Претрага
1083 items
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Mechanical Properties of Microwave sintered Hzdroxzlapatite (HAP)
Mirković M., Došen A., Rosić Aaleksandra, Matović B.. "Mechanical Properties of Microwave sintered Hzdroxzlapatite (HAP)" in 3rd Conference of the Serbian Society for Ceramic Materials, 2015, The Book of Abstracts, :Društvo za keramičke materijale Srbije (2015): 88-88
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Evropska politika i javno-privatno partnerstvo u oblasti energetske efikasnosti na lokalnom nivou
Ivezić Dejan, Živković Marija, Gluščević M.. "Evropska politika i javno-privatno partnerstvo u oblasti energetske efikasnosti na lokalnom nivou" in Energija, Ekologija-Energetika 13 no. 1, Beograd:Savez energetičara (2011): 23-28
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Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia
Maja Milošević, Mihovil Logar, Biljana Đorđević. "Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia" in Nordic Clay Meeting/3rd Symposium Clays & Ceramics 2021, The Latvian Clay Science Society (2021)
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Megaklizišta u gornjem toku Drine od Foče do Višegrada i njihov uticaj na hidroenergetske objekte
Sunarić Duško, Jevremović Dragutin, Lolin M.. "Megaklizišta u gornjem toku Drine od Foče do Višegrada i njihov uticaj na hidroenergetske objekte" in Tehnički institut, Zbornik radova no. 3, Bijeljina:Arhiv za tehničke nauke Bijeljina (2010): 65-81
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Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”
Vladimir Čebašek, Veljko Rupar (2018)Eksploatacijom boksita iz ležišta "Podbraćan" formiran je površinski kop sa maksimalnom visinom zavšne kosine od 280 m. Redovnom kontrolom stabilnosti trenutnog stanja kosina površinskog kopa utvrđeno je da faktor sigurnosti iznosi Fs = 1.71 – 1.85, a što je ukazalo da postoji mogućnost povećanja nagiba kosine. U radu je prikazan postupak analize mogućnosti povećanja nagiba završne kosine površinskog kopa "Podbraćan".... razlomljeno, pri čemu je severoistočno krilo spušteno za oko 70 m. Između ova dva raseda spušteni su mlađi sedimenti i boksit, pa su tako sačuvani od erozije. Međutim, postoje i drugi rasedi preko samog ležišta (skok ovih raseda je oko 50 m), slika 4, pri čemu je došlo do izjednačavanja nivoa trijaskih ...
... kosine na profilu 22 - 22( visina kosina H = 311.20 m, ugao nagiba kosine α = 44o, faktor sigurnosti Fs = 1.31 Slika 8. Izgled kosine na profilu 24 - 24( Slika 9. Rezultati proračuna stabilnosti kosine na profilu 24 - 24( visina kosina H = 323.00 m, ugao nagiba kosine α = 42o, faktor sigurnosti Fs ...
... kosine na profilu 26 - 26( visina kosina H = 319.80 m, ugao nagiba kosine α = 41o, faktor sigurnosti Fs = 1.31 Slika 12. Izgled kosine na profilu 28 - 28( Slika 13. Rezultati proračuna stabilnosti kosine na profilu 28 - 28( visina kosina H = 323.00 m, ugao nagiba kosine α = 41o, faktor sigurnosti Fs ...Vladimir Čebašek, Veljko Rupar. "Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”" in Mining and Geology Today, II international symposium, Belgrade, 04 - 05.12.2018., Rudarski institut, Balkanska akademija nauka, Akademija inženjerskih nauka Srbije (2018). https://doi.org/10.25075/SI.2018.17
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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
Vladimir Simić, Rade Jelenković, Dragana Životić. "Mineral Resources of Serbia: Environmental, Societal and Economic Challenges" in Serbia: Current Issues and Challenges in the Areas of Natural Resources, Agriculture and Environment,, Nova Science Publishers, Inc. (2019)
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Претрага корпуса заснована на употреби екстерних лексичких ресурса путем веб-сервиса
У раду се разматра хибридни приступ претрази корпуса, илустрован на примеру алатки OCWB и NoSketch Engine, примењених на специјални корпус из области рударства (РудКор) и Корпус савременог српског језика (СрпКор). Разматрани приступ комбинује постојеће могућности алатки OCWB и NoSketch Engine, које своју претрагу заснивају на лингвистичкој анотацији корпуса, са новим могућностима претраге у виду консултовања екстерних језичких ресурса (морфолошки електронски речници српског језика и лексичка база података Српски ворднет). Хибридни приступ је реализован надоградњом вебсучеља која поменуте алатке користе ...Милош Утвић, Ранка Станковић, Александра Томашевић, Михаило Шкорић, Биљана Лазић. "Претрага корпуса заснована на употреби екстерних лексичких ресурса путем веб-сервиса" in Научни састанак слависта у Вукове дане - Vol. 48/3 Српски језик и његови ресурси, Међународни славистички центар, Филолошки факултет, Универзитет у Београду (2019). https://doi.org/10.18485/msc.2019.48.3.ch12
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...... the forming of a matrix M (6) consisting of m alternatives and n criteria: 11 12 1 1 21 22 2 2 1 2 1 2 j n j n m n i i ij in m m mj mn x x x x x x x x M x x x x x x x x = (6) where xij (for i = 1, 2... m; j = 1, 2... n) represents ...
... vector is used to form matrix M (m×n) (1) in which n is the number of considered criteria [22]. 1 1 1 2 1 11 12 1 2 1 2 2 2 21 22 2 1 2 1 2 ... ... ... ... ... ... ... ... ... ... ... ... ... ... n n n n n n n n n n nn w w w w w w a a a w w w w w w a a a M w w w w w w a a a ...
... and then multiplied by the weight coefficients of the parameters (8). 2 1 1,..., ; 1,..., ij ij m ij i x r i m j n x = = = = (7) , 1,..., ; 1,..., p w r i m j nij i ij= = = (8) where rij is the output value of the matrix (1). Follows forming an ideal (A+) and ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area
... Veselinović, M., Ðorđević, M., Kalenić, M., Krstić, B. & Karajičić, Lj., 1970. Geology of the sheet Žagubica 1:100,000 (L 34 ‒ 140). Federal Geological Survey, Belgrade (in Serbian, English and Russian summaries) Antonijević, I., Kalenić, M., Ðorđević, M., Lončarević, Č., Čičulić, M. & Škuletić ...
... tectonic movements, a descent of granitic blocks of the Plavna massif along a regional fault created the paleodepression with a length of 1400 m and width of 80 m (Kovačević & Gertik, 1995). 3. METHODS All analyzed rock samples were collected from fresh surface exposures and trenches (Fig. 3) ...
... granitic rocks. One groundwater sample was taken from a borehole (covering the Jurassic sediments and granitic bedrock with a depth of 67.5 m), one from a well (7 m) and three samples from natural springs from Jurassic sediment. Based on their chemical compositions they are all Ca-HCO3 water types (Fig ...Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić . "Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area" in Carpathian Journal of Earth and Environmental Sciences (2016)
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The Jurassic ophiolitic mélanges in Serbia: a review and new insights
... DJERIĆ & MARIJA VULETIĆ CHIARI, M., CoRTESE, G., MARcucci, M. & Nozzoi, N. 1997. Radio- larian biostratigraphy in the sedimentary cover of the ophiolites of south-western Tuscany, Central Italy. Eclogae Geologicae Helvetiae, 90: 55-77. CHIARI, M., CoBIANCHI, M. & Picorri, V. 2007. Integrated ...
... constraints to their genetic interpretation. Palaeogeography, Palaeoclimatology, Palaeoecology, 249: 233-270. CHIARI, M., SACCANI, E., PRELA, M., BORTOLOTTI, V., MARCUCCI, M. & MATSUOKA, A. 2023. Radiolarian biostratigraphy ofthe Northern Albania Ophiolites: New data from the sub-ophiolitic ...
... Djerić, 2009) Mi dd le - La te Ju ra ss ic Go nj e Fo rm at io n #* — — ——b»9-2b Callovian (Vishnevskaya & Djerić, 2009) lo we r m e m b e r #*— — ——SCG 92 Bathonian (Gawlick et al., 2017) — — —— SCG 90 Bathonian (Gawlick et al., 2017) hardground hardground hardground Legend ...Nevenka Đerić, Hans-Jürgen Gawlick, Milan Sudar. "The Jurassic ophiolitic mélanges in Serbia: a review and new insights" in Journal of the Geological Society, Geological Society of London (2024). https://doi.org/10.1144/jgs2023-165
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A new optimal eighth-order family of multiple root finders
Dejan Ćebić, Nebojša M. Ralević (2022)Dejan Ćebić, Nebojša M. Ralević. "A new optimal eighth-order family of multiple root finders" in Journal of the Korean Mathematical Society (2022). https://doi.org/10.4134/JKMS.j210607
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Katastar klizišta Beograda
Lokin Petar, Pavlović Radmila, Trivić Branislav, Lazić M., Batalović K., Đurić Uroš. "Katastar klizišta Beograda" in Zbornik radova XIV Simpozijum inženjerske geologije i geotehnike, Društvo geoloških inženjera i tehničara Srbije, Komitet za inženjersku geologiju i geotehniku, (2012): 389-403
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Распоред минских бушотина код израде хоризонталних и косих подземних просторија
Јеремија Баралић (2024)Овај рад бави се анализом и прорачуном расподеле минских бушотина приликом израде хоризонталних и косих подземних просторија у оквиру рударских операција. Главни циљ рада је да пружи јасне смернице за ефикасно и безбедно извођење бушаћко-минерских радова у различитим геолошким условима, уз посебан акценат на оптимизацију расподеле бушотина и прорачун потребне количине експлозива. У раду је детаљно обрађено неколико кључних аспеката: врсте минских бушотина (заломне, помоћне и периферне), фактори који утичу на њихов распоред, као и методе за прорачун оптималне ...... • P-oOMM KOHTypHHx OymroTHHa (m), • A - nopBprmna nornpeuHor rpeceka MuHHpaHe ripocTopuje (m?), • K — KopeKmMoHH (bakTop, 3aBHCaH OJL BpcTe creHc (oOHuHO M3Me)D)y 1,5 u 2,5). Ha npHMep, 3a KOHTypHy IHIpOCTOpHJy Ca HOBPIHHHOM rtipeceKa oJ 10 MP, OOMMOM OJL 12 M H KOpeKIMOHHM (baKTODpoOM OJL ...
... mokayyJy Ja rpaBunaH H30op pacmojiene OymroTuHa H OHTHMMMH3aHMHJa KOJMUMHHC CKCHMO3HBa 3HauajHO MOHpHHoOce moBehamy eQMKacHoOcTH M eKOHOMHMUHOCTH py)napckMx paoBa, KaO M IHOOGOJbIHaM»y 0ea0enHocru pajiHuka. TexHHuku rpopauyHu H aHaji3e KOJe Cy CIIpOBeJIeHe y pajiy MOTYy Ce KOpHCTHTH KaO OCHOBAa ...
... je CTeHcCKa Maca H3pa3HTO HecTaOuHa H TJIie HOCTOJH OHacHOCT OJI ypyntaBatba ycjeJl IrDpDcKOMECpHOT MHHHPahba. 2. Cpempe nyre OymorHHe (oJ, 1,5 M no 3 M) HIpHMeby]jy ce y BehHHuH py}apcKuHx pajtoBa 3a H3pajiy ripocTopuHja cpe}»e BenmunHHe. OBe OymroTHHe HNpyx;Kajy OHTHMaJIHy KOMOHHanujy H3MeDy ...Јеремија Баралић. Распоред минских бушотина код израде хоризонталних и косих подземних просторија, 2024
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Valorization of non-balanced coal reserves in Serbia for underground coal gasification
David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...... 29:10%m) O ) 10000mX/h If in 4 months (120 days) amount of the burned coal is: 75-50· 63 = 29250 t, then with UCG the amount of gas will bet 29 mil. mž , which is: T =2900 hours =120days, 7=120days=4months (14) 29.10%3 3 . 3 ; 3 m, =—— ——=241667 ma/days , i. e. 10070m,/h, m\, =10070 m\/h (15) ...
... amount of UCG generated gas, taking into account the assumed surface of the exploitation field (75 x 50 m, ! = 6 m, H, = 3140 kJ/mž for gas from lignite) will be: | B,= O„Hp, =29:10%2 -3140 kJ /m,, E„ =25 GWh (10) where H. a [kJmŽ] is the lower thermal value of gas, Q, [mi] — the quantity of the ...
... about 10 times lower than the natural gas. The price of natural gas is around 40 RSD/m?, which leads to: || C! =—-·10=4 RSD/mš 11 s —10 n q Revenue from the delivered amount of gas is: C. k =O,C,=29·10'm) ·4 RSD/m\, C,„ =983·10* e =983000 e (12) This price of the gas can also be corrected up to ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
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The Inner Aggregation Newton’s Method for Solving Nonlinear Equations
Nebojša M. Ralević, Dejan Ćebić, Bratislav Iričanin. "The Inner Aggregation Newton’s Method for Solving Nonlinear Equations" in Scientific Publications of the State University of Novi Pazar, Ser. A: Appl. Math. Inform. and Mech (2022)
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Faze formiranja grafičke dokumentacije rudnika sa površinskom eksploatacijom
Milutinović Aleksandar, Ganić Aleksandar, Miljanović Igor. "Faze formiranja grafičke dokumentacije rudnika sa površinskom eksploatacijom" in Zbornik radova XL Simpozijuma o operacionim istraživanjima Symopis, 09-12.09.2013. 1, Zlatibor, Srbija:University of Belgrade, Faculty of Organizational Sciences, Belgrade (2013): 751-756
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Vrednosni aspekt razlaganja proizvodnje u integrisanom privrednom društvu „Kolubare“ i „Tent“
Maksimović Svetomir, Miljanović Igor, Živojinović Miljanović Ivana. "Vrednosni aspekt razlaganja proizvodnje u integrisanom privrednom društvu „Kolubare“ i „Tent“" in Zbornik radova XL Simpozijuma o operacionim istraživanjima Symopis, 09-12.09.2013. - no. -, Zlatibor, Srbija:University of Belgrade, Faculty of Organizational Sciences, Belgrade (2013): 762-767. https://doi.org/-
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Fission-track constraints on the thermal evolution of the Serbo-Macedonian Massif (south Serbia, southwest Bulgaria and east Macedonia)
Antić, M., Kounov A., Trivic B., Peytcheva I., von Quadt A., Gerdjikov I.. "Fission-track constraints on the thermal evolution of the Serbo-Macedonian Massif (south Serbia, southwest Bulgaria and east Macedonia)" in 10th Swiss Geoscience Meeting, Bern, Switzerland, 16-17 November 2012, Abstract Volume, Bern: (2012): 65-65
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Prevent Leakage and Mixture of Karst Groundwater
Milanović Saša, Dragišić Veselin, Radulović Milan M., Stevanović Zoran. "Prevent Leakage and Mixture of Karst Groundwater" in Karst Aquifers – Characterization and Engineering (Stevanović Z. ed), Series: Professional Practice in Earth Science, :Springer International Publishing (2015): 531-600. https://doi.org/10.1007/978-3-319-12850-4_16
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Geoheritage Object-Natural Park Šargan Mokra Gora
Milovanović Dragan, Amidžić., Knežević Slobodan, Banjac Nenad, Kličković M., Maran Aleksandra (2011)Milovanović Dragan, Amidžić., Knežević Slobodan, Banjac Nenad, Kličković M., Maran Aleksandra. "Geoheritage Object-Natural Park Šargan Mokra Gora" in Proceedings, 1st international conference “Harmony of nature and Spirituality in Stone”, Kragujevac:Stone Studio Association (2011): 143-150