Претрага
565 items
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Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event
Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco. "Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event" in Historical Biology (2023). https://doi.org/10.1080/08912963.2023.2190757
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Development of Open Educational Resources (OER) for Natural Language Processing
In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...... because large amount of resources is produced each day, almost each moment. The vast majority of information is still expressed in natural language, so language processing has an important role in production of information.[5] Computational Linguistics started to attract attention of researchers ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines
The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković. "Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines" in 8th International Conference MIining And Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Available technological procedures for capturing CO2 in the industrial and power generation sectors
Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...... permeability of the membrane [21,29]. A very important characteristic is that separation of CO2 depends on the number of membranes in the system [29], so for achieving the high degree of separation it is necessary to apply multistage separation [25]. Membrane-based separation has several advantages over ...Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac. "Available technological procedures for capturing CO2 in the industrial and power generation sectors" in 8th International Conference Mining and Environmental Protection, 22 – 25th September 2021, Serbia, Univerzitet u Beogradu, Rudarsko-geološki fakultet (2021)
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Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households
The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...... typical flat of 60 m2 that is heated to 20°C for 16 hours a day, 180 days a year. The required specific heat for heating of 150 kWh/m2 has been adopted, so according to this methodology, it is necessary to provide 9000 kWh of heat for the heating season. Most of the residential stoves that are in use ...Boban Pavlović, Dejan Ivezić, Marija Živković. "Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households" in 5th International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo, 2020, University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo (2020)
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...... slightly above 2019, but also above the highest consumption recorded in 2014. In addition to consumption, coal prices increased extremely in 2021, so prices in Europe (S121/tons) and Asia (8145/ton) reached their peak since 2008 [16]. Demand for coal is primarily dictated by the needs of industry ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu
U radu su prikazani rezultati geotehničkih istraživanja za potrebe izgradnje visećeg pešačkog mosta preko klisure reke Đetinje u Užicu. Predviđeno je da most, sistema prednapregnute trake, omogući prelaz pešacima sa desne dolinske strane na stranu Starog grada, koja je opasana strmom liticom (cca. 40 m visine). Za potrebe formiranja geotehničkog modela i strukturnog sklopa krečnjačke stenske mase korišćen je postupak fotogrametrijskog snimanja dronom. Predviđeno je da se zatežuća sila (od oko 30 MN), koju most prenosi na obalni stub, ...fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, paker (Ližonov) test... i silikonskih prstenova (0135-139mm). Na gradilište su donešena dva sidra sledećih karakteristika: 12x15,7mm - Y1860 S7; Fpe=279kN, Fpo,n=246kN, So=150mm?; L,=26,50m (od čega je 1,50m za hvatanje presom); Ls=15m (dužina sidrišne deonice); Crevo za injektiranje 13x2mm sa otvorima na svakih 1,0m ...Zoran Berisavljević, Miloš Marjanović, Uroš Đurić. "Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu" in Zbornik radova / Međunarodno naučno-stručno savetovanje Geotehnički aspekti građevinarstva i zemljotresno inženjerstvo, Vrnjačka banja, 1-3. novembar 2023., Beograd : Savez građevinskih inženjera Srbije (2023.)
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Correlation Between Dynamic CBR and Compaction and Bearing Capacity of Pavement Foundation Layers
This paper presents a dynamic California Bearing Ratio (CBRd) device that can be used on a prepared pavement foundation layer to obtain a certain parameter of the tested material in the laboratory and in situ in a direct and fast way. For the selected natural material (gravel), it is shown that the laboratory CBRd can be used to estimate the compaction and bearing capacity, because it correlates well with the parameters of the standard and modifed Proctor compaction tests. ...korelacija parametara, donji slojevi saobraćajnica, laboratorijska i terenska ispitivanja, dinamički kalifornijski indeks nosivosti CBRd... Conclusion The primary objective of this study was to establish reliable correlations between the selected param- eters of the gravel material so as to describe the compaction and bearing capacity of the substrate, and de- 32 velop a method of using and defining the values of a CBR, device ...Milan Bogdanović, Snežana Bogdanović, Dragoslav Rakić, Irena Basarić Ikodinović. "Correlation Between Dynamic CBR and Compaction and Bearing Capacity of Pavement Foundation Layers" in Soil Mechanics and Foundation Engineering, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s11204-024-09939-x
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Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji
Dragoslav Rakić (2013-05-10)U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja... (k) Si So = 0.5Si Sk = 0 Ni No = Ni Nk = No I papir-karton, meka i tvrda plastika Ai Ao = Ai + 0.5Si Ak = Ao + So Si So = 0.5Si Sk = 0 Ni No = Ni + 0.5Si Nk = No + So II metali, staklo, drvo, koža, tekstil Ai Ao = Ai Ak = Ao Si So = 0.8Si Sk = 0 Ni No = Ni Nk = No + 0.5(Ao+So) III organske ...
... Si=0.8x45.7= 36.56 So = 0.8Si= 29.25 Sk = 0 Ni=0.2x45.7= 9.14 No = Ni= 9.14 Nk = No + 0.5(Ao+So) = 27.42 III OR1 45.7 Ai = 0 Ao = Ai + 0.2Si= 7.31 Ak = 0.5(Ao+So) = 18.28 Si=0.5x4.2+0.5x9.6= 6.9 So = 0 Sk = 0 Ni=0.5x4.2+0.5x9.6= 6.9 No = Ni + Si = 13.8 Nk = No + 0.5(Ao+So) = 13.8 IV U11+F12 ...
... organske materije Ai Ao = Ai + 0.2Si Ak = 0.5(Ao+So) Si So = 0 Sk = 0 Ni No = Ni + Si Nk = No + 0.5(Ao+So) IV nerazvrstan - ostali otpad Ai Ao = Ai Ak = 0.5(Ao+So) S – stišljivi; N – nestišljivi; A – armirajući; (p) – početno; (o) – odložen; (k) - konačno 4 - Geotehnička klasifikacija komunalnog ...Dragoslav Rakić. "Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-05-10)
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Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji
Dragoslav Rakić (2013-05-10)U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja... (k) Si So = 0.5Si Sk = 0 Ni No = Ni Nk = No I papir-karton, meka i tvrda plastika Ai Ao = Ai + 0.5Si Ak = Ao + So Si So = 0.5Si Sk = 0 Ni No = Ni + 0.5Si Nk = No + So II metali, staklo, drvo, koža, tekstil Ai Ao = Ai Ak = Ao Si So = 0.8Si Sk = 0 Ni No = Ni Nk = No + 0.5(Ao+So) III organske ...
... Si=0.8x45.7= 36.56 So = 0.8Si= 29.25 Sk = 0 Ni=0.2x45.7= 9.14 No = Ni= 9.14 Nk = No + 0.5(Ao+So) = 27.42 III OR1 45.7 Ai = 0 Ao = Ai + 0.2Si= 7.31 Ak = 0.5(Ao+So) = 18.28 Si=0.5x4.2+0.5x9.6= 6.9 So = 0 Sk = 0 Ni=0.5x4.2+0.5x9.6= 6.9 No = Ni + Si = 13.8 Nk = No + 0.5(Ao+So) = 13.8 IV U11+F12 ...
... organske materije Ai Ao = Ai + 0.2Si Ak = 0.5(Ao+So) Si So = 0 Sk = 0 Ni No = Ni + Si Nk = No + 0.5(Ao+So) IV nerazvrstan - ostali otpad Ai Ao = Ai Ak = 0.5(Ao+So) S – stišljivi; N – nestišljivi; A – armirajući; (p) – početno; (o) – odložen; (k) - konačno 4 - Geotehnička klasifikacija komunalnog ...Dragoslav Rakić. "Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-05-10)
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Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2
Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...... corresponds to an isoform of the enzyme with higher mass present in the preparation. The peak at lower m/z ratio around 11 709 has not been assigned so far, but it might correspond to a fragment of PLA2, possibly obtained during the process of enzyme preparation. However, additional peaks in the mass ...
... which is important for water homeostasis and overall metabolism. The association of pancreatic PLA2 with cancer progression has not been demonstrated so far and the effect of transition metal complexes on the activity of this enzyme has not been studied. In this work, this enzyme serves only as a model ...Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković. "Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2" in Metallomics, Oxford University Press (OUP) (2011). https://doi.org/10.1039/c1mt00088h
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Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
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A survey of greenhouse gases production in central European lignites
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)... Prairie, 2014). Post-mining waters are also threatened by acidification caused by the oxidation of sulphides (Gläßer et al., 2011). At low pH, the water solu- bility of CO2 decreases substantially, thus, water chemistry has a huge impact on the buffering of lignite-originating CO2 emissions. Lake eco- systems ...
... concentration of which is a factor that significantly determines the rate of the process (Khalil et al., 2004). The experimental treatments were oxygen-free so nitrification could not occur. On the other hand, availability of NO3 - , which could be a source for anaerobic N2O formation via denitrification, was ...Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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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... 71. Majid, E.;; Rauf, J.; Ata, S.; Bibi, L.; Malik, A.; Ibrahim, S.M.; Ali, A.; Iqbal, M. Synthesis and characterization of NiFe>»Ou ferrite: Sol-gel and hydrothermal synthesis routes effect on magnetic, structural and dielectric characteristics. Mater. Chem. Phys. 2021, 258, 123888. [CrossRet] ...
... -Y.; Shen, X.-Q.; Zhou, J.-X.; Jing, M.-X.; Cao, K. Preparation of spinel ferrite NiFe2»Oxu fibres by organic gel-thermal decomposition process. J. Sol-Gel Sci. Techmol. 2007, 42, 95–100. [CrossRet] toh, H.; Takeda, T.; Naka, S. Preparation of nickel and Ni-Zn ferrite films by thermal decomposition ...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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Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance
Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography... western Neo-Tethys Ocean Island Arc eastern < ophiolitic mćlange Neo-Tethys Ocean carbonate-clastic mćlange (Bajocian - Oxfordian) — — metamorphic sole đ?m (Bathonian - Oxfordian) (Žlate Early Jurassic - Oxfordian) Middle - Late Jurassic future DOB ii plagiogranites' O formation of SSZ + + ...Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović. "Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance" in Geologica Carpathica (2017)
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The Karavansalija Mineralized Center at the Rogozna Mountains in SW Serbia: Magma Evolution and Time Relationship of Intrusive Events and Skarn Au ± Cu–Pb–Zn Mineralization
rudna ležišta, egzo-endoskarn, CA-U/Pb TIMS datiranje, Balkansko poluostrvo, magmatizam, kraktorajni magmatizamJ. Hoerler, Albrecht von Quadt, R. Burkhard, Irena Peytcheva, Vladica Cvetković, T. Baker . "The Karavansalija Mineralized Center at the Rogozna Mountains in SW Serbia: Magma Evolution and Time Relationship of Intrusive Events and Skarn Au ± Cu–Pb–Zn Mineralization" in Frontiers in Earth Sciences, Frontiers (2022). https://doi.org/10.3389/feart.2021.798701
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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... management process and the establishment of the time needed for completion of the necessary activities. Operative plan of risk assessment should be defined so as to minimize the maximum time needed for its completion and thus avoid postponing problem resolution, which would increase the probability of a risk ...
... exposure to toxic substances. Dust particles affect the functioning of the cardio-pulmonary system and can cause mortality due to long-term exposure [35], so analyses are carried out in relation to the concentration of pollutants. Studies of the impact of ambient air pollution on human health and mortality ...
... exposure to toxic substances. Dust particles affect the functioning of the cardio-pulmonary system and can cause mortality due to long-term exposure [35], so analyses are carried out in relation to the concentration of pollutants. Studies of the impact of ambient air pollution on human health and mortality ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)
Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt. "Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s00531-015-1266-z
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Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)
Невенка Новаковић (2024)Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрадаНевенка Новаковић. Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава), Београд : [Н. Новаковић], 2024
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Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog
Maja D. Milošević (2016-12-09)Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva... metodama ustanovljeno je da je uzorak iz ležišta Bogovina pretežno montmorionitskog sastava (preko 75 %) i u skladu sa tim nosi skraćenicu mon.B. Uzorci iz ležišta Slatina - C i V su smektitsko-ilitskog sastava i nose oznake smec-ill.SC i smec-ill.SV. Uzorak iz ležišta Košarno je kaolinitska glina sa većim ...
... sadržajem kvarca (25-30 %) i manjom količinom feldspata (5 %). Gline iz ovog ležišta upotrebljavaju se u hemijskoj industriji, farmaciji, industriji vatrostalnih materijala, keramici i kao punila u industriji boja. Iz ležišta «Miličinica» uzeta su tri uzorka koji se međusobno razlikuju po boji: M1 ...
... glina - V - (industrijska oznaka - PKG 2v) koristi u vatrostalnoj industriji. Iz ležišta «Slatina» uzeta su dva uzorka, SV i SC (http://www.kopoviub.co.rs/baza.html) (slika 14). 24 Slika 14. Glina iz ležišta – Slatina, oznaka SC Lokalitet «Košarno» (slika 12, C), nalazi se na petnaest ...Maja D. Milošević. "Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-12-09)