. Generalno ...
    depozicioni sistemi, neogen, Panonski basen, ekstenzija, formacije, riftna sekvenciona stratigrafija
    ... pored Jezgara dobija se i materijal koji se iznosi isplakom na površinu. Kartiranjem Jezgra i materijala sa sita dobijaju se podaci 11 o potpovršinskoj građi. Pored kartiranja jJezgara i sita sa bušotine, podaci o geologiji dobijaju se geofizičkim metodama. One se zasnivaju na merenju fizičkih ...
    ... 2013. The evolution of a key segment in the Europe-Adria collision: The Fruška Gora of northern Serbia, Global and Planetary Change, vol. 103, str. 39-62. Zachos, J.C., Pagani MO., Sloan, L.C., Thomas, E., Billups, K., (2001). Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present. Science ...
    ... 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 Univerzitet u Beogradu Rudarsko-geološki ...

  • Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma

    Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković (2013)
    ... recurrenceVin lymph nodes in 9 patients (6.9%) and in thyroid bed (local recurrence) in 2 patients (1.5%), whereas recurrence at distant site appeared in 3 patients (2.3%)Visolated in 1 patient, associated with lymph node recurrence in another patient, and combined with local recurrence in a third patient. The ...
    ... microcarcinoma patients treated with TT/NTT and RAI. They reported a recurrence rate of 7% in thyroid bed, without distant site recurrence or disease-related mor- tality. These authors advocated that PTM should be treated in a same way as papillary thyroid carcinoma (PTC) suggesting thyroidectomy followed by ...
    ... 6.9* 1.5‡ DSR, distant site of recurrence; M1, distant metastasis at presentation; MF, tumor multifocality; N1, lymph node metastasis at presentation; ND, no data; R, recurrence rate. *Recurrence in lymph node †Overall recurrence rate. ‡Local recurrence (recurrence in thyroid bed). Clinical Nuclear ...

  • Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis

    Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović (2017)
    U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...
    Omeka, Wordnet, pretraga punog teksta, morfološka i semantička pretraga teksta, proširenje upita
    ... Group 7 C.S. Michell (2013). Investigating the use of forensic stylistic and stylometric techniques in the analysis of authorship on a publicly accessible social networking site (Facebook) (MA in Linguistics thesis). University of South Africa 8 C. Hardaker (2015). The ethics of online aggression: ...
    ... Group 13. C.S. Michell (2013). Investigating the use of forensic stylistic and stylometric techniques in the analysis of authorship on a publicly accessible social networking site (Facebook) (MA in Linguistics thesis). University of South Africa 14. C. Hardaker (2015). The ethics of online aggression: ...
    ... aspects of scholarly work in the classroom settings but often overlooked in general blogging platforms. 1 dalibor.vorkapic@rgf.bg.ac.rs 2 https://omeka.org/ For the digital library presented in this paper, Omeka is installed on operating system Ubuntu 15.10 in a virtual machine. This ...

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... management in Mongo DB, with videos served from YouTube or Amazon S3 and student data in MySQL,  edX Studio for course development in same Mongo DB that the LMS uses  Course Browsing, as a simple front page for browsing courses (edx.org site home page and course discovery site is not open ...
    ... Resource Metadata Initiative (LRMI) [5]. The focus of this paper is on LRMI metadata and their management in the context of BAEKTEL OER framework, which is described in more detail in section 2. In section 3 a review of semantic annotation implementation with examples of resource tagging is given ...
    ... tagged in a standard way in machine readable form. In that case, results returned by search engines are more relevant, and both educators and learners can find and compare learning materials that best suit their current needs more efficiently. Implementation can be accomplished in the following ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... 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 navigation tool called “Site Browser” (http://wwwn.cdc.gov/niosh-mining) that allows ...
    ... resources in Serbia Knowledge management in Serbian mining companies using ICT support for managing knowledge assets is still scarce in Serbian mining practice. However, various other applications of ICT in the field of mining have emerged in the past decade. In general, ICT is introduced in various ...
    ... gained in other circumstances that can be applied in potentially critical situations. Mining organizations need to preserve and transfer knowledge in order to be able to respond to emergencies, and knowledge management (KM) provides a useful perspective from which to tackle this issue [2]. In mining ...

  • A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)

    Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin (2016)
    ... l conceptual site models; data analysis and visualisation. London: CRC Press. MORTON, K.L., VAN MEKERK, F.A. (1993) A phased approach to mine dewatering. Mine Water and Environment, 12 (1), pp. 27-33. NIEDBALSKA, K. et al. (2011) Modelling of changes of hydrodynamic conditions in the aquatic ...
    ... (5), pp. 169-175. WELS, C., FERGUSON, P.R. and FAWCETT, M. (2012) Numerical groundwater flow modelling at the historic Rum Jungle mine site, northern Australia. In: MCCULLOUGH, C.D., LUND, M.A., and WYSE, L. (eds.) Proceedings of the International Mine Water Association Symposium. Bunbury, Australia ...
    ... observation network comprised of 116 piezometers (of which 54 in the upper aquifer, 22 in the intermediate aquifer, and 40 in the lower aquifer) were measured and analyzed. Both the initial and boundary conditions are also examined in detail in Polomčić et al. (2016). The schematization described above ...