Претрага
113 items
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Ecological status of the Lim river alluvium in Serbia
Amel Kurbegović, Boris Vakanjac, Vesna Ristić Vakanjac, Mirjana Bartula, Zorana Naunović, Nikola Milovanović, Jovan Kovačević (2022)Three countries share the catchment of the Lim River and they have been engaged in an eco-logical struggle for years, to conserve the river, its tributaries, and biodiversity. Honoring international conventions and declarations, along with active involvement of the civil society and support of Eu-ropean Union agencies, major efforts are being made to draw attention to the degradation of nature, especially water, which is essential for life on the planet Earth. Considering that natural resources are limited and that ...Amel Kurbegović, Boris Vakanjac, Vesna Ristić Vakanjac, Mirjana Bartula, Zorana Naunović, Nikola Milovanović, Jovan Kovačević. "Ecological status of the Lim river alluvium in Serbia" in Fresenius Environmental Bulletin, Parlar Scientific Publications (2022)
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... contain the lime as the binder (Fig. 9). The correlation coefficient with the lime content and the control sample is calculated and is 0,966, and with the cement content and the control sample is 0,954. After the calculated coefficient values it is found that the samples with the lime and the cement ...
... contain the lime as the binder (Fig. 11). The correlation coefficient with the lime content and the control sample is calculated and is 0,917, and with the cement content and the control sample is 0,686. After the calculated coefficient values it is obtained that the samples with the lime belong to ...
... contain the lime as the binder (Fig. 12). The correlation coefficient with the lime content and the control sample is calculated and is 0,876, and with the cement content and the control sample is 0,771. After the calculated coefficient values it is obtained that the samples with the lime and the cement ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia
Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology... 2. Limestones oftthe Grivska Formation in the valley of Lim River near the mouth of Bistrica River (A, outcrops ofthe Triassic lime- stones on the left side of Lim River valley; B, outcrops of the Triassic limestones on the right side of Lim River valley; note intensive folding; C, thin-bedded limestones ...
... mated as more than 100 meters. Contacts of lime- stones and matrix of mćlange were not observed. First sampling point is on the right side of valley directly near the bridge (coordinates N 43*%28'03,8" Geol. an. Balk. poluos., 2019, 80 (1), 17–27 of Lim River valley, by grey to yellowish-grey ...
... radiolarians, and did not yield any macrofossils. Micropa- laeontological research of Upper Triassic siliceous rocks was performed at the locality Lim River, in the vicinity of Bistrica Village in SW Serbia. Radiolarian assemblages are characterized by such species as Capnodoce anapetes DE WEVER ...Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić. "Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia" in Geološki anali Balkanskoga poluostrva (2019). https://doi.org/10.2298/GABP1901017B
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Karakteristike klizišta i odrona na dolinskim stranama Lima u njegovom toku kroz Srbiju
Sunarić Duško, Jevremović Dragutin (2010)Sunarić Duško, Jevremović Dragutin. "Karakteristike klizišta i odrona na dolinskim stranama Lima u njegovom toku kroz Srbiju" in XV Kongres geologa Srbije, Beograd:Зборник радова 15. конгреса геолога Србије са међународним учешћем, Београд, [26-29 мај] 2010. = Proceedings of the 15th Congress of Geologists of Serbia with International Participation, Belgrade [26 (2010): 489-495
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Prirodna ranjivost karstnih izdani srednjetrijaskih krečnjaka u oblasti između reka Bistrice, Uvca i Lima
Branislav Petrović, Veljko Marinović, Zoran Stevanović. "Prirodna ranjivost karstnih izdani srednjetrijaskih krečnjaka u oblasti između reka Bistrice, Uvca i Lima" in 18. Kongres geologa Srbije, Srpsko geološko društvo (2022)
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Fizičko-hemijsko raspadanje krečnjaka ugrađenih u objekte Beogradske tvrđave i mogućnost konsolidacije
Maja Z. Franković (2022)Beogradska tvrđava, spomenik kulture od izuzetnog značaja za Republiku Srbiju, izgrađena je od krečnjaka badenske starosti. Njihova litološka heterogenost, u sadejstvu sa uticajima okruženja, rezultira visokim intenzitetima raspadanja. Korelacijom intrinzičnih sa ekstrinzičnim faktorima, definisani su fizičko-hemijski procesi raspadanja ugrađenih mikrofacija krečnjaka. Aplikacijom neorganskih konsolidanata na karbonatnoj bazi (nano-kreča i Ca-acetoacetata) i alkoksisilana, te korelacijom fizičko-mehaničkih svojstava pre i nakon tretmana, ispitana je efektivnost u pogledu zaustavljanja dekohezije krečnjaka. Određivanjem petroloških, tehničkih svojstava i mapiranjem formi raspadanja Mračne kapije kao ...krečnjaci, forme i intenziteti degradacije, fizičko-hemijsko raspadanje, konsolidacija, nano-kreč, Ca-acetoacetat, alkoksisilani, Mračna kapijaMaja Z. Franković. Fizičko-hemijsko raspadanje krečnjaka ugrađenih u objekte Beogradske tvrđave i mogućnost konsolidacije, Beograd : M. Franković, 2022
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Zlatonosni aluvion Konjske reke i mogućnost njegove valorizacije
Kasim Hrković (1978)Kasim Hrković. Zlatonosni aluvion Konjske reke i mogućnost njegove valorizacije, Beograd:Rudarsko-geološki fakultet, 1978
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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Jeleč grad- još nepriznati objekat geonasleđa
Остаци средњовековног града Јелеча на једном од врхова планине Рогозне (1262 m), по неким веровањима представљаju купу угашеног вулкана. Рогозна je позната по појавама скарновске Cu–Au минерализације, а трагови рударске активности и важних путева још од античких времена и даље постоје у непосредној околини. О томе сведочи и османски назив за Рогозну: Gümüş Dağ (Сребрна планина). Време изградње Јелеча је непознато. Постоје индиције да је постојао још у 6. веку, али се помиње први пут средином 12. века. Поуздан податак ...Marija Radisavljević, Danica Srećković Batoćanin, Vladan Vidosavljević, Irena Kajtez. "Jeleč grad- još nepriznati objekat geonasleđa" in Zbornik apstrakata, 212. 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022, Srpsko geološko društvo (2022)
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Analiza uzorka oštećenja čeličnih podgradnih okvira u kosim i horizontalnim prostorijama na primeru jame Ravna reka""
Dragomir Tabori (1988)Dragomir Tabori. Analiza uzorka oštećenja čeličnih podgradnih okvira u kosim i horizontalnim prostorijama na primeru jame Ravna reka"", Beograd:Rudarsko-geološki fakultet, 1988
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Studija određivanja dimenzija sigurnosnih stubova i stabilnosti raspona u otvorenim otkopima revira Kozja reka" rudnika "Sase""
Ante Gluščević (1972)Ante Gluščević. Studija određivanja dimenzija sigurnosnih stubova i stabilnosti raspona u otvorenim otkopima revira Kozja reka" rudnika "Sase"", Beograd:Rudarsko-geološki fakultet, 1972
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Karakteristike sedimenata upletenih reka formacije klastiti Kladnice
Radmilo Jovanović (1993)Radmilo Jovanović. Karakteristike sedimenata upletenih reka formacije klastiti Kladnice, Beograd:Rudarsko-geološki fakultet, 1993
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Geologija i tektonika ugljonosne oblasti između Dobre na Dunavu i Porečke reke
Petar Bogdanović (1963)Petar Bogdanović. Geologija i tektonika ugljonosne oblasti između Dobre na Dunavu i Porečke reke, Beograd:Rudarsko Geološki Fakultet, 1963
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Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications
Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (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 ...примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалимаDarko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic. "Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications" in Science of Sintering, Bor, August 2024, National Library of Serbia (2024). https://doi.org/10.2298/SOS240701029B
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Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)
... outcrops have been studied. For example, a completely new, long section (> 150 meters) of the Lower Sarmatian sand, silty clay, sandstone and marly lime- stone is observed for the ºrst time. In addition, the coarse-grained clastics from the basal part of Miocene which indicates well-known the Middle ...
... outcrops have been studied. For example, a completely new, long section (> 150 meters) of the Lower Sarmatian sand, silty clay, sandstone and marly lime- stone is observed for the first time. In addition, the coarse-grained clastics from the basal part of Miocene which indicates well-known the Middle ...Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević. "Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)" in 7th International Workshop: Neogene of Central and South-Eastern Europe, Velika, Croatia, maj 2017, Croatian Geological Society (2017)
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Побољшање ефикасности одлучивања у рударству применом линеарних оптимизационих модела
Трајче Бошевски (2021)Одлучивање и управљање у рударству је захтеван и сложен задатак изложен ризицима. Конвенционални-искуствени приступи доношења одлука, у пракси често показују слабост која се огледа у недовољној поузданости и прецизности. Предмет истраживања докторске дисертације, под називом „Побољшање ефикасности одлучивања у рударству применом линеарних оптимизационих модела“ је да, сагледавањем научних метода линеарног програмирања, приступи формирању локацијских модела који би били засновани на анализи и прилагођавању постојећих и увођењу нових претпоставки за случајеве као што је експлоатација и потрошња кречњака. У дисертацији ...Трајче Бошевски. Побољшање ефикасности одлучивања у рударству применом линеарних оптимизационих модела, [Т. Бошевски], 2021
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Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља
Бојан Земљак (2024)Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...... [Haque, Hughes, Lim, Vernon, 2014.] [74]. IIpaMapHH ČKOHOMCKH HHTCPpeC Ha OBOJ HOKAaNMJH yCMepeH Je Ka OKCHJIAMAa, KaO H JIaJBHM JIoKHIHTTHMa HHOOHJyMa H TaHTaHyMa yHyTap JICOKHIHHOT HIpOCTOpa HIIaHHHC Bexnu, KojH cenpocTupe Ha Kpyry 0J1 CKopo 3 KunmoMerTpa [Haque, Hughes, Lim, Vernon, 2014.| ...
... Arfemis Resources Ltd) [Haque, Hughes, Lim, Vernon, 2014.] [74]. . IInanuHa ITee (enr:t. Mount Gee), JyoxxHa aycrpanuja, eKcrimoaranuja je BpnteHa oJ CrpaHe KoMmaHHje MaparoH pecoypcec (eHrm. Marathon Resources Ltd) [Matthews, 2014. ; Haque, Hughes, Lim, Vernon, 2014. ; Barakos, Dyer, Hitch ...
... N., Hughes, A., Lim, S. and Vernon, C., 2014). Rare earth elements: Overview of mining, mineralogy, uses, sustainability and environmental impact. Resources, 3(4), p.614-635. Ta6ena 0poj 2. Osa ma6ena je npeyaema u3 useopa (Racma6ak npemxooOne ma0ene): (Haque, N., Hughes, A., Lim, S. and Vernon ...Бојан Земљак. Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља, 2024
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Izučavanje problema otvaranja dubokih rudnih tela na primeru rudnog tela Borska reka""
Čedomir Beljić (1994)Čedomir Beljić. Izučavanje problema otvaranja dubokih rudnih tela na primeru rudnog tela Borska reka"", Beograd:Rudarsko-geološki fakultet, 1994
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Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)
Santonian, Campanian, radiolarians, planktonic foraminifera, biostratigraphy, limestones, Struganik, SerbiaLiubov Bragina, Nikita Bragin, Luidmila Kopaevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)" in Stratigraphy and Geological Correlation, Pleiades Publishing Ltd (2020). https://doi.org/10.1134/S0869593820010037