Претрага
411 items
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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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Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin
... identify the characteristics and operating modes of the groundwater sources. The many data were entered into a database designed for efficient processing. Different types of data were selected according to various criteria and used to develop the hydrodynamic model. The database was created in ...
... also characteristic, particularly in areas where Lower Pleistocene sand deposits are in direct contact with Upper Pleistocene sediments. Under natural conditions, the aquifer is discharged through evapotranspiration as well as groundwater flow to surface streams, but artificial discharge through ...
... of abstraction was not supported by appropriate groundwater regime monitoring, such that prolonged excessive abstractions have threatened the natural recharge capability of the aquifer, causing a regional decline in groundwater levels. The greatest drawdowns were recorded in the late 1980s ...Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović. "Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin" in Carpathian Journal of Earth and Environmental Sciences (2014)
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‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions
Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban. "‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions" in Boletín de la Sociedad Española de Cerámica y Vidrio, Elsevier BV (2020). https://doi.org/10.1016/j.bsecv.2020.06.005
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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...... Late Miocene and Early Pliocene: Global and Planetary Change, 103, 168–173, doi: 10.1016/j.gloplacha.2012.06 .007. Martinović, S., 1986, MKJ-7 well processing using PMDV programs: DIT NIS‐Naftagas, Novi Sad, 9–10, 123–131. Martins-Neto, M. A., and O. Catuneanu, 2010, Rift sequence stratigraphy: Marine ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
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Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete
Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacijaMilan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović . "Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete" in Minerals, MDPI (2021). https://doi.org/10.3390/min11090925
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In silico and in vitro biological evaluation: distribution of Ru(III) Schiff base complexes through the pancreatic 3D model and immersed blood vessel network
Milica Međedović, Dušan Ćoćić, Aleksandar Mijatović, Vladimir Simić, Žiko Milanović, Marijana Kosanić, Nevena Petrović, Snežana Sretenović, Ana Rilak Simović (2024)... Serbia). Regarding the graphical repre- sentation, the CAD Field & Solid is the University of Kragujevac and BiolRC's in-house pre- and post-processing 3D modeling and visualization tool. The main advantage of using this software is the simplification of the generation model process and the ability ...
... al CONTACT Ana Rilak Simović @ anarilakokkg.ac.rs @ University of Kragujevac, Institute for Information Technologies Kragujevac, Department of Natural Sciences, Jovana Cvijića bb, 34000 Kragujevac, Serbia. GSupplemental data for this article can be accessed online at https://doi.org/10.1080/00958972 ...Milica Međedović, Dušan Ćoćić, Aleksandar Mijatović, Vladimir Simić, Žiko Milanović, Marijana Kosanić, Nevena Petrović, Snežana Sretenović, Ana Rilak Simović. "In silico and in vitro biological evaluation: distribution of Ru(III) Schiff base complexes through the pancreatic 3D model and immersed blood vessel network" in Journal of Coordination Chemistry, Informa UK Limited (2024). https://doi.org/10.1080/00958972.2024.2303736
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Izdvajanje vode iz prirodnog gasa
Dejan Nedeljkov (2024)U radu je istaknuto važnost prirodnog gasa kao vitalna komponenta svetske energetike.Spada u najsigurnije,najčistije i najkorisnije fosilno gorivo. Sama pojava vode u vidu vlage u gasu je pokazatelj lošeg kvaliteta gasa. parametri koji mogu dovesti do lošeg kvaliteta prirodnog gasa kao pokazatelj je Wobbe index.U okviru istraživanja u master radu glavni problem funkcionisanja na KPG Paliću predstavlja vlaga u gasu,takođe se može zaključiti da kvalitet gasa zavisi od Wobbe indeksa odnosno, što je Wobbe veći, čistiji je gas, ili ...... hydrocarbures liquides et gasues par canalisatio tecanip, Paris, 1977., str. 45 ? R. N. Watkins: Sizing Separators and Accumulators Hydrocarbon Processing, November, 1967., str. 96 29 pritisak vode proporcionalno koncentraciji soli, pa se zato dobijena vrednost sadržaja vode iz dijagrama mora ...
... hydrocarbures liquides et gasues par canalisatio tecanip, Paris, 1977. godine [27] R. N. Watkins: Sizing Separators and Accumulators Hydrocarbon Processing, November, 1967. godine [28] S. Šević: Efikasnost separacije sistema tečno- tečno metodom koalescentne filtracije, Doktorska disertacija, Tehnološki ...
... ama smeše ı dizajnu separatora, jer u slučaju neusklađenosti može doći do suprotnog učinka, odnosno poremećaja rada separatora. ! D. Kataz: Natural gas Engineering, Production and Storage, str. 54 ! M. Soleša, N. Đajić: Proizvodnja i korišćenje geotermalne energije, Rudarsko — geološki fakultet ...Dejan Nedeljkov . Izdvajanje vode iz prirodnog gasa, 2024
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BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... composite o. BaTiOx /NixZni_„Fe>Oua (x = 0, 0.5, 1) via the thermal decomposition of acetylacetonate complex precursors onto BaTiOy surface and processing of obtained structures into dense ceramics. The effect of structural properties and phase composition, as well as two sintering; schedules on ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051
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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 ...Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić. "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, IOP Publishing (2019). https://doi.org/10.1088/1361-6528/ab3ca2
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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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Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability
Marija Živković, Dejan Ivezić (2021)Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, СрбијаMarija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
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Groundwater as an important resources in emergency situations of the Republic of Serbia
Boris Vakanjac, Radoje Banković, Vesna Ristić-Vakanjac, Saša Milanović, Ljiljana Vasić, Saša Bakrač, Nikola Kozić (2024)Groundwater is a renewable resource wholly or partially protected from external influences (pollutants) by nature. Currently, about 75% of the population of the Republic of Serbia meets its water needs by using underground water. Hence, this water represents an essential strategic resource of our country; according to data from the Water Management Foundation of the Republic of Serbia (VOS, 2001), water from existing sources is used in quantities of about 23 m3/s. As 67.13 m3/s is the estimated potential ...Boris Vakanjac, Radoje Banković, Vesna Ristić-Vakanjac, Saša Milanović, Ljiljana Vasić, Saša Bakrač, Nikola Kozić. "Groundwater as an important resources in emergency situations of the Republic of Serbia" in 11th International Scientific Conference on Defensive Technologies - OTEX 2024, Tara, October 2024, Military Technical Institute, Belgrade (2024). https://doi.org/10.5937/OTEH24122V
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Rock Mass Quality Rating Based on the Multi-Criteria Grey Metric Space
Miloš Gligorić, Zoran Gligorić, Saša Jovanović, Suzana Lutovac, Dragan Pamučar, Ivan Janković (2024)klasifikacija stenske mase, višekriterijumska klasifikacija, klasa, metrički prostor, intervalni sivi brojeviMiloš Gligorić, Zoran Gligorić, Saša Jovanović, Suzana Lutovac, Dragan Pamučar, Ivan Janković. "Rock Mass Quality Rating Based on the Multi-Criteria Grey Metric Space" in Computer Modeling in Engineering & Sciences, Tech Science Press (2024). https://doi.org/10.32604/cmes.2024.050898
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Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics
Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić. "Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics" in Minerals, MDPI AG (2024). https://doi.org/10.3390/min14050511
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Praktikum za vežbe iz Informatike 1
... srpski jezik. To se može učiniti izborom komande Language sa statusne linije na dnu ekrana. Na njoj je ispisan trenutno podešen jezik a u dijalogu koji se otvara može se izabrati željeni. Ovo se može uraditi i u dijalogu File/Word Options na Language kartici. Kada se izabere, npr. srpski jezik i kada ...
... čak može doći i do drugačijeg numeričkog rezultata! Opcije ovog dijaloga grupisane su na nekoliko kartica: General, Formulas, Proofing, Save, Language, Advanced itd. U narednom tekstu biće opisana neka od ovih podešavanja. Na kartici Advanced u grupi Display se definiše vidljivost nekih elemenata ...
... primena HTML-a jeste univerzalna razmena između različitih računarskim platformi. Poslednjih godina popularan je i format XML (eXtended Markup Language), koji predstavlja funkcionalno proširenje specifikacije HTML-a. Glavna karakteristika tog vida zapisa jeste dodavanje značenja struktuiranim ...Ranka Stanković, Ivan Obradović, Olivera Kitanović, Mirjana Banković. Praktikum za vežbe iz Informatike 1, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2014
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Утечњени природни гас (УПГ) – технологија производње и регасификације
Јована Милетић (2024)У овом раду истраживање је обухватило сагледавање карактеристика утечњеног природног гаса као извора енергије и његове улоге у савременој расподели потрошње енергије на глобалном и европском нивоу. Проучени су елементи тржишта утечњеног природног гаса, сектори коришћења, транс-портне руте и количине испорука. Сагледан је пут природног гаса од лежишта до корисника преко утечњавања и транспорта у резервоарима, са посебним акцентом на технологијама производње и регасификације. Објашњено је пречишћавање сировог природног гаса ради уласка у процес утечњавања, процеси утешњавања и настојања ...утечњени природни гас, технологија производње и рега- сификације, транспорт, директно коришћење УПГ-а, могућност коришћења УПГ-а у Србији... gas. Gas processing & LNG. Canada, Nova Scotia. gasprocessingnews.com/articles/2019/02gas-pretreatment-considerations-for-Ing- plants-feeding-with-pipeline-quality-gas/ pristupljeno 20.8.2024. Mokhatab, S., Mak, Y. J., Valappil, V.J., Wood, A.D.(2014). Handbook of Liquified Natural Gas. Oxford: ...
... Liquefied Natural Gas Trucks f/ork? https://afdc.energy.gov/vehicles/how-do-Ing-cars-work pristupljeno 5.9.2024. 82 54. 55. 56. 57. Uwitonze, H et al., (2020). Improving the NGL recovery process with a dividing-wall column for offshore applications. Chemical Engineering: & Processing: Process ...
... pristupljeno 27.6.2024. Arab Oil Natural Gas, AONG Website. 4mine Gas treatment. https://www.arab-oil- naturalgas.com/the-technologies-of-natural-gas-sweetening/amine-gas-treatment/ pristupljeno 20.8.2024. Argonne National Laboratory. Case Sfudy – Liquified Natural Gas. SAD, Lemont. Buades, L.S ...Јована Милетић. Утечњени природни гас (УПГ) – технологија производње и регасификације, 2024
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Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints
Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski. "Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints" in Journal of Geodynamics, Elsevier BV (2024). https://doi.org/10.1016/j.jog.2024.102058
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A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach
Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependabilityNikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović. "A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach" in Applied Sciences, Basel, August 2024, MDPI (2024). https://doi.org/https://doi.org/10.3390/app14177947
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Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
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Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining
Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović . "Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining" in Energies, MDPI (2019). https://doi.org/https://doi.org/10.3390/en12122245