Претрага
583 items
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Direct selective lead, copper and zinc minerals flotation from polymetallic ore “Podvirovi”
Lazić Predrag, Vučinić Dušica, Stanojev J., Micović B.. "Direct selective lead, copper and zinc minerals flotation from polymetallic ore “Podvirovi”" in Journal of Mining Science 46 no. 6, :Elsevier (2010): 690-694
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Osnovi hidrogeologije
Petar Dokmanović (2021)... York 8. Davis, N. S. & De Wiest, R. J. M. (1966): Hydrogeology, New York/ London/ Sydney. 9. Delleur J, (2007): Ellementary Groundwater flow and transport processes, In: The Handbook of Groundwater Engineering (sec. edition), 3.1-3.42, Editor: Delleur J , CRC Press Taylor and Francis group, Boca ...
... of Groundwater, In: The Handbook of Groundwater Engineering (sec. edition), Editor: Delleur J , CRC Press Taylor and Francis group, Boca Raton-London-New York 47. Lehr J., Scott H., Gallagher B. & Voytek J. (1988): Design and construction of water wells, Van Nostrand Reinhold, New York 48. Ljvovič ...
... poljoprivrednog zemljišta. 10 O s n o v i h i d r o g e o l o g i j e I DEO U V O D 11 O s n o v i h i d r o g e o l o g i j e 1.POJAM, PREDMET IZUČAVANJA I PRAKTIČNI ZNAČAJ HIDROGEOLOGIJE Hidrogeologija ...Petar Dokmanović. Osnovi hidrogeologije, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2021
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... 1 min max , 2,3, , max j j j k j k j j j j k x k x k x k x k k j m k x k x k (3.31) Gde j k zadovoljava navedene aksiome, a je koeficijent diskriminacije [GUO85], i 0,1 ; dok je , , 1( ) | ( ) ( ) | .j jk x k x k Interval mere ...
... podataka. Relativna greška izraţena u procentima (RPE(j,k)) i srednja relativna greška izraţena u procentima (ARPE(j,k)) su: 0 0 0 0 0 0 2 100% 1 100 ˆ ˆ % 1 j j j n j j k j x k x k RPE x k Error x k x k ARPE n x k ...
... jednaĉina MGM(1, m) prvog reda je: 1 1 11 1 2 m j j j dx k ax k b x k dk (3.19) Saglasno sa MGM(1, m), konstruisana AGO sekvenca je: 0 1 1 1 1 2 m j j j x k az k b z k (3.20) Konstruisana AGO sekvenca moţe biti ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Pleistocena small Vertebrate studies in Serbia (Balkan Peninsula, SE Europe): State of the Art and Perspectives
Jovanović Mihajlo, Đurič Dragana, Bogićević Katarina, Nenadić Draženko, Agustí J., Blain H.-A (2018)Jovanović Mihajlo, Đurič Dragana, Bogićević Katarina, Nenadić Draženko, Agustí J., Blain H.-A. "Pleistocena small Vertebrate studies in Serbia (Balkan Peninsula, SE Europe): State of the Art and Perspectives" in Abstract book of the XVI Annual Meeting of the European Association of Vertebrate Palaeontology, Caparica, Portugal June 26th-July 1st, Caparica, Portugal: (2018): 90-90
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Pleistocena small Vertebrate studies in Serbia (Balkan Peninsula, SE Europe): State of the Art and Perspectives
Jovanović Mihajlo, Đurič Dragana, Bogićević Katarina, Nenadić Draženko, Agustí J., Blain H.-A (2018)Jovanović Mihajlo, Đurič Dragana, Bogićević Katarina, Nenadić Draženko, Agustí J., Blain H.-A. "Pleistocena small Vertebrate studies in Serbia (Balkan Peninsula, SE Europe): State of the Art and Perspectives" in Abstract book of the XVI Annual Meeting of the European Association of Vertebrate Palaeontology, Caparica, Portugal June 26th-July 1st, Caparica, Portugal : (2018): 90-90
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Recalibration of the hydrodynamic model for lignite deposit Drmno in the period od 2015,
Поломчић Душан, Здравковић Ј., Војнић М., Димитријевић Бојан. "Recalibration of the hydrodynamic model for lignite deposit Drmno in the period od 2015," in Зборник радова 8. Међународне конференције УГАЉ 2017, Београд, Србија:Југословенски комитет за површинску експлоатацију (2017): 341-350
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ZnFe2O4 antiferromagnetic structure redetermination
Kremenovic Aleksandar S, Antic Bratislav V, Vulic Predrag J, Blanusa Jovan L, Tomic Aleksandra (2017)Kremenovic Aleksandar S, Antic Bratislav V, Vulic Predrag J, Blanusa Jovan L, Tomic Aleksandra. "ZnFe2O4 antiferromagnetic structure redetermination" in JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 426, Sara Burgerhartstraat 25; Amsterdam, 1055 KV; Netherlands; Subscr. to: Elsevier B:Elsevier BV ^North-Holland (2017): 264-266. https://doi.org/10.1016/j.jmmm.2016.11.071
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... ј Е − − ј Е − − ј Е − − ј Е − − ј Е − − ј Е − − ј Е − − ј Е ...
... IEF = 40 m3/€ for the class j = 10 was found for the natural gas sector, as well as the minimum value of the economic feasibility Index IEF = 1 m3/€ for the class j = 1. The remaining values for class j are: j = 2 IEF = A2min + (A2max − A2min)/9 = 1+(40 − 1)/9 = 5.333 j = 3 IEF = A2j=2 + (A2max − A2 ...
... 1)/9 = 9.667 j = 4 IEF = A2j=3 + (A2max − A2 min)/9 = 9.667 + (40 − 1)/9 = 14.000 j = 5 IEF = A2j=4 + (A2max − A2 min)/9 = 14.000 + (40 − 1)/9 = 18.333 j = 6 IEF = A2j=5 + (A2max − A2 min)/9 = 18.333 + (40 − 1)/9 = 22.667 j = 7 IEF = A2j=6 + (A2max − A2min)/9 = 22.667 + (40 − 1)/9 = 27.000 j = 8 IEF = A2j=7 ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... on stage were also used for the forecasting purpose. Vector U(i)∇ j , j = 1, 2, composed of the first Li−1 components of the vector U(i) j , j = 1, 2, 3, 4, is represented in Table 11. Table 11. Components of the vector U(i) j , j = 1, 2. Marker UV 1 UV 2 1 0.0011 −0.0570 0.0020 −0.0639 2 0.0016 ...
... . . . . . . . . . . . . 19 0.2072 −0.0705 0.2065 −0.0628 Vector π(i)j , j = 3, composed of the last component of the vector U(i) j , (i = 1, . . . , M), is represented in Table 12. Table 12. Components of the vector π(i)j , j = 3. Marker UV 1 UV 2 1 0.0029 −0.0640 2 0.0037 −0.0744 . . . . . . ...
... matrix Ỹ(i) obtained from the previous step, whereH is a Hankel operator; assume U(i)∇ j denotes the vector of the first Li−1 components of the vector U(i) j and π (i) j is the last component of the vector U(i) j (i = 1, . . . , M); select the number of r eigentriples for the reconstruction stage that ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Determination of oxygen surface groups on biochars using Boehm-titration method
Krstić D. Aleksandar, Lolić Đ. Aleksandar, Ilić Marija, Mijatović Aleksandar, Zlatanović J. Snežana, Nedić P. Zoran, Pavelkić M. Vesna (2015)Krstić D. Aleksandar, Lolić Đ. Aleksandar, Ilić Marija, Mijatović Aleksandar, Zlatanović J. Snežana, Nedić P. Zoran, Pavelkić M. Vesna. "Determination of oxygen surface groups on biochars using Boehm-titration method" in 52. savetovanje Srpskog hemijskog društva, Belgrade, Serbia (2015): 16
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Synthetical bone-like and biological hydroxyapatites: A Comparative Study of Crystal Structure and Morphology
Marković Smilja, Veselinović Ljiljana, Lukić Miodrag J., Karanović Ljiljana, Bračko Ines, Ignjatović Nenad, Uskoković Dragan (2011)Marković Smilja, Veselinović Ljiljana, Lukić Miodrag J., Karanović Ljiljana, Bračko Ines, Ignjatović Nenad, Uskoković Dragan. "Synthetical bone-like and biological hydroxyapatites: A Comparative Study of Crystal Structure and Morphology" in Biomedical Materials 6(4) no. 045005 PMID 21659698, :IOP Publishing (2011). https://doi.org/10.1088/1748-6041/6/4/045005
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An anorogenic pulse in a typical orogenic setting: The geochemical and geochronological record in the East Serbian latest Cretaceous to Palaeocene alkaline rocks.
Cvetković Vladica, Šarić Kristina, Prelević Dejan, Genser J., Neubauer, Franz., Höck Volker, von Quadt Albrecht (2013)Cvetković Vladica, Šarić Kristina, Prelević Dejan, Genser J., Neubauer, Franz., Höck Volker, von Quadt Albrecht. "An anorogenic pulse in a typical orogenic setting: The geochemical and geochronological record in the East Serbian latest Cretaceous to Palaeocene alkaline rocks." in Lithos 180-181, :Elsevier (2013): 181-199. https://doi.org/doi.org/10.1016/j.lithos.2013.
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Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia
The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...Jelka Krušić , Biljana Abolmasov, Miloš Marjanović. "Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60706-7_25
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A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System
This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFISMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić. "A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System" in Energies, MDPI AG (2023). https://doi.org/10.3390/en16072958
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A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area
Filip Anđelković, Dejan Radivojević (2018)... Anđelković, J., 1997. Badenski ciklusi u Srbiji. Geološki anali Balkanskog poluostrva, 61 (2), 1–13. Gruber, B., 1988. Mineraliensammlung E. W. Ricek. Oberösterreichischer Musealverein – Gesellschaft für Landeskunde, 80–110. 236 Marović, M., Toljić, M., Rundić, Lj., Milivojević, J., 2007. N ...
... facija: tašmajdanski krečnjaci, rakovički peskovi, višnjičke gline, konjarnički pteropodski šlir (Anđelković, M., 1987; Anđelković M. & An‐ đelković J., 1997). U dosadašnjim interpretacijama postoje izvesne razlike, bilo u geografskom raspro‐ stranjenju, bilo u samoj odredbi starosti ...
... Na slici 1 prikazana je paleogeografsko‐facijalna karta sa rasprostranjenjem facija prema Stevanoviću (1974). Anđelković M. i Anđelković J. (1997) su u svom radu badenske sedimente Srbije podelili u dva ciklusa sedimentacije, gornji i donji. Prema njihovom shvatanju, facije tašmajdanski ...Filip Anđelković, Dejan Radivojević. "A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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A contribution to the understanding of the water regime of the Visočica river
Ristić Vakanjac Vesna, Nikolić J., Čokorilo Ilić Marina, Polomčić Dušan, Bajić Dragoljub, Hajdin Bojan, Ratković Jelena (2018)Ristić Vakanjac Vesna, Nikolić J., Čokorilo Ilić Marina, Polomčić Dušan, Bajić Dragoljub, Hajdin Bojan, Ratković Jelena. "A contribution to the understanding of the water regime of the Visočica river" in Proceedings of the XVII Serbian Geological Congress, Belgrade:Serbian Geological Society (2018): 505-510
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Evaluation of Underground Zinc Mine Investment Based on Fuzzy-Interval Grey System Theory and Geometric Brownian Motion
Gligorić Zoran, Kričak Lazar, Beljić Čedomir, Lutovac Suzana, Milojević J.. "Evaluation of Underground Zinc Mine Investment Based on Fuzzy-Interval Grey System Theory and Geometric Brownian Motion" in Journal of Applied Mathematics, :Hindawi Publishing Corporation (2014)
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Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach
Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...... for the treatment of psychiatric illnesses. J. Control Release 2016, 223, 137–156. [CrossRef] [PubMed] 8. Peltonen, L.; Hirvonen, J. Pharmaceutical nanocrystals by nanomilling: Critical process parameters, particle fracturing and stabilization methods. J. Pharm. Pharmacol. 2010, 62, 1569–1579. [CrossRef] ...
... L.; Tyner, K.M. Development considerations for nanocrystal drug products. AAPS J. 2017, 19, 642–651. [CrossRef] [PubMed] 10. Gao, L.; Liu, G.; Ma, J.; Wang, X.; Zhou, L.; Li, X. Drug nanocrystals: In vivo performances. J. Control Release 2012, 160, 418–430. [CrossRef] [PubMed] 11. O’Shea, J.P.; Holm ...
... [CrossRef] 17. Wu, L.; Zhang, J.; Watanabe, W. Physical and chemical stability of drug nanoparticles. Adv. Drug Deliv. Rev. 2011, 63, 456–469. [CrossRef] 18. Li, J.; Wang, Z.; Zhang, H.; Gao, J.; Zheng, A. Progress in the development of stabilization strategies for nanocrystal preparations. Drug Deliv ...Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach" in Pharmaceutics, MDPI, Basel, Switzerland (2021). https://doi.org/10.3390/pharmaceutics13081188
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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 ...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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Some examples of interactions between certain rare earth elements and soil
... REFERENCES 1. I. Anastopoulos, A. Bhatnagar, E. C. Lima, J. Mol. Liq. 221 (2016) 954 (https://doi.org/10.1016/j.molliq.2016.06.076) 2. F. Tommasi, P. J. Thomas, G. Pagano, G. A. Perono, R. Oral, D. M. Lyons, M. Toscanesi, M. Trifuoggi, J. Arch. Environ. Contam. Toxicol. 81 (2021) 531 (https://doi ...
... editing process and publishing procedure applied by the JSCS Editorial Office. Please cite this article as Z. Nikolovski, J. Isailović, D Jeremić, S. Kovač, I. Brčeski, J. Serb. Chem. Soc. (2021) https://doi.org/10.2298/JSC211006095N This “raw” version of the manuscript is being provided to ...
... (https://doi.org/10.1007/s00244-020-00773-4) 3. V. Balaram, J. Geosci. Front. 10 (2019) 1285 4. V. M. Goldschmidt, J. Chem. Soc. (Resumed) (1937) 655 (https://doi.org/10.1039/JR9370000655) 5. M. Bernat, Cah. ORSTOM Ser. Geol 7 (1975) 65 (https://core.ac.uk/download/pdf/39881849.pdf) 6. V. Zepf ...Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski. "Some examples of interactions between certain rare earth elements and soil" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC211006095N