Претрага
628 items
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... accompanying the production process at the Amal oilfield are paraffin deposition, occurrence of layer sand, inefficient operations of Gas Lift System, inefficient oil desalination and environmental issues. Production problems, taken individually or several of them together, at some oil wells ...
... and the application of thermal method of tubing heating has been proposed. As a solution for the penetration of layer sand into the production system, it has proposed the use of gravel pack method. To achieve more efficient oil production, it has defined a model for adequate distribution ...
... well injection gas, at the level of gathering stations or compressor stations. For the purpose of oil production optimization, it has applied the system analysis of oil well operations in Gas Lift, which should result in more efficient oil production on the one hand and the increase in oil production ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike
... behavioural changes in society in regarding to maintain water resources to alleviation their quality deterioration which is based on realizing and warning for the lack of sufficient available water resources to meet the demands of water usage, in addition to the serious consequences of water scarcity ...
... re of this system. Through this work, there will be a presented architecture of the small data center, implemented at the technical faculty "Mihajlo Pupin", as well as a proposal for the system architecture to collect and analyze data submitted from the IoT device. Parts of this system are still under ...
... . The agrarian enterpreneurship is a modern system of doing business derived from the concept of sustainable development, i.e. the integral rural development in the EU, as well as from the model of multifunctional agriculture. It deals with the system of doing business which is related to agriculture ...Мирослав Црногорац, Душан Даниловић, Лола Томић. "Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike" in IX Naučno stručni skup Preduzetništvo, inženjerstvo i menadžment Zrenjanin, 24.10.2020. god., Visoka tehnička škola strukovnih studija u Zrenjaninu (2020)
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma
... thyroidectomy is recommended as a sufficient surgical treat- ment,19Y22 whereas others state that total removal of the thyroid gland is essential.18 In an early study, Hay et al15 found a higher recurrence rate in patients who underwent hemithyroidectomy and presented initially with lymph node metastases. However ...
... initially in 63 patients, combined with neck dissection in 23 of them. Patients were classified according to the UICC 7th TNM classification and staging system. However, 9 patients submitted to surgical procedures less than TT/NTT were not staged. There were 88 patients (72.7%) with unifocal tumor (T1a) and ...
... trial can be performed, an appropriate design of such a trial should define the criteria for the surgical approach to be used as well as a staging/risk system for patient classification and to include a precise histological classifica- tion because various histopathological findings may have diverse impact ...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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Глаголи у кухињи и за столом
Цветана Крстев, Биљана Лазић (2015)У раду је приказано истраживање лексике на српском језику кулинарског домена које се заснива на коришћењу доменског корпуса, електронских лексичких ресурса, пре свега WordNet-а и морфолошких речника, и локалних граматика. Приказане су доменске специфичности ових ресурса, како се користе, и међусобно употпуњују. Посебно је приказано како се коришћењем доменског корпуса могу екстраховати глаголи специфични за кулинарски домен и описати начини њиховог коришћења. Дат је попис глагола са основним подацима који је добијен применом представљених метода.аутоматска обрада, коначни трансдуктори, електронски речници, семантичке мреже, локалне граматике, кулинарство... систем заснован на онтологији хране за планирање менија за ресторане, болнице, школе и слично (Снеј и др. 2008), Global Track & Trace Information System користи своју Track&Trace онтологију хране да би омогућио успешно праћење порекла хране, како производа као целине тако и њених састојака (Пицути ...
... fakulteta u Novom Sadu, Год. 3, бр. 3 (2013), стр. 111-123.ISSN 2217-8546. 7. КОРДИЈЕ И ДР. 2014: Cordier, Amélie, et al. "Taaable: a Case-Based System for personalized Cooking." Successful Case-based Reasoning Applications-2. Springer Berlin Heidelberg, 121-162. 8. КРСТЕВ 2008: Cvetana Krstev ...Цветана Крстев, Биљана Лазић. "Глаголи у кухињи и за столом" in Научни састанак слависта у Вукове дане - Српски језик и његови ресурси: теорија, опис и преимене, Вол. 44/3, Београд : Међународни славистички центар (2015)
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Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication
... (in Serbian with French summary). Szives, O., F6zy, l., 2013. Systematic description of Early Cretaceous Ammonoidea of the carbonate formations of the Gerecse Mountains. In: Fozy, L. (Ed.), Late Jurassic—Early Cretaceous Fauna, Biostratigraphy, Facies and Deformation His- tory in the Gerecse and ...
... zones/|terranes (Fig. 1B) (Anđelković and Nikolić, 1974, 1980; Karamata and Krstić, 1996). The first system is part of the Dacia Mega-unit, representing the Europe-derived units, and the last system is part of the Circum- Rhodope Unit, representing the Moesian-derived units (e.g., Schmid et al. ...
... litho- and biostratigraphy of the studied section. Based on the ammonite species identified and described herein, the Dedina section is dated as early Berriasian in age (Jacobi? and Grandis ammonite Subzones), and the Jurassic-Cretaceous. boundary cannot be constrained. The aim of the current ...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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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... in the chosen reference coordinate system, which may be arbitrarily oriented compared to the deformation, but along the principal axes n: V = 2 ∑ i λi ni ⊗ ni , (31) where the dyadic product ni ⊗ ni changes the basis, by rotating the reference coordinate system to the directions of the principal ...
... above the velocity discontinuity. In front of the stable region, along the E–W oriented velocity discontinuity, two zones of shortening evolve. This early structural pattern consists of a top-to-N basal thrust (2) and one top-to-S backthrust (3). D o w n lo a d e d fro m h ttp s ://a c a d e m ...
... moving plate (after 15 min), strain localizes into narrow zones of deformation, as Fig. 13 shows. Along the N–S oriented velocity discontinuity, this early deformation is accommodated by en-echelon NNE–SSW oriented Riedel R-shears (4). Principal stretches λ in Fig. 13 show NNW–SSE deformation features ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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Optimising in electrical energy consumption in mining plants
Snežana Aleksandrović, Vesna Damnjanović, Ilija Jeftenić. "Optimising in electrical energy consumption in mining plants" in 17th International Symposium INFOTEH-JAHORINA 2018, Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2018)
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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)Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević. "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" in Marine and Petroleum Geology, Elsevier BV (2020). https://doi.org/10.1016/j.marpetgeo.2020.104252
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Испитивање магнетске сусцептибилности прашине антропогеног порекла
... magnetism: Principles and applications, Rev. Geophys., 50. [8] Dearing, J. (1999). Environmental magnetic susceptibility, Using the Bartington MS2 System. Kenilworth, England: Chi Publishing, 54. [9] Basavaiah, N. (2011). Geomagnetism: Solid Earth and Upper Atmosphere Perspectives. Singapur: Springer ...Дубравка Новичић, Весна Цветков, Весна Дамњановић. "Испитивање магнетске сусцептибилности прашине антропогеног порекла" in VII Меморијални научни скуп из заштите животне средине доцент др Милена Далмација Нови Сад, 01-02. април 2019, Природно-математички факултет, Департман за хемију, биохемију и заштиту животне средине (2019)
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Hydrogeochemistry of Uranium in the Groundwaters of Serbia
Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić. "Hydrogeochemistry of Uranium in the Groundwaters of Serbia" in Uranium - Past and Future Challenges, Springer International Publishing Switzerland (2015). https://doi.org/10.1007/978-3-319-11059-2_89
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... the mixture can be decomposed into a ‘pore pressure’ and an effective stress, and the mechanical behavior of the mixture can be described by a system of differential equations governing the dynamics of each of the phases as well as the coupling among them (Pastor et al, 2008). SPH (Smoothed Particle ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... igraphic units (Figure 1a) and reconstruction of depositional environ‐ ments, which also helps better understand the elements of the hydrocarbon system. Commercial quan‐ tities of hydrocarbons have been established in turbidite sandstones in the Banatsko Aranđelovo de‐ pression, west of the S ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit
... seismograph, maximum values for three oscillation velocity components can be recorded in directions X , } and Z from the rectangular coordination system, as follows: • YV, —rock mass oscillation velocity horizontal transversal component, • V, — rock mass oscillation velocity vertical component, ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac. "Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit" in 9th International Conference Mining and Environmental protection MEP, 24 – 27 May 2023, Sokobanja, Serbia, Belgrade : University of Belgrade-Faculty of mining and geology (2023)
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Microstructural and magnetic properties of electrospun hematite/cuprospinel composites
Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic MaterialsMira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić. "Microstructural and magnetic properties of electrospun hematite/cuprospinel composites" in Journal of Materials Science: Materials in Electronics, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s10854-020-03526-0
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Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study
Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...... Ludwigshafen, Germany) and trehalose dihydrate (Carl Roth GmbH, Germany). Fresh ultrapure water used for reconstitution was supplied from a TKA GenPure system (TKA Wasseranfbereitungssysteme GmbH, Germany). 2.2. Nanocrystal dispersion preparation The nanocrystal dispersion of DK-I-56-1 was prepared ...
... analysis was performed using a Nicolet iS10 (Thermo Scientific, Wal- tham, MA, USA) FT-IR spectrometer equipped with a single reflection ATR system (Smart iTR, Thermo Scientific, USA) with diamond plate and ZnSe lens. Spectra were recorded in the range of 4000 cm ! to 660 cm ! with a resolution ...
... Pharmacol. Toxicol. 131 (6), 514–524. https://doi.org/10.1111/bcpt.13801. Gol, D., Thakkar, S., Misra, M., 2018. Nanocrystal-based drug delivery system of risperidone: lyophilization and characterization. Drug Dev. Ind. Pharm. 44 (9), 1458–1466. https://doi.org/10.1080/03639045.2018.1460377. Holzer ...Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study" in European Journal of Pharmaceutical Sciences, Elsevier BV (2023). https://doi.org/10.1016/j.ejps.2023.106557
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389
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Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content
Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugsNina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović. "Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content" in Journal of Sol-Gel Science and Technology, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s10971-019-04925-4
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Увођење доменских и семантичких маркера за област рударства у српске електронске речнике
... Zybatow, Gerhildetal. (eds.), Peter Lang: Frankfurt am Main, pp. 3–17. Крстев и др., 2013: Cvetana Krstev, Ivan Obradović, Miloš Utvić, DuškoVitas, “A system for namedentity recognition based on local grammars”, In: J Logic Computation 24 (2), pp. 473–489. Крстев/Лазић, 2015: Цветана Крстев, Биљана Лазић ...Иван Обрадовић, Александра Томашевић, Ранка Станковић, Биљана Лазић. "Увођење доменских и семантичких маркера за област рударства у српске електронске речнике" in Научни састанак слависта у Вукове дане - Српски језик и његови ресурси: теорија, опис и примене, Београд : Међународни славистички центар на Филолошком факултету, Филолошки факултет (2017). https://doi.org/10.18485/msc.2017.46.3.ch10
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Утицај соларне активности на здравље човека
... Novom Sadu. [10] Zaporozhan, V., Ponomarenko, A. (2010). Mechanisms of Geomagnetic Field Influence on Gene Expression Using Influenza as a Model System: Basics of Physical Epidemiology. International J. Environmental Research and Public Health, 7, 938-965. [11] Gordon, C., Berk, M. (2003). The ...Каролина Ђукић, Весна Цветков, Весна Дамњановић. "Утицај соларне активности на здравље човека" in VII Меморијални научни скуп из заштите животне средине доцент др Милена Далмација Нови Сад, 01-02. април 2019, Природно-математички факултет, Департман за хемију, биохемију и заштиту животне средине (2019)