Претрага
212 items
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Одређивање оптималне производње дубинске пумпе на клипним шипкама
Небојша Савић (2024)Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...... 3a Oy6uuHcko nyna!be ( JOURNAL OF PETROLEUM TECHNOLOGY/Legends of Artificial Lift-Part 3 URL: https://jpt.spe.org/legends-artificial-lift-part-3-history ) 4.1. Kauajbka KauaJbke cy MeXaHHuKcC HHCTAaJaHjC HOCTAaBJBCHC Ha HIOBDPIHHHMH KOJC IIpH KpeTaPby IJaTKC HHIHIKC Ha )KOJBČHOJ Op3HHH TIOJUDKy ...
... (22.04.2024.) 12. JOURNAL OF PETROLEUM TECHNOLOGY/Legends of Artificial Lift- Part 3, URL: https://jpt.spe.org/legends-artificial-lift-part-3-history (23.04.2024.) 13. SNPC, URL: http:/www.sinopeciI.com/English/Product/0560383238.html (27.04.2024.) 46 O6pasay 1 H3JABA O AVTOPCTBY 3ABPIIHHOT ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
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Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication
... of Tithonian ammonites of the Gerecse Mountains. In: Fozy, L. (Ed.), Late Jurassic — Early Cretaceous fauna, biostratigraphy, facies and deformation history of the carbonate formations in the Gerecse and Pilis Mountains (Transdanubian Range, Hungary). Institute of Geo- sciences, University of Szeget ...
... Identification of the studied material is usually difficult by the juvenile size of the specimens, the accompanied planar deforma- tion or lateral deformation, the unknown shape of the ventral side, Z. Vašiček, D. Rabrenović, P. Skupien et al. and the frequent lack of preservation of the inner whorls ...
... are given in paren- theses. The width of the whorl (B), although exceptionally measurable, would not usually be worth measuring due to the deformation of the shells. Where possible, the number of ribs at the umbilicus and by the ventral side was counted on half of the whorl. The studied and ...Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović. "Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication" in Cretaceous Research (2023). https://doi.org/10.1016/j.cretres.2023.105623
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NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands
Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić. "NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands" in Inorganica Chimica Acta, Elsevier BV (2012). https://doi.org/10.1016/j.ica.2012.09.016
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Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization
Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić . "Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization" in Mineral and Thermal Waters of Southeastern Europe, Springer International Publishing (2016). https://doi.org/10.1007/978-3-319-25379-4
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... 2019; revised 25 June 2020; Accepted Manuscript online: 1 The production of pottery in the broad sense is one of the oldest activities in human history. With the discovery, 30,000 years ago, of the special properties that clay acquires upon firing, the first synthetic material was created: ceramic ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians
Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)... extensional deformation. The second type, strike-slip deformation has created NE-SW to NW- SE oriented dextral and sinistral faults that are distributed throughout the entire studied area at outcrop scale. The fact that only few map-scale faults with low offset can be attributed to this deformation (Fig ...
... these major contacts are observed in the field by zones of intense deformation, such as meters- thick foliated fault gouges, intense faulting with large offset at outcrop scale, or tight folding. Similar zones of intense deformation with large outcrop-scale offsets have been observed also elsewhere ...
... e, in order to understand the regional effects and super- position, we have also measured deformation at farther distances from major faults of shear zones (black faults in Figs. 5, 7, 8 and 10). Deformation has a brittle character in most observed situations. The pre-Mesozoic basement contains ductile ...Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer. "Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians" in Global and Planetary Change, Elsevier BV (2020). https://doi.org/10.1016/j.gloplacha.2020.103361
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Vodosnabdevanje podzemnim vodama u Srbiji-stanje i perspektive
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Petar Papić, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2011)... ilustr., fotogr. ; 24 cm Na vrhu nasl. str.: Univerzitet u Beogradu, Departman za hidrogeologiju. - Tiraž 250. - Summary: Brief Note on Structure, History and Curriculum of �e Department of Hydrogeology of University of Belgrade - Faculty of Mining & Geology. ISBN 978-86-7352-260-9 1. Рударско-геолошки ...
... 7. Raspored predmeta po semestrima i godinama studija na Studijskom programu hidrogeologija 8. Brief Note on Structure, History and Curriculum of �e Department of Hydrogeology of University of Belgrade – Faculty of Mining & Geology 5 7 45 79 117 133 137 ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Petar Papić, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Vodosnabdevanje podzemnim vodama u Srbiji-stanje i perspektive" in Naših 40 godina, Beograd : Rudarsko-geološki fakultet (2011): 49-77
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An intelligent hybrid system for surface coal mine safety analysis
Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić. "An intelligent hybrid system for surface coal mine safety analysis" in Engineering Applications of Artificial Intelligence (2010)
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Properties of fly ash and slag from the power plants
This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method... properties that are dependent on the natural composition, quality of coal from basin, the manner of com- bustion and place of ash deposition. Article history: Manuscript received March 24, 2016 Revised manuscript accepted July 19, 2016 Available online October 20, 2016 Keywords: fly ash, slag ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Properties of fly ash and slag from the power plants" in Geologia Croatica, Zagreb : Croatian Geological Survey (2016). https://doi.org/10.4154/gc.2016.26
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Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names
In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...... Entities in Texts. Theoretical Computer Science 313(1):93– 104. Ralph Grishman and Beth Sundheim. 1996. Message Understanding Conference-6: A Brief History. In Proceedings of the 16th International Conference on Computational Linguistics (COLING 1996). vol- ume 1. Matthew Honnibal and Ines Montani. 2017 ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names" in Proceedings - Natural Language Processing in a Deep Learning World, Incoma Ltd., Shoumen, Bulgaria (2019). https://doi.org/10.26615/978-954-452-056-4_122
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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 ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Integrative GHG Assessment in Oil and Gas Industry
Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...... per million) a century ago to the current level of 420 ppm [2, 3|. The concentrations of CO» and CHu in 2019 were the highest recorded in recent history [4]. It is assumed that human influence has led to the global retrcat of glacicrs since the 1990s and thc retreat of the surface of the Arctic Sea ...Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa. "Integrative GHG Assessment in Oil and Gas Industry" in Energija, ekonomija, ekologija (2023). https://doi.org/10.46793/EEE23-1.51M
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Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)
Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...... an age close to the Sarmatian/Pannonian boundary. Also, the steep dip angle of the marls (73–75°) and a dip direction to southeast suggest the deformation is related to the proximity of the Rakovica fault which is responsible for this tilting (Figs. 9b and 21). Among the ostracodes, genera such as ...
... Paratethyan and Miocene lake deposits of Serbia. Proceedings of XIII Congress of Geologists of Yugoslavia, v. 2, p. 373–382. DOMBRÁDI, E. (2012): Deformation of the Pannonian lithosphere and related tectonic topography: a depth-to-surface analysis.‒ Utrecht studies in earth sciences, 19, 1–176. EREMIJA ...
... Carpathians and Dinarides.‒ Annal. Geophys., 2, 147–154. HORVÁTH, F., BADA, G., SZAFIÁN, P., TARI, G., ÁDÁM, A. & CLOETINGH, S. (2006): Formation and deformation of the Pannonian Basin: constraints from ob- servational data.– In: GEE, D.G. & STEPHENSON, R. (eds.): European Litho- sphere dynamics, Geological ...Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić. "Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)" in Geologia Croatica (2019). https://doi.org/10.4154/gc.2019.11
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Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе
Ana S. Mladenović (2015-06-19)Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји... to Tertiary tectonic history of the Mirdita ophiolites, northern Albania. Island Arc 14: 471 – 493 Bott M.H.P. 1959. The mechanics of oblique slip faulting. Geol. Mag. 96: 109 – 117 Brown M., Solar G. 1998. Granite ascent and emplacement during contractional deformation in convergent orogens. ...
... brittle tectonic history of the Internal Dinarides: an inference based on the paleostress study in the Valjevo area (western Serbia). Geophysical Research Abstracts, Vol. 16, EGU2014-46. EGU General Assembly 2014 Mladenović, A., Trivić, B. 2014. Cenozoic brittle tectonic history of the Kopaonik ...
... magmatism and tectonics in the Alps. Tectonics 14: 120 – 131 Vrabec M., Pavlovčič Prešeren P., Stopar B. 2006. GPS study (1996 – 2002) of active deformation along the Periadriatic fault system in northeastern Slovenia: tectonic model. Geologica Carpathica 57 (1): 57 – 65 Вуков М. 1989. Петрологија ...Ana S. Mladenović. "Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-19)
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Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе
Ana S. Mladenović (2015-06-19)Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји... to Tertiary tectonic history of the Mirdita ophiolites, northern Albania. Island Arc 14: 471 – 493 Bott M.H.P. 1959. The mechanics of oblique slip faulting. Geol. Mag. 96: 109 – 117 Brown M., Solar G. 1998. Granite ascent and emplacement during contractional deformation in convergent orogens. ...
... brittle tectonic history of the Internal Dinarides: an inference based on the paleostress study in the Valjevo area (western Serbia). Geophysical Research Abstracts, Vol. 16, EGU2014-46. EGU General Assembly 2014 Mladenović, A., Trivić, B. 2014. Cenozoic brittle tectonic history of the Kopaonik ...
... magmatism and tectonics in the Alps. Tectonics 14: 120 – 131 Vrabec M., Pavlovčič Prešeren P., Stopar B. 2006. GPS study (1996 – 2002) of active deformation along the Periadriatic fault system in northeastern Slovenia: tectonic model. Geologica Carpathica 57 (1): 57 – 65 Вуков М. 1989. Петрологија ...Ana S. Mladenović. "Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-19)
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Using Metadata For Content Indexing Within An OER Network
Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)... "and "evaluation techniques", "policy brief", "portal", "promotional material", or "reference material". The Lifecycle category describes the history and current state of a learning object. Lifecycle fields, version and status are taken from the LOM Standard. Version indicates the edition of ...Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci. "Using Metadata For Content Indexing Within An OER Network" in Proceedings of the Fifth International Conference on e-Learning, eLearning 2014, September 2014, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2014)
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... REFERENCES 1. K. E. Peters, C. C. Walters, J. M. Moldowan, The Biomarker Guide, Vol. 2: Biomarkers and Isotopes in the Petroleum Exploration and Earth History, Cambridge University Press, Cambridge, 2005, pp. 483–486, 499–500, 483–486, 493, 499, 558, 569, 612 2. B. P. Tissot, D. H. Welte, Petroleum Formation ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma
... micro- carcinoma: a study of 900 cases observed in a 60-year period. Surgery. 2008; 144:980Y987. 17. Pelizzo MR, Boschin IM, Toniato A, et al. Natural history, diagnosis, treatment and outcome of papillary thyroid microcarcinoma (PTMC): a mono-institutional 12-year experience. Nucl Med Commun. 2004;25:547Y552 ...Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković. "Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma" in Clinical Nuclear Medicine, Lippincott Williams & Wilkins (2013). https://doi.org/10.1097/RLU.0b013e3182872ed2
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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis
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 ...... objects management Omeka2, as a web publishing platform and a content management system (CMS) was selected. It is developed by the Centre for History and New Media (CHNM) at George Mason University specially for scholarly content, with an emphasis on digital collections and exhibits. While Omeka ...Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović. "Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis" in International Scientific Conference “Archibald Reiss Days” Thematic Conference Proceedings Of International Significance, Belgrade, 7-9 November 2017, Academy Of Criminalistic And Police Studies Belgrade (2017)