Претрага
56 items
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Cretaceous ultrapotassic magmatism from the Sava-Vardar Zone of the Balkans
Kristijan Sokol, Dejan Prelević, Rolf Romer, Milica Božović, Paul van den Bogaard, Elitsa Stefanova, Bojan Kostić, Nenad Čokulov (2020)Late Cretaceous global plate reorganization associated with the inception of counterclockwise rotation of Africa relative to Europe initiated in the Balkan region small-volume magmatism of diverse geochemical signature along the enigmatic Sava-Vardar Zone. We study a Late Cretaceous lamprophyric sill in Ripanj village near Belgrade to constrain this magmatic episode. The lamprophyre is characterized by high contents of Na, P, Fe and Al, and low contents of K, Ca and Mg. Its original nature (Na, K, Ca and Mg) is ...Kristijan Sokol, Dejan Prelević, Rolf Romer, Milica Božović, Paul van den Bogaard, Elitsa Stefanova, Bojan Kostić, Nenad Čokulov. "Cretaceous ultrapotassic magmatism from the Sava-Vardar Zone of the Balkans" in Lithos (2020)
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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. "Strain Partitioning Around an Indenter During Oroclinal Bending: Inferences From Field Kinematic Study And Analogue Modeling with Application to the European Carpatho-Balkanides Orogen" in AGU Fall Meeting 2021, New Orleans, USA, 13.-17.12.2021., AGU (2021)
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Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Strain partitioning along a curved strike-slip fault system during indentation: inferences from analogue modelling" in GeoMod 2021, Doorn, the Netherlands, 19.-23.9.2021., Utrecht University (2021)
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Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations
The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija... Serbo- Macedonian\Supragetic extensional detachment. Clockwise rotation induced by dextral drag affected the foliation in the Serbo-Macedonian Massif that was originally oblique to the detachment and strike-slip corridor. This dragging and rotation reoriented the foliation and stretching lineation in ...
... the dextral drag within the fault zone and in its close vicinity, obliquely oriented foliation together with stretching lineation was rotated clockwise for ~30° (Fig. 6b). However, such drag did not affect the pre-existing structures at higher distances from the Serbo-Macedonian/Supragetic contact ...
... while zircon and apatite are accessory. Quartz and feldspars demonstrate undu- lose extinction, bulging recrystallization and subordinate sub- grain rotation recrystallization locally (Fig. 5a, b). Garnets were probably formed in a single pre-Alpine metamorphic phase as they do not show overgrowth rims ...Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković . "Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/https://doi.org/10.31577/GeolCarp.72.5.3
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Strain partitioning around an indenter during oroclinal bending: kinematics of the Circum-Moesian fault system of the Carpatho-Balkanides
Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2021)... West and East Carpathians have driven the formationof the backarc-convex oroclinal bending in the south and west. The orocline formed duringclockwise rotation of the Dacia mega-unit and coeval docking against the Moesian indenter. Thisoroclinal bending was associated with a Paleocene-Eocene orogen-parallel ...Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga. "Strain partitioning around an indenter during oroclinal bending: kinematics of the Circum-Moesian fault system of the Carpatho-Balkanides" in EGU General Assembly 2021, Vienna, Austria, 19.-30.4.2021., EGU (2021)
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Paleomagnetic study of Jurassic-Early Cretaceus sediments in the Danibicum of Eastern Serbia
... direction for the Danubicum is well defined and similar to those for the Vardar zone suggesting that these two areas could have participated in a CW rotation of around 40° together, in post Early Miocene times. In order to support this conclusion, we plan to extend the research to the area situated ...Vesna Cvetkov, Emo Marton, Vesna Lesić, Dragana Tomić. "Paleomagnetic study of Jurassic-Early Cretaceus sediments in the Danibicum of Eastern Serbia" in I Kongres geologa u Bosni i Hercegovini sa međunarodnim učešćem, Udruženje geologa u Bosni i Hercegovini (2015)
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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit
Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformationsUros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić. "Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit" in Geologica Carpathica, Jun 2024, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2024.12
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... the Balkan belt represent a direct prolongation of the Variscan metamorphic rocks from the Getic zone and the SMM that have experienced clockwise rotation and dextral strike-slip tectonics during the Alpine orogeny (e.g. Csontos and Voros 2004; Figenschuh and Schmid 2005). The evidence of ...
... are measured along the other limb of F, folds. Occasionally observed steep inclination of the composite foliation (S,) is probably caused by rotation during a later brittle deformation rather than representing a feature intrin- sic to the D, style of deformation in the area. Axes b, of ce ...
... between stretching lineation and maximum of b, fold axes suggests that both structures are related to the same deformation stage (D»). Later rotation of blocks in the brittle regime has caused further dispersion in the orien- tation of b, fold axes. Crenulation cleavage Sy intersects foliation ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Application of machine learning for diagnosing the operation of a deep well pump in oil production
Maja Trikić (2024)This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost... coefficients of the contour. To make the descriptors invariant to rotation, the magnitude |a(R)|is used. However, in the case of dynamomerric charts, rotation invariance is not critical because some types of charts can change after rotation. This is the case with charts showing leakage from a moving valve ...
... measurement method, sensors can be classified into several main types: 1.Turbine sensors - These use rotating turbines driven by the fluid flow. The rotation speed of the turbine is proportional to the flow rate of the liquid or gas. Turbine sensors are often used in applications where precise measurement ...Maja Trikić. Application of machine learning for diagnosing the operation of a deep well pump in oil production, 2024
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Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex
Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males. "Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2024). https://doi.org/10.2298/GABP240116003S
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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Terminology Acquisition and Description Using Lexical Resources and Local Grammars
Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...... research” and a term for technical characteristics of machines “Length of the caterpillar transporting device measured from the vertical excavator rotation axis to the front edge of the caterpillar”. 4.2 Extraction of MWUs from domain texts The extraction of MWUs from a text is preceded by the retrieval ...Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić. "Terminology Acquisition and Description Using Lexical Resources and Local Grammars" in Proceedings of the 11th Conference on Terminology and Artificial Intelligence, Granada, Spain, 2015, Granada : LexiCon (Universidad de Granada) (2015)
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470
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Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia
Оливера Крунић (2021)Оливера Крунић. "Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia" in Рационално коришћење земљишта и вода у Србији - Sustainable Use of Land and Water in Serbia- Serbian Academy of Sciences and Arts; Scientific Conferences Volume CXCVII; Department of Chemical and Biological Sciences, Book 19, Српска академија наука и уметности (2021)
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Poređenje rezultata interferometrijske analize za zemljotrese na istočnom anatolijskom rasedu od 2020. i 2023. godine
Dragan Živković (2024)Ovaj rad se bavi analizom površinskih deformacija izazvanih zemljotresima u Turskoj iz 2020. i 2023. godine korišćenjem diferencijalne satelitske radarske interferometrije (DInSAR tehnike). Cilj istraživanja bio je da se kvantifikuju i uporede deformacije terena izazvane ovim seizmičkim događajima i da se razumeju mehanizmi koji stoje iza oslobađanja seizmičke energije u regionu. Analizom DInSAR snimaka, identifikovane su različite deformacije duž rasednih zona za svaki zemljotres. Dok je zemljotres iz 2020. godine (M 6,7) izazvao lokalizovane deformacije duž Istočno anatolijskog raseda, zemljotres ...Dragan Živković. Poređenje rezultata interferometrijske analize za zemljotrese na istočnom anatolijskom rasedu od 2020. i 2023. godine, 2024
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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 ...... electncity BALANCED BALANCED API Size:C-310-200-118 (Unit ID CUSTOM) o GR ED0J) “OMR TNIJ Os Weleieab(enı Poak dev 398 2000 : arbox j: .. Crank rotation with veell to nqht: CCW Cvoho ioad factor: 1669 155 Max_cb moment (N-m}. 580919 66010.1 Max. cb moment (N-m) Unknown Counterbalance effect(N) 51179 ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
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Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... Unit:MRZ K-5 Torque analysis and electricity BBALANCED API Size:C-119-112.59 (Unit ID CUSTOM) (Min.Energy) (Min Torq) OOO G — !MA ? 4 inQ: Crank rotation with well to right: CCW koad : 1,444 1,337 Max. cb moment (N-m): 744155 | 8533,54 Max. cb moment (N-m): Unknown Counterbalance effect(N}: 16935 ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
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Tektonska evolucija istočne periferije timočke eruptivne oblasti
Stefan Zujić (2024)U radu su predstavljeni rezultati proučavanja tektonskih i litostratigrafskih karakteristika istočnog oboda Timočke eruptivne zone. Zaključci o geološkim odnosima u okviru Timočke eruptivne oblasti i susednih geotektonskih jedinica izvedeni su na osnovu podataka prikuljenih tokom terenskih istraživanja i podataka dobijenih iz publikovanih radova. Rezultati rada ukazuju da je teren koji je bio tema ovog istraživanja, u strukturno-tektonskom smislu oblikovan tokom glavnih geodinamičkih događaja u okviru Karpato-balkanskog orogenog luka. Analizom strukturnog sklopa su utvrđeni glavni deformacioni događaji koji su predsavljeni ...Stefan Zujić. Tektonska evolucija istočne periferije timočke eruptivne oblasti, 2024