Претрага
319 items
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Chemical composition of the thermomineral waters of Josanicka Banja spa as an origin indicator, balneological valorization and geothermal potential
Milenić Dejan, Milanković Đuro, Vranješ Ana, Savić Nevena, Doroslovac Nenad. "Chemical composition of the thermomineral waters of Josanicka Banja spa as an origin indicator, balneological valorization and geothermal potential" in Hemijska Industrija, Beograd:Savez hemičara i tehnologa Srbije (2015): 74-74. https://doi.org/10.2298/HEMIND14063007410.2298
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The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia)
Gajica Gordana, Šajnović Aleksandra, Stojanović Ksenija, Antonijević Milan, Aleksić Nikoleta, Jovančićević Branimir (2017)Gajica Gordana, Šajnović Aleksandra, Stojanović Ksenija, Antonijević Milan, Aleksić Nikoleta, Jovančićević Branimir. "The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia)" in Journal of the Serbian Chemical Society 82 no. 12, Beograd:Serbian Chemical Society (2017): 1461-1477. https://doi.org/https://doi.org/10.2298/JSC170
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Fuzzy Model for Risk Assessment of Machinery Failures
The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...... depending on the classification. 3.3. Fuzzy Composition upon a Level of Risk Assessment The synthesis of risk indicators is performed based on appropriate fuzzy composition. According to Kundu [30], min–max composition is more precise than max–min composition in the sense that there is a concentration ...
... structures (using min–max composition). The outcome is defined as the expected (mean value) grade in the min–max composition. In other words, an RPN number is used, where all partial risk indicators equally impact the risk assessment. In the case of a level three min–max composition, the outcome can be ...
... Subsystem Using Min–Max Composition A risk level assessment for the elements in a subsystem was done based on a symmetric min–max composition of the analyzed risk indicators: failure severity, frequency of occurrence, and the ability to detect a failure. The min–max composition of the fuzzy sets was ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy Model for Risk Assessment of Machinery Failures" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12040525
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Composition related properties of (Yb,Y)2O3 nanoparticles synthesized by controlled thermal degradation of AA complexes
Antić Bratislav, Kremenović Aleksandar, Vučinić-Vasić Milica, Dohčević-Mitrović Zorana, Nikolić Aleksandar S., Gruden-Pavlović Maja, Jancar Bostjan, Meden Anton (2010)Antić Bratislav, Kremenović Aleksandar, Vučinić-Vasić Milica, Dohčević-Mitrović Zorana, Nikolić Aleksandar S., Gruden-Pavlović Maja, Jancar Bostjan, Meden Anton. "Composition related properties of (Yb,Y)2O3 nanoparticles synthesized by controlled thermal degradation of AA complexes" in Materials Chemistry and Physics no. 122, PO BOX 564, 1001 LAUSANNE, SWITZERLAND:Elsevier Science Sa (2010): 386-391. https://doi.org/10.1016/j.matchemphys.2010.03.
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Examination of mineral composition and color origin in natural pigments from France and Finland that are stored in the collection of rocks and minerals, University of Belgrade
Alena Zdravković, Maja Milošević (2022)Alena Zdravković, Maja Milošević. "Examination of mineral composition and color origin in natural pigments from France and Finland that are stored in the collection of rocks and minerals, University of Belgrade" in The Tenth Serbian Ceramic Society Conference »Advanced Ceramics and Application X«, Serbian Ceramic Society (2022)
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Neogene to Quaternary basalts of the Jabal Eghei (Nuqay) area (south Libya): Two distinct volcanic events or continuous volcanism with gradual shift in magma composition?
Radivojević Maša, Toljić Marinko, Turki Salah, Bojić Zoran, Šarić Kristina, Cvetković Vladica (2015)Radivojević Maša, Toljić Marinko, Turki Salah, Bojić Zoran, Šarić Kristina, Cvetković Vladica. "Neogene to Quaternary basalts of the Jabal Eghei (Nuqay) area (south Libya): Two distinct volcanic events or continuous volcanism with gradual shift in magma composition?" in Journal of Volcanology and Geothermal Research 293, Amsterdam:Elsevier (2015): 57-74. https://doi.org/10.1016/j.jvolgeores.2015.02.0
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Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?
Стефан Петровић, Наталија Батоћанин (2020)У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...... included: - Determination of mineral composition and fabric in selected samples by the optical investigations under the Leica DMLSP petrographic microscope, which is connected with the digital camera Leica DC 300 over the program LAS V4.1; - The chemical compositions of mineral phases were identified ...
... All rocks are more or less serpentinized in the Maljen massif and almost completely transformed into serpentinites in the Mts. Suvobor. Mineral composition and the source of samples from Brdjani and Rudnik were determined, along with their comparison. The required conditions and factors for intensive ...
... of average composition: En71.4Wo26.3Fs2.3 (Fig. 4). The XRPD analyses confirmed the domination of talc (ICCD PDF card no. 82- 8124) and the presence of significantly less abundant crystal phase from serpentine group of minerals (probably chrysotile, PDF 52-1563). Cubic opaque mineral was also observed ...Стефан Петровић, Наталија Батоћанин. "Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?" in Записници српског геолошког друштва, Српско геолошко друштво, Београд (2020)
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Studying of Liquid Thermolysis Products of Various Types of Immature Kerogen in Sedimentary Lacustrine Rocks from the Valjevo-Mionica Basin, Serbia, and the Effect of Pt4+ and Ru3+ Ions on Their Yield and the Hydrocarbon Composition
Šajnović Aleksandra, Stojanović Ksenija, Simić Vladimir, Pevneva Galina S., Golovko Anatoly K., Jovančićević Branimir (2011)Šajnović Aleksandra, Stojanović Ksenija, Simić Vladimir, Pevneva Galina S., Golovko Anatoly K., Jovančićević Branimir. "Studying of Liquid Thermolysis Products of Various Types of Immature Kerogen in Sedimentary Lacustrine Rocks from the Valjevo-Mionica Basin, Serbia, and the Effect of Pt4+ and Ru3+ Ions on Their Yield and the Hydrocarbon Composition" in Geochemistry International 10 no. 49, Moscow, Russian Federation:Springer, M A I K Nauka - Interperiodica (2011): 1022-1034. https://doi.org/10.1134/S0016702911100053
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Texture and composition of ferrian ilmenite from hornblende andesites of the Timok Magmatic Complex, Serbia
Aleksandar Luković, Predrag Vulić, Janez Zavašnik, Vladica Cvetković, Kristina Šarić, Miodrag Banješević, Marina Lazarov, Aleksandar Pačevski (2021)hematit, ilmenit, hemoilmenit, ilmenohematit, čvrsti rastvor, tekstura, eksolucija, andezit, bakar porfiri, timocit, Krivelj, NikoličevoAleksandar Luković, Predrag Vulić, Janez Zavašnik, Vladica Cvetković, Kristina Šarić, Miodrag Banješević, Marina Lazarov, Aleksandar Pačevski. "Texture and composition of ferrian ilmenite from hornblende andesites of the Timok Magmatic Complex, Serbia" in Neues Jahrbuch für Mineralogie - Abhandlungen (Journal of Mineralogy and Geochemistry), Schweizerbart Science Publishers, Stuttgart, Germany (2021)
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Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)
Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD... the Šumadija–Kopaonik ore district, Serbia (Figure 1a,b), with different post-magmatic processes of deposition, mineral associations, crystallisation temperature, and chemical composition. Arsenopyrite is often present in the ores of this district and is also commonly present in the mine tailings ...
... scanning, electron microscope (SEM, JSM-6610LV, JEOL Inc., Tokyo, Japan) operating, at 20 kV to determine their homogeneity and mineral association; their composition was analysed by energy-dispersive X-ray spectrometry (EDS, X-Max, Oxford Instruments PLC, Abingdon, UK), using internal standards ...
... different types of mineralisations in the Šumadija– Kopaonik ore area, no correlation was established regarding, its composition and different deposition conditions, i.e., different mineral paragenesis. - The average unit cell parameters measured by XRPD of near-stoichiometric arsenopy- rite from the ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
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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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Proučavanje distribucije šlihovskih minerala u aluvionu Nere(Bela Crkva)
Oto Babović (1991)Oto Babović. Proučavanje distribucije šlihovskih minerala u aluvionu Nere(Bela Crkva), Beograd:Rudarsko-geološki fakultet, 1991
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Doprinos oblasti koncentracije metaličnih minerala kroz izučavanje strukturnih osobina rude
Radica Milosavljević (1965)Radica Milosavljević. Doprinos oblasti koncentracije metaličnih minerala kroz izučavanje strukturnih osobina rude, Beograd:Rudarsko Geološki Fakultet, 1965
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The principles of geological economical evaluation of mineral deposits applied to the evaluation of the Akashat phosphate deposit (Iraq)
Falah Jaber (1971)Falah Jaber. The principles of geological economical evaluation of mineral deposits applied to the evaluation of the Akashat phosphate deposit (Iraq), Beograd:Rudarsko Geološki Fakultet, 1971
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Minerali sistema Cn3(As, Sb, V,Sn,Ge,W)S4 u ležištima bakra istočne Srbije
Ljubomir Cvetković (1989)Ljubomir Cvetković. Minerali sistema Cn3(As, Sb, V,Sn,Ge,W)S4 u ležištima bakra istočne Srbije, Beograd:Rudarsko Geološki Fakultet, 1989
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Kristalografska proučavanja bornih minerala iz ležišta Piskanja (Jarandolski basen)
Aleksandra A. Rosić (2005)Aleksandra A. Rosić. Kristalografska proučavanja bornih minerala iz ležišta Piskanja (Jarandolski basen), Beograd:Rudarsko Geološki Fakultet, 2005
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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... of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiOy /NiFe»Ou composite, sintered at 1150 ?"C, resulted in a wide frequency range stability. Addi- tionally, particular phase composition indicates ...
... Table 2. Microstructure (grain size) and phase composition, as well as their interplay guuide the magnetization process and influence magnetic properties in general [69]. With an increase in sintering temperature up to 1300 "C, different phase composition was obtained (Table 1) and the microstructure ...
... of 5?/min. The phase composition of the synthesized materials, as well as, phase abundances are calculated by the RIR method incorporated in PDXL2 integrated X-ray powder diffraction software (Version 2.8.30; Rigaku Corporation, Tokyo, Japan). The morphology and composition of the prepared composites ...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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Kristalografsko proučavanje strukturne desimetrizacije granata grosularsko-andraditske izomorfne serije
Pavle I. Tančić (2016-09-21)U ovoj Doktorskoj disertaciji proučavano je pet različitih zona makroskopski zonarnog grandita sa lokaliteta Meka Presedla (Kopaonik, Srbija). Pomoću hemijske i elektronske analize mikroprobe preračunati su relativno visoko homogeni sastavi zona, t.j.: Grs64±1Adr36±1Sps2 (A), Grs62±1Adr38±1Sps2 (B), Grs59±2Adr40±2Sps2 (C), Grs58±2Adr41±2Sps2 (D) i Grs58±1Adr41±1Sps2 (E). Glavne promene u sastavima izražene formulom: Ca2,93-2,97Mn0,05-0,06Mg0,00-0,01Al1,14-1,26Fe3+0,72-0,83Ti0,00-0,02Si2,97-3,02O12 ukazuju da je jedina značajnija varijacija ustanovljena samo kod Al-Fe3+ raspodela u oktaedarskom položaju. Ovakav hemijski sastav je potvrđen i sa matematičkim proračunima iz IC i Raman analiza. Urađena ...Macroscopically zoned grandite, chemical analysis, electron microprobe analysis, Raman, Rietveld, structure, dissymmetrization, space groupPavle I. Tančić. "Kristalografsko proučavanje strukturne desimetrizacije granata grosularsko-andraditske izomorfne serije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-21)
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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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Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia
This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...... concentrations of REE were stable and probably buffered by mineral disso- lution and reaction in the country rock. During the second stage and andradite-rich phase growth, which has been initiated by boiling process, the fluid composition was extremely controlled by the oxidation state, W/R ratio ...
... skarn, Rudnik. Introduction Study of the composition of common skarn minerals and the possibility to be helpful in prospecting of skarn deposits has a brief history. One of the earliest attempts was made by Nakano et al. (1991) who studied the composition of pyro- xenes. Afterwards, several attempts ...
... 2004: Garnet composition as an indicator of Cu mine- ralization: Evidence from skarn deposit of NW Iran. Journal of Geochemical Exploration 81, 47–57. https://doi.org/10.1016/ S0375-6742(03)00212-7 Srećković-Batoćanin D., Vasković N., Milutinović S., Ilić V. & Nikić Z. 2014: Composition of zonal garnets ...Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol. "Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/10.31577/GeolCarp.72.1.2