Претрага
680 items
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... 400,000 t 375,000 t Coal mass per package 100,000 t 65,000 t Reserve 8 days 7.5 days Time per package 6 shifts 4 shifts Max. number of filled packages 2.5 4.5 Min. number of filled packages 1.5 1.5 Max. coal mass at coal yard 250,000 t 270,000 t Min coal mass at coal yard 150.000 t 90,000 ...
... 000 t Difference (Delta) 100,000 t 180,000 t Thus, statistically speaking, a larger quantity of coal can be stored in the same area if there are fewer piles, because less space is left between piles. The homogenization stacking system always starts so that at least one pile is completely filled ...
... for the maximum hourly pit capacity of 5000 t and the permitted speed range of the stacker (4-20 m/min) coal can be stacked in 16 to 90 layers. For a more realistic hourly capacity, the minimum and maximum number of layers changes. For a pit rate of 3000 t/h, coal can be stacked in 25 to 150 layers ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015-05-29)Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.... Formulacija je data kao pod uslovom da T Max Z = > Xom —pj)xftt+ > Di x; t=2 iEV ieV levy xf +t=2,..T, i€V xisxy, i€V,G/)eEA, t=1,.. i t=1,..T 108 (4.13) (4.14) (4.15) (4.16) (4.17) (4.18) (4.19) (4.20) 109 ∈ 0,1 , ∈ , = 1, … (4.21) gde T ponovo označava broj vremenskih perioda ...
... e (4.18). Takođe, imamo da ∑ = , t = 1,…,T, tako da ograničenje (4.19) prelazi u da ∑ ≤ ∑ . Ovo podrazumeva da ≤∑ , t =1,....,T, (i,j) ∈ A. Dakle, formulacija (4.13) može biti reformulisana kao: max ∈ (4.23) pod uslovom da xi € {0,1}, ie€V, t=1,..T (4.21) gde T ponovo ozna¢ava broj vremenskih perioda ...
... X x; (4.1) t=1 m=1 i=1 gde je: T - maksimalan broj perioda eksploatacije, t = 1, 2, 3, ...T, N - totalan broj blokova koji se uzima u analizu, n = 1, 2, 3, ...N, M - tip materijala zavisno od prerade, m = 1,2,3...M i - index pojedinacnog bloka, c{™- NPV za masu bloka i tokom perioda t ako pripada procesnom ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015-05-29)Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.... Formulacija je data kao pod uslovom da T Max Z = > Xom —pj)xftt+ > Di x; t=2 iEV ieV levy xf +t=2,..T, i€V xisxy, i€V,G/)eEA, t=1,.. i t=1,..T 108 (4.13) (4.14) (4.15) (4.16) (4.17) (4.18) (4.19) (4.20) 109 ∈ 0,1 , ∈ , = 1, … (4.21) gde T ponovo označava broj vremenskih perioda ...
... e (4.18). Takođe, imamo da ∑ = , t = 1,…,T, tako da ograničenje (4.19) prelazi u da ∑ ≤ ∑ . Ovo podrazumeva da ≤∑ , t =1,....,T, (i,j) ∈ A. Dakle, formulacija (4.13) može biti reformulisana kao: max ∈ (4.23) pod uslovom da xi € {0,1}, ie€V, t=1,..T (4.21) gde T ponovo ozna¢ava broj vremenskih perioda ...
... X x; (4.1) t=1 m=1 i=1 gde je: T - maksimalan broj perioda eksploatacije, t = 1, 2, 3, ...T, N - totalan broj blokova koji se uzima u analizu, n = 1, 2, 3, ...N, M - tip materijala zavisno od prerade, m = 1,2,3...M i - index pojedinacnog bloka, c{™- NPV za masu bloka i tokom perioda t ako pripada procesnom ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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Long-term planning methodology for improving wood biomass utilization
The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
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Contribution to the geotechnical classification of municipal waste landfills in Serbia
Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028
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Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima
Jelena R. Malenović - Nikolić (2016-07-12)Efikasnost funkcionisanja sistema upravljanja zaštitom životne sredine u rudarskoenergetskimkompleksima zavisi od stepena sprovođenja usvojene politike zaštiteživotne sredine i primene preventivnih mera zaštite životne sredine. Nedostatakfinansijskih sredstava za unapređivanje tehnologije eksploatacije, transporta, pripreme iprerade energetskih mineralnih sirovina u našim rudarsko-energetskim kompleksima,negativno utiče na ostvarivanje ciljeva zaštite životne sredine, a posledice radnihaktivnosti rudarsko-energetskih kompleksa dovode do smanjenja nivoa kvalitetavazduha, vode i zemljišta...rudarsko-energetski kompleks, životna sredina, sistem upravljanja,višekriterijumsko odlučivanje, modeliranje... T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F ...
... S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M ...
... F S S M T W T F S S M T W T F S S 10 Jan '16 17 Jan '16 24 Jan '16 31 Jan '16 7 Feb '16 14 Feb '16 21 Feb '16 28 Feb '16 6 Mar '16 13 Mar '16 20 Mar '16 27 Mar '16 3 Apr '16 10 Apr '16 17 Apr '16 24 Apr '16 1 May '16 8 May '16 15 May '16 22 May '16 29 May '16 5 Jun '16 12 Jun '16 19 Jun '16 26 Jun '16 ...Jelena R. Malenović - Nikolić. "Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-07-12)
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Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations
The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija... M o ra v a T i m o k Z o n e T i m o k Z o n e S redna G ora S redna G ora Zone Zone S o u t h C a r p a t h i a n s S o u t h C a r p a t h i a n s ZagajicaDepression ZagajicaDepression P an nonian Basin P an nonian Basin S e r b ia n C a r p a t h i a n s S ...
... S e r b ia n C a r p a t h i a n s B a l k a n i d e s B a l k a n i d e s M o e s i a n M o e s i a n P m l a t r f o P m l a t r f o T F T F TFTF C F C F M o r a v a V a l l e y C o r r i d o r M o r a v a V a l l e y C o r r i d o r Jastrebac Mts.Jastrebac ...
... metamorphics. The green arrow marks the tectonic contact with normal sense of shear between the two units. SUPRAGETIC UNIT N E O P R O T E R O Z O IC T O P A L E O Z O IC L O W E R NORTHERN SERBO-MACEDONIAN SUBUNIT G γ Sm Sm Mi M M A Q Q Q Gs Q Q Gs Gs- chlorite-sericite ...Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković . "Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/https://doi.org/10.31577/GeolCarp.72.5.3
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo... ◦C/min, with a retention time of 1 h. Activated carbons obtained by this procedure were designated as AC@G–T–N2–t–XOH and AC@F–T–N2–t–XOH, where G and F are precursors, N2 is activation gas, T and t are temperature and time of activation while XOH represent activation agents (X = Li, Na, K). During activations ...
... carbonaceous materials, i.e., whether activation takes place in the same way on both sugars. For that reason, XRPD analyses of samples AC@G–T–N2–t–XOH and AC@F–T–N2–t–XOH were performed and the results are shown in Figure 2. – – – – – – – – – – – – – – – – hydroxides, and broad peaks between 2θ value ...
... visible. That is characteristic for – – – – – – – – − – −1 – – −1 – – Figure 2. The XRPD patterns of activated carbons: (a) AC@G–T–N2–t–XOH and (b) AC@F–T–N2–t–XOH. The results presented in Figure 2a are for samples obtained from glucose, which showed that there are no significant differences ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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A Description of Morphological Features of Serbian: a Revision using Feature System Declaration
In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...... the combination table describing the ‘paukal’ for nouns could have the following form: Type Gen Nb Case Anim any any [sp] any any any any t g any any any t a Any (b) Multiflex, as a part of the Unitex (Paumier 2008), that we use for the inflection of Serbian compounds and the production of ...
... française 87. Paris: Larousse. Erjavec, T. (2004) MULTEXT-East Version 3: Multilingual Morphosyntactic Specifications, Lexicons and Corpora. In: Proc. of the Fourth Intl. Conf. on Language Resources and Evaluation, LREC'04, pp. 1535 - 1538, ELRA, Paris. Erjavec, T. MULTEXT-east morphosyntactic spe ...
... XXII, Amsterdam-Philadelphie : Benjamins, pp. 341-367. Lee, K., Burnard, L., Romary, L., de la Clergerie, E., Declerck, T., Bauman, S., Bunt, H., Clement, L., Erjavec, T., Roussanalay, A., Roux, C. (2004) “Towards and international standard on feature structures representation”,in Proc. of LREC’04 ...Cvetana Krstev, Ranka Stanković, Vitas Duško. "A Description of Morphological Features of Serbian: a Revision using Feature System Declaration" in Proceedings of the 5th International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta : European Language Resources Association (2010)
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Dimenzionisanje deponija za ugalj
... mbar) više prazni. Odnosno, u analiziranom period je na deponiji TEKo-A deponovano je 10.850.519 t, a izuzeto 10.856.753 t, dok je na deponiji TEKo-B deponovano 18.017.546 t, a izuzeto 18.154.116 t. Znači da je više od 99% deponovanog uglja utrošeno, te da je sa deponije, kao akumulisane rezerve ...
... Kosova i Metohije, prikazana je u tabeli 1. Tabela 1. Veličina deponija uglja u Srbiji, bez KiM Termoelektrana Potrošnja uglja, t/dan Veličina deponije, t Rezerve u uglju, dan Tip deponije Postojanje kopovske deponije Nikola Tesla-A 36.200 530.000 14 polarna da Nikola Tesla-B ...
... kontinuirano snabdevanje, dok se druga (obično na lokaciji potrošača) koristi samo kao rezerva. -100 -50 0 50 100 150 Ja nu ar Feb ru ar M ar t A pr il M aj Ju n Ju l A vg ust S ep te m ba r O kt oba r N ove m ba r D ece m ba r mesec od no s pr oi zv od nj e i p ot ...Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić. "Dimenzionisanje deponija za ugalj" in Jedanaesta međunarodna konferencija o površinskoj eksploataciji OMC, 2014, Zlatibor, 15-18 oktoba 2014, Zlatibor : Jugoskovenski komitet za površinsku eksploataciju (2014)
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Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)
Filip Abramović, Miroslav Popović, Vladimir Simić, Vesna Matović, Radmila Šerović. "Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)" in Materials, MDPI AG (2024). https://doi.org/10.3390/ma17040820
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Linear-motor plunger pump increases lifting efficiency
Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev. "Linear-motor plunger pump increases lifting efficiency" in Oil & Gas Journal (2022)
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BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations
Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina. "BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations" in 17th International Conference of the open and underwater mining of minerals, Sts. Constantine and Helena Resort, Varna, 18-22 September, Bulgaria, Sofia, Bulgaria : Scientific and Technical Union of Mining, Geology and Metallurgy, (2023)
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Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората
... [2] C. Rougeot, F. Guillen, J.-C Plaquevent, G. Coquerel, Cryst. Growth Des., 15 (2015) 2151—2155. [3] C. Xiouras, J. V. Aeken, J. Panis, J. H. T. Horst, T. V. Gerven, G. D. Stefanidis, Crysf. Growth Des., 15 (2015) 5476–5484. [4] K. Suwannasang, A. E. Flood, C. Rougeot, G. Coquerel, Cryst. Growth ...
... [2] C. Rougeot, F. Guillen, J.-C Plaquevent, G. Coquerel, Cryst. Growth Des., 15 (2015) 2151—2155. [3] C. Xiouras, J. V. Aeken, J. Panis, J. H. T. Horst, T. V. Gerven, G. D. Stefanidis, Crysf. Growth Des., 15 (2015) 5476–5484. [4] K. Suwannasang, A. E. Flood, C. Rougeot, G. Coquerel, Cryst. Growth ...М. Милојевић, А. Жекић, П. Дабић, Б. Вучетић, Б. Максимовић. "Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората" in XXVII конференција Српског кристалографског друштва, Чачак, 14-15. јун, 2023., Београд : Српско кристалографско друштво (2023)
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Uticaj geološke neizvesnosti u razvoju rudarskih projekata
Rudarstvo je industrija koja se nosi sa različitim vrstama neizvesnosti i rizika zbog svoje prirode i specifičnosti. Neizvesnost u rudarstvu može poticati iz različitih izvora i uticati na različite aspekte rudarskih projekata. Kao jedan od dominantnih faktora, ističe se geološka neizvesnost. Geološka neizvesnost igra ključnu ulogu u rudarstvu i može značajno uticati na procenu resursa i rezervi, planiranje eksploatacije, ekonomsku isplativost i upravljanje rizicima. Ova neizvesnost se ne može eliminisati, ali se uz primenu adekvatnih standarda i zakona može ...... Rezultati optimizacije sa generisanim NPV za analizirane slučajeve Analiziran Iskopina Jalovina Ruda Fe Limonit Fe Siderit Fe NPV slučaj (t) (t) (t) % (t) % (t) % (mil. 6) optimalne konture Umanjen 15,849,208 ~ 7,909,012 | 7,940,196 ~ 394 · 7,146,42 ~ 30.3 · 794,x054 · 34.,1 58 sadržaj Procenjen ...
... _ 794,054 921,266 1,201,812 0 0 Kontura - Umanjen sadržaj Kontura - Procenjen sadržaj Kontura - Uvećan sadržaj i aJalovina(t) Wmm=mualimonit{t) kz==aSiderit(t) -—• —NPV (mil. ) Slika 9. Grafički prikaz rezultata optimizacije za analizirane slučajeve Analizom rezultata koji su generisani ...
... i znatno veće količine čistog metala. S obzirom da je jedan od ulaznih paramtera optimizacije upravo prodajna cena sirovine izražena u C/t koncentrata, tJ. C/t metala, ova kontura generisaće NPV koji je veći za +40%. Rezultati ukazuju da greške u proceni sadržaja, koje su u dozvoljenim granicama ...Petar Marković, Dejan Stevanović, Mirjana Banković. "Uticaj geološke neizvesnosti u razvoju rudarskih projekata" in XI Međunarodna konferencija "Ugalj i kritični minerali 2023", CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)
Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
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Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу
Милана Мичета (2024)Подземне воде представљају изузетно важан природни ресурс, као и важну компоненту система, којим је представљено тло. У складу са тим, приликом пројектовања плитких темеља на крупнозрном тлу, односно приликом анализе граничне носивости и слегања, треба узети у обзир и утицај воде. Верује се да ниво подземне воде значајно смањује носивост тла, док се слегања значајно повећавају. Terzaghi (1943) је први сугерисао да се потапањем масе тла, његова носивост смањује за половину, док се слегање удвостручује. Циљ овог рада је ...... 1 — 0.145 100 ci = 0.855 > 0.5 t. 1 d Ca(hcigod) = 1 + 0.2 · log{Ž"=} = 1 + 0.2 · log(22%) Ca(hcigoqy = 1+0.2 · log10=1+0.2 ·1 C2(ti=1god) = 1.2 t 10 d Ca(to-i0god) = 1 + 0.2 · log (0—11) =1+0.- · 1og( c ) Co(yciogod) = 1+ 0.2 · log100=1+0.2 ·2 C2(t+=10 god) — 1.+ MuznaHna Muuera, T615/21 ...
... 0000555 8100 y.= 0.000074 Iz h E S(ty=1god) – Cı Ca2 t n ŽiR=1 Sq,=1ıgod) = 0.855 ·1.2 · 100 kPa · 0.000074 S(ty=1god) = 0.0076m = 0.76 cm Iz h E S(ty=10god) — Cı ' Ca2 T n ŽiR=1 S(ty=1ıogod) — 0.855 ·1.4 · 100 kPa · 0.000074 S(t, =1o0 god) = 0.0088 m = 0.88 cm KopektuiHoHH (bakKTop ...
... [615/21 60 3ABPILHIHH PAJI 800 ~ -| -| | a < -| IT pa nu uH a Ho cH Bo cT (k Pa ) > e < PyJIAPCKO-T EOJIOIHIKH ĐAKVJITET OJIPEĐHMBAM5E !T PAHHUHE HOCHBOCTH (Meyerhof u Brinch-Hansen) 465.94 706.82 677.13 659.3 631.33 429.09 NPVI=0.4 m NPV2=2.0 m NPV3=3.9 m ...Милана Мичета. Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу, 2024
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Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders
Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)... and scanning electron microscopy (SEM). 1. T. Kimura, Y. Sekio, H. Nakamura, T. Siegrist, A.P. Ramires, Nafture Mater., 7 (2008) 291. 2. J. Hellsvik, M. Balestieri, T. Usui, A. Stroppa, A. Bergman, L. Berqvist, D. Pabhakaran, O. Eriksson, S. Picozzi, T. Kimura, J. Lorenzana, Phys. Rev. B, 90 (2014) ...
... A7th o nfayanca dE _N 7CS CS - 20 23 the Serbian Society for Ceramic Materials { June 14-16. 2023. Belgrade Serbia — , b " AYNR 1 / V M_ TMK a 780 T / – Edited by: Branko Matović Jelena Maletaškić Vladimir V. Srdić 7 Conference of The Serbian Society for Ceramic Materials Programme and Book ...Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić. "Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders" in Programme ; and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia , Beograd : Institut za multidisciplinarna istraživanja, (2023)
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Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
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Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)