Претрага
993 items
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika
Saša M. Jovanović (2016-05-16)Investiciono okruženje skopčano sa rudarskom industrijom je veoma svojstveno kada seuporedi sa okruženjima koje susrećemo u tipičnim proizvodnim industrijama. Neke odkarakterisitka rudarstva, koje su često naznačene kao jedinstvene su: visok intenzitetinvesticija, dugi predproizvodni periodi, visok rizik i neobnovljivost resursa.Investiranje u sistem otvaranja rudnika predstavlja dobar primer ireverzibilneinvesticije. Takva investicija zahteva pažljivu analizu, jer nakon njene realizacije ona sene može nadoknaditi bez značajnog gubitka vrednosti. Očigledno je da izbor sistemaotvaranja podzemnog rudnika pripada strateškom planiranju...... koje je jednako n 2 . Poštujući jednačinu (19) slučajni hod u vremenu 2 dat je izrazom: n X n W n W nn 112 (22) Slika br. 20 pokazuje da n Wn 2 može imati 3 različita stanja (različite vrednosti). Prvo stanje je n 2 sa verovatnoćom ...
... povezani 0 – petlja Skup čvorova u mreži (N) i veličina (n): veličina mreže N predstavljena je brojem čvorova n u njoj. Ona korespondira sa brojem redova u matrici rastojanja ili sa brojem kolona, pošto je matrica kvadratnog oblika. Za mrežu veličine n, maksimalan broj mogućih grana za neorjentisanu ...
... broj n, n>0, definišemo slučajni proces u vremenu t 0, ttWn na sledeći način: početna vrednost procesa je Wn(0)=0 prostor između dva uzastopna skoka je jednak n 1 skokovi "gore" i "dole" su jednaki i veličine su n 1 uz istu verovatnoću Drugim rečima ako razmotrimo n nezavisnih ...Saša M. Jovanović. "Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-05-16)
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Hydrographic and hydrological characterization of the Vodenička and Rosomačka rivers
Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2017)The Visočica River rises in Bulgaria, on the Berovo Mountain. Its course in Bulgaria is 16.7 km long. It enters Serbia near the village of Donji Krivodol. Up to the village of Pakleštica, or the beginning of Lake Zavoj, its right-bank tributaries are the Krivodolštica, the Vodenička, the Rosomačka and the Dojkinačka. There are no left-bank tributaries. Among the tributaries, water levels and discharges are gauged only on the Dojkinačka River. The Vodenička had also been gauged but only ...... границом и то од Бегове куле (1668 м н. в.) на исток и југоисток преко Мучибабе (1719 м н. в.), Големог гувна (1580 м н. в.), Аџијине корије (1716 м н. в.), затим преко врхова са котама 1622 м н. в., 1613 м н. в., 1609 м н. в., 1423 м н. в., до врха са котом 1368 м н. в. код Равништа, где напушта државну ...
... гувна (955 м н. в.), Росомачког врха (1236 м н. в.), Игиног вртопа (1276 м н. в.), Чуке (1310 м н. в.), Тупанца (1602 м н. в.), а затим преко Штављака излази на државну границу између Србије и Бугарске код врха Добро јутро. Вододелница даље прати државну границу до Бегове куле (1658 м н. в.). Код врха ...
... правцем на југ одвајајући слив Росомачке реке од Воденичке и то преко врха Црнак (1592 м н. в.), затим Мешковог рида (1351 м н. в.), Сенокошке чуке (1328 м н. в.), Љиљка (1326 м н. в.), Градишта (1191 м н. в.) па све до Славиње, где је и ушће Росомачке реке у реку Височицу. Облик слива је издуженог ...Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković. "Hydrographic and hydrological characterization of the Vodenička and Rosomačka rivers" in Pirotski zbornik, Pirot : Narodna biblioteka Pirot (2017). https://doi.org/10.5937/pirotzbor1742001R
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An Efficient Class of Iterative Root-Finding Methods with Applications
Dejan Ćebić, Nebojša Ralević (2021)Dejan Ćebić, Nebojša Ralević. "An Efficient Class of Iterative Root-Finding Methods with Applications" in 2021 IEEE 19th International Symposium on Intelligent Systems and Informatics (SISY), IEEE (2021). https://doi.org/10.1109/SISY52375.2021.9582495
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Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)... Измењено: 2023-10-14 04:33:12 Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan ...
... репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N | Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović ...
... Hydrothermal and Biological Processes chaired by Michael Perfit Title: Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N Authors: Milena Marjanović1, Suzanne M. Carbotte2, Alexandre Stopin3,4, Felix Waldhauser2, Satish C. Singh1, René-Édouard Plessix3, Miloš Marjanović5 ...Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter. "Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N" in AGU Fall Meeting 2021, American Geophysical Union (2021)
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)
Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...... and carbon specific isotope analysis (δ13C) of individual n-alkanes in initial bitumen extracted from two immature oil shale samples (D13 and D16) and corresponding LPs obtained by the OS and the CS pyrolysis. The distribution of n-alkanes (C14–C35) in LPs differs from those in bitumen of raw ...
... distribution of n-alkanes depends on maturity changes that particularly occur in the CS pyrolysis, it also depends on the kerogen precursor material. The prevalence of lower homologues in LPs is consistent with the predominantly algal origin of organic matter (OM) (Gajica et al., 2017). The n-alkane d ...
... respectively). The isotope δ13C values of individual n-alkanes range between –30.2 and –33.8 ‰ with average value of –31.9 ‰ in the sample D13 and from –28.7 to –32.5 ‰ (average value –30.9 ‰) in the sample D16. The δ13C values of individual n-alkanes in LPs from the OS of samples D13 and D16 are ...Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović. "Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134040
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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 ...... Bpe/jHocru oBHx (akropa y (pbyHKnuju yrma yHyTpaniper Tpeba cy npHKa3aHH y TaOezm 1. Ta6ena 1 – Oakmopu nocueocmu no Terzaghi-jy1? o• N N' N N N N o N NZ N N N, N ["] ["] 0 57 1.0 0.0 0.0 25 24.6 14.8 12.0 5.4 10.0. 3.0 10 88 76 36 2.0 0O0.6 O.0 26 264 158 13.6 6. 12.0. 3.5 11 92 #O0 38 2.2 0O ...
... 12.2 86 40 55 2.0 37 650 28.0 61.0 15.8 64.0 12.0 MunaHa Muuera, [615/21 13 3ABPILHIHH PAJI PyJIAPCKO-TEOJIOI(IKH ĐDAKVJITET Q N N' N N' N, NY o NM N N N N, N ["] ["] 22 19.6 12.8 94 44 65 2.2 38 65.0 30.0 65.0 17.2 80.0 14.0 23 21L.O 13.6 1I0.0 4.6 75 2,5 39 65.0 32.4 65.0 18.6 90.0 16 ...
... rzacH: qr = c· N-s-dci, + · De · Nasadaiq + 0.5 · y · B· N,sydyLy (3.1.2.2) “akropH HocHBocTH: N = (Nq -- 1) ·ctggo Kanmajeq=0, moOuja ce N, = 2 + ı = 5.14 G.1.2.2) MunaHa Muuera, [615/21 14 3ABPILHIHH PAJI PyJIAPCKO-TEOJIOI(IKH ĐDAKVJITET N, = tg?(45 + g/2) · etao (.1.2.3) N, = 1.80: (Nq ...Милана Мичета. Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу, 2024
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Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints
Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski. "Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints" in Journal of Geodynamics, Elsevier BV (2024). https://doi.org/10.1016/j.jog.2024.102058
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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... 2, ˆ ˆ ˆ ˆ , ˆ s s s s s n h n h n h n h n h n h s s s y n h y x x x x x x h T y n h y n h y n h h T s S (4.24) gde S oznaĉava broj simulacija. Prostor simulacija za s=1 i k>n, gde se prvih šest kolona odnose ...
... (4.6) Za k>n moţe se prognozirati DOL: 55 6 6 1 0 1 1 1 1 0 1 1 1 1 1 1 0,1, 2, , 1 1 , ˆ ˆ ˆ ˆ 1, 2, , j ja n h j j j j b b y n h y x n h e x n h a a h T y n h y n h y n h h T ...
... x x x x x n h (4.8) 4.1.2 Definisanje ulaznog vektora Skup ulaznih promenljivih se moţe podeliti na dva podskupa; X n h EXP n h SIM n h , gde EXP n h oznaĉava skup koji sadrţi promenljive ĉije vrednosti su dobijene procenom struĉnjaka, a SIM n h oznaĉava ...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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The Reciprocal Algebraic Integers Having Small House
Dragan Stankov (2021)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 Reciprocal Algebraic Integers Having Small House" in Experimental Mathematics (2021). https://doi.org/ 10.1080/10586458.2021.1982425
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Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis
... pyrolysates have similar distributions ог n-alkanes with the prevalence ог mid-chain homologues (C?-C>s5) and the equal abunđance ог odd and even numbeređ n-alkanes (Carbon Preference Index, CPI ~ 1). ја lignite extracts 67С was measured only оп С)5-С31 odd n-alkanes, whereas in the pyrolysis prođucts ...
... whereas unsaturated 17(21)- and 13(18)-ћорепез, 1депићед ın lignite extracts, were not detected. The ratios ог Су, С and Cx17P(H)21fPH)-hopanes to 176(Н)218(Н)-ћорапез obviously decrease from Pyr400 о Pyr 500. Тће same is snelated (0 Cxo17P(H)21o(H)})/Cxo17a(H)21P(H})-hopane | and | Ciil7oa(H)21P(H)?2 ...
... aliphatic јтаспопз (А, В) апа aromatic fiacfions (С, D) ор таптх соа! ехтаст апа соттезропате аша ругођузаге аг 450 "С. n-Alkanes аге ТађеЏед according to феш carbon number, A — 1-n-Alkenes with same number ог carbon atoms as Mm-alkanes: 01-014 -diterpenoids; T1-TS- des-A-degraded non-hopanoid triterpeno1ds ...Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović. "Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis" in 29th International Meeting on Ogranic Geochemistry, 1-6 September 2019, Gothenburg, Sweden , European Association of Organic Geochemists (2019)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... the variance-covariance matrix for standard deviations of coordinate differences was established: 22 , , 22 , 0 0 N N ET d N E N E E N N N E d d d K A K A E E N E d ν σ σσν σ σσ ν ν ν Δ Δ Δ Δ Δ Δ Δ Δ ∂Δ ∂Δ ∂Δ ∂Δ⎡ ⎤ ⎡ ⎤ ⎢ ⎥ ⎢ ⎥ ⎡ ⎤⎡ ⎤∂ ∂ ∂ ∂= ⋅ ⋅ = ⋅ ⋅ =⎢ ⎥ ⎢ ⎥ ⎢ ⎥⎢ ⎥∂Δ ∂Δ ∂Δ ∂Δ⎢ ...
... by using the known equations (Boershch- Komponiets et alli. 1989): Whereby: N i , E i - coordinates of the last traverse point set out; N i-1 , E i-1 - coordinates of the previ- ously set out traverse point; ∆N i i-1, ∆E i i-1 - coordinates of the differ- ence between the traverse points; ...
... are: E GIP =5917.60m i N GIP =1648.12m. The tolerance of the GIP point within the horizontal plane is The coordinates of the starting orientation point OR of the designed mine traverse are also determined by using static GPS method and they are: E OR =6215.61m i N OR =1914.61m, with the ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software
The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić. "Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software" in Podzemni radovi, Beograd : Rudarsko-geološki fakultet (2024)
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Two approaches to compilation of bilingual multi-word terminology lists from lexical resources
In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Two approaches to compilation of bilingual multi-word terminology lists from lexical resources" in Natural Language Engineering, Cambridge University Press (CUP) (2020). https://doi.org/10.1017/S1351324919000615
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Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands
A series of novel ternary Co(II), Ni(II) and Cu(II) complexes containing 2,20-dipyridylamine (dipya), 2,20-bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and ...комплекси прелазних метала, карбоксилатни лиганди, N-лиганди, кристална структура, магнетна својстваJelena Rogan, Dejan Poleti, Ljiljana Karanović, Zvonko Jagličić. "Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands" in Journal of Molecular Structure, Elsevier BV (2011). https://doi.org/10.1016/j.molstruc.2010.11.024
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Izbor metode otkopavanja u horizontalnim pojasima odozgo naniže na primeru ležišta Cu
Tomislav Lazić (2024)Nakon brojnih geoloških i rudarskih istražnih radova, i sa površine terena i iz jame, pristupa se otkopavanju rudnog tela lociranog u centralnom delu jednog velikog ležišta bakra.Eksploatacija se obavlja u odnosu na već postojeći jamski sistem, ali i kroz novoizrađene prostorije. Za postizanje najboljih rezultata primenjena je metoda za otkopavanje rude u I eksploatacionom pojasu vrši „: Metoda otkopavanja sa zapunjavanjem otkopanog prostora odozgo naniže“.Koristi se najvećim delom dizel mehanizacija, a usklađivanjem radnih operacija postiže se veliki kapacitet na ...... 3.2. Specifična potrošnja eksploziva n{oaq eurord . [A gunošnq ) a BAIZO|dSyO BUIOI|O3 oudnyr) N i : . (aq) umuooutod n SUHOXHQ OUZBId | y - |+n ejuut(j}: (q)"N |. : || – AIZOJdSyo PUIOI|ON ...
... VD{SUPU (aq)N | 'B UITUJmlUOy n PUIOI|O03] ~ o · ~ | PAIZO|dSyO PUIOI|ONy ~ - u :u/8x) |G [ ojez:nod'oodS b M» m b u n o s n q c 55| _ Urummjuoy [oig MNJ -| yuoxy:nod-oodg | gdU/S%) o ~ turjosnq ' IO | urupowmod o g }| B TT n 1osnQq ...
... 0 0 a o n BATZO|USD5|o N op |coy = vuproX |G 9 |G + | n tAT1ZO|dSyo + + PuTI[Oy |Ž 9 q q gUTUSITU utuznjuoyj [org | 0 | o BUHUžTIUJ uruooutod · {og PARSN- o 4 GUHUSTIJI uUruulojeZ - [oIg Z O E P o tunosnq E _, n o — ~ ...Tomislav Lazić. Izbor metode otkopavanja u horizontalnim pojasima odozgo naniže na primeru ležišta Cu, 2024
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Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
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Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E
Luka Nikolić (2024)Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ili diskontinualnim načinom rada.Kod kontinualnih sistema, primenjuju se kompleksne rudarske mašine kod kojih se proces odvija neprekidno odnosno bez ciklusa utovara, transporta i odlaganja i najčešće rade u sve tri smene. Rotorni bageri i bageri vedričari, transporteri sa gumenom trakom, odlagači ili deponijske mašine čine tkz BTO ili ...... 6.1.1. Teoretski kapacitet: Qt = 60 * q * n [m3/h rastresite mase] q- geometrijska zapremina vedrice, mš n- broj pražnjenja vedrice u minuti pri maksimalnom broju obrtaja radnog točka, min” Qt = (q, + 0,5 X q„„) x 60 x n [m3/h] Qt = 60 x q, x n [mšh] qp= (qv+o,5*qpp) – računska zapremina ...
... Snaga potrebna za kopanje: Nyu = N * Tlnr — Na = 900 * 0,9 — 58,87 = 751,13 kW Brzina okreta tocka i sila kopanja: 68 Univerzitet u Beogradu – Rudarsko-geološki fakultet Diplomski rad 60*U T7T*D*nm 7r*9*5,85 m n = — U =O ——= = 2,75 — T7T*D 60 60 s n 134,7 n, = = _ = 5,85 m 23 nr- broj ...
... pritisak..................n i vatoe 0,8 MPa 4.7. Elektro pogon na bageru Instalisana snaga..............cn dt dvavotot 3200 KW Jednovremena snaga.............n dt tattttı 2240 KW Radni naponi: Dovod energije............ a addadtoı 6 KW-50 Hz Niski napon snage.............n dt 380 V 42 Diplomski ...Luka Nikolić. Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E, 2024
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Osnovi hidrogeologije
Petar Dokmanović (2021)... čestica i gustine stena: n s d s = −ρ ρ ρ (6.7.2) 51 O s n o v i h i d r o g e o l o g i j e odnosno (iskazano u procentima): n 1 100%d s = − ⋅ ρ ρ (6.7.3) gde su: n- poroznost stene; ρs- gustina ...
... i 1 n = ⋅ = ∑ (5.2.1.4) gde su: Psr - srednje padavine (mm); f i - površina između susednih izohijeta; Pi - srednja visina padavina između dve izohijete; F - ukupna površina sliva; n - broj elementarnih površina (između susednih izohijeta). 29 O s n o v i ...
... rudarskih radova i odvodnjavanja 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 ...Petar Dokmanović. Osnovi hidrogeologije, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2021