Претрага
565 items
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... isocli- nal folds F, at high to almost right angles (parallel to the plane of image in Fig. 5b) has been observed at several outcrops. Therefore, an earlier foliation (S;) is presumed to be initially folded into F, and subsequently refolded into F, folds. Away from the hinges of F, folds, the supposed ...
... folds F». In these hinge zones, S, is often folded into metre-size parasitic F, folds, whereas S, represents the axial-plane cleavage. As the foliation S, was observed only at hinges of folds F», its statistical distribution (Fig. 4b) reflects the geometry of limbs of large recumbent folds F,. The ...
... 42%34/46.569"N). Coin diameter 24 mm. e Isoclinal folds F, from Vranjska Banja area refolded by asymmetric fold F, with axes b, perpendicular to the axis b, (22%"38.741”E, 42%033.75"N). S, represents an axial-plane cleavage of folds F,. f Layer-parallel train of asymmetric tapered boudins from Vran- ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... https://doi.org/10.1002/cite.330630604. Rodriguez-Reinoso F. The role of carbon materials in heterogeneous catalysis. Carbon. 1998; 36: 159—175. https://doi.org/10.1016/S0008-6223(97)00173-5. Glaser B, Haumaier L, Guggenberger G, Zech W. The 'Terra Preta' phenomenon: a model for sustain- able ...
... from soiling and to reduce the required amount of material. Ag/AgCI electrodes filled with 4 mM NaC!I were used for potential measurement. 2% (w/w with respect to the mass of sand) of charcoal was added to air-dry sand and the materials were mixed by stirring with a spatula. The mixture was wetted ...
... imaginary part o" of the complex electri- cal conductivity of pure sand F36 saturated with 4 mM NaCI solution and mixtures of this sand with 2% (w/w) of the different chars with the same electrolyte in a double logarithmic lot in the frequency range from 10 mHz to 10 kHz. All chars show larger o" ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude
Ivana M. Jovanović (2016-01-13)U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže... Proceedings of: International Conference on Biomedical Engineering and Computer Science (ICBECS), 23-25 April, Wuhan, China, pp. 375–378 305. Yang, F., Sun, W., Hu, Y., 2012. QSAR analysis of selectivity in flotation of chalcopyrite from pyrite for xanthate derivatives: Xanthogen formates and thionocarbamates ...
... et al. (2009), Raj and Sathya (2013)]. Slika 29 predstavlja jednostavan primer principa funkcionisanja SVM. w · x + b = 0 w · x + b = ‒1 w · x + b = + 1 b||w || ρ w r r 1 Potporni vektori Slika 29. Šematski prikaz linearnog SVM klasifikatora. Neka je X skup koji sadrži ...
... tabeli 32: df – broj stepeni slobode; SS – suma kvadrata odstupanja; MS – srednja kvadratna greška (SS/df); F – vrednost F-testa; SF (Significance F) – p-vrednost (statistička značajnost) F-testa Tabela 33. Statistička analiza regresionih linearnih jednačina EMM modela. C SE t p L95 U95 CCU ...Ivana M. Jovanović. "Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-01-13)
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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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Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)
In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...Pavle Tančić, Aleksandar Kremenović, Predrag Vulić. "Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)" in Powder Diffraction, Cambridge University Press (CUP) (2019). https://doi.org/10.1017/S0885715619000897
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Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina
Dragoslav Rakić, Nikola Božović (2024)U sklopu prve deonice autoputa E-80 Niš – Merošina, izgrađen je nadvožnjak u zoni sela Balajnac koji je oslonjen na tri stubna mesta na međusobnom rastojanju od oko 26 m. Svaki stub je fundiran na šipovima i to sa predloženim rasporedom od 2 šipa u grupi na međusobnom rastojanju od 3.6 m. U radu su na osnovu izvršenih geotehničkih istraživanja terena, analizirani rezultati nosivosti vertikalno opterećenog šipa prečnika 1.2 m i dužine šipa od L = 23 m. Analiza ...Dragoslav Rakić, Nikola Božović. "Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina" in Peti Srpski kongres o putevima, Beograd, 30-31.05.2024., Beograd : Srpsko društvo za puteve "Via Vita" (2024)
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... UDDAMERI V., HERNANDEZ, A.E. & ESTRADA, F. (2014). A fuzzy simulation-optimization approach for optimal esti- mation of groundwater availability under decision maker uncertainty. Environmental Earth Science, 71 (6): 2559–2572. VAN LAARHOVEN, P.J.M. & PEDRCYZ, W. 1983. A fuzzy extension of Saaty’s priority ...
... and the ultimate values of the weights): W’ = (0.56,1,0.01) W = (0.36,0.64,0.01) Criterion 2 (matrix, the value of fuzzy synthetic extent, the degree of possibility, the weight priority vectors and the ultimate values of the weights): W’ = (0.06,1,0.72) W = (0/03,0.56,0.4) Criterion 3 (matrix, the ...
... Then the minimum value was selected, as described in Step 3, and the weight vectors obtained as: W’ = (0.9,1,0.81) Finally, the ultimate criterion weights were obta- ined through normalization: W = (0.33, 037, 0.3) Shown below are the criterion - based evaluation of alternatives (where three matrices ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... 0, i f d ≤ 0 d p , i f 0 < d ≤ p 1, i f d > p IV Nivoj criterion—stage criterion P (a, b) = 0, i f d ≤ 0 1 2 , i f 0 < d ≤ p 1, i f d > p V Criterion with linear preference and domain of indifference P (a, b) = 0,i f d ≤ 0 d − p p − q ,i f 0 < d ≤ ...
... shorter text, the sign d is involved, d = f(a) − f(b). According to Brans and Mareschal (1984) [28], there are six types of preference function: I “Simple” criterion P (a, b) = { 0, i f d ≤ q 1, i f d > q II Quasi criterion P (a, b) = { 0, i f d ≤ 0 1, i f d > q III Criteria for linear preference ...
... than b according to criterion f if f(a) < f(b) [27]. The value of the preference function is within the interval [0, 1], i.e., higher preference is presented by higher function value and vice versa. The preference function is defined as: P (a, b) = { 0, i f d ≤ 0 1, i f d > 0 In this case, the following ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
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Development of integrated fuzzy model for mine management optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)... V(M, > W)= sup |min (Jr, () , R,Ma (9))] . z>u If there are such pairs (z,y) that r > y and a (T) = HM,(U) = l, then V (Mi > M») = 1. Given that Mi and M»are convex triangular fuzzy number, it follows that V(]Wl > ]Wz) =LlL if si > 5 1, if 2 Ž ı V (M> > Mi) = hgt(My n M>) = a (e) NA f hzd ...
... undertaken of all the elements in the matrix from the previous step. This results in m values of step analyses for each element of set X: ]W;„]Wž, ... ,]W;il, + = 1,2,...,n, where all MŠ„» J = 1,2,...,m are triangular fuzzy numbers. Then, taking into account the membership function of the triangular ...
... zone of the ore deposit described in the paper. LEGEND: l — i , 'Syncline and anticline axes: <_ Bebpalj mining area %774 verticall or inclined W |_ 7@,5( Byane d niobe es Fiysch: conglomerates, / / \Unlabeled and non-characterized calcarenites, marlymicrites / faut covered, observed and marls; ...Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of integrated fuzzy model for mine management optimization" in Comptes rendus de l'Académie Bulgare des Sciences (2023)
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Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support
Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović. "Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support" in Journal of Vibroengineering (2017). https://doi.org/10.21595/jve.2016.17321
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Развој модела употребног квалитета помоћне механизације на површинским коповима лигнита
Драгица Јагодић Крунић (2021)Тренутно стање помоћне механизације на површинским коповима лигнита је незадовољавајуће узроковано пре свега старошћу и неблаговременом заменом машима услед чега је расположивост недовољна а трошкови експлоатације и одржавања високи. Тренутно стање и захтеви који се постављају пред ове машине указују на неопходност оптимизације процеса управљања помоћном механизацијом. Одређивање оптималног времена замене и преосталих могућности је најодговорнији управљачки задатак који треба да буде заснован на свеобухватном сагледавању економских, техничких и других узрочно последичних веза. Са економског аспекта гледано треба одржавати ...помоћна механизација, употребни квалитет, ефективност, расположивост, сигурност функционисања, ризик, трошкови животног циклуса, фази логика, Монте Карло метода... е, ознаке за парцијалне и синтезне показатеље подразумевају следеће: 124 V1 = R , V2 = M , V3 = F → W = Е ; V1 = R , V2 = M → W = А ; V1 = R , V2 = M , V3 = МS → W = D . I-а ниво синтезе: модел min- max фази композиције У даљем поступку синтезе примењује се следећа ...
... парцијалних показатеља поузданост (R), погодност одржавања (М) и функционалност (F), применом max-min композиције, сходно поглављу 7.3, где ознаке у општем облику модела подразумевају следеће: V1 = R , V2 = M , V3 = F и W = Е. Процес процене синтезног показатеља Е за дозер А1 приказан је у наставку ...
... Србије” Београд, Огранак РБ „Колубара” Лазаревац. [122] Romeu, J., “Kolmogorov–Smirnov GoF test," RAC START, 10(3), 2003. [123] J. Dick, F. Y. Kuo, G. W. Peters, and I. H. Sloan, editors. Monte Carlo and quasi-Monte Carlo methods 2012. Springer, 2013. ...Драгица Јагодић Крунић. Развој модела употребног квалитета помоћне механизације на површинским коповима лигнита, Београд : [Д. Јагодић Крунић], 2021
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A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian
Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...... frequency and attestations. # subproperty d e f i n i t i o n f o r f requency in t w i t t e r corpus : atv itkoFrequency r d f s : subClassOf f r a c : CorpusFrequency . : atv itkoFrequency r d f s : subClassOf [ a owl : R e s t r i c t i o n ; owl : onProperty f r a c : corpus ; owl : hasValue
... frequency assessment ( in t w i t t e r corpus ) : lopov f r a c : f requency [ a : atv i tkoFrequency ; r d f : va lue "17"^^ xsd : i n t ] . # usage examples as a t t e s t a t i o n s : lopov f r a c : a t t e s t a t i o n attes tat ion_1324567 ; at tes tat ion_1324567 a f r a c : At t e s ta t i on ...
... corpname=user%2Franka%2Fatwitco> ; r d f s : comment " Immoral or c r i m i n a l a c t i v i t i e s " ; f r a c : l o c u s : locus_2415677 ; f r a c : quotat ion " s v i p o l i t i č a r i su l o p o v i . " . : locus_2415677 a : Occurrence ; n i f : beginIndex 19 ; n i f : endIndex 25 . and emoticons ...Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih. "A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian" in 3rd Conference on Language, Data and Knowledge (LDK 2021), MDPI AG (2021). https://doi.org/10.4230/OASIcs.LDK.2021.13
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Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji
Dragoslav Rakić (2013-05-10)U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja... mase dobijene sušenjem do konstantne vrednosti (gravimetrijskog sadržaja vlage): d w v w γ = ⋅ γ (3.5) 1w w v w γ = ⋅ γ + (3.6) (1 ) sv n G w= − ⋅ ⋅ (3.7) w w v w v ⋅ γ = γ − ⋅ γ (3.8) gde je: v - zapreminski sadržaj tečnosti in situ ...
... γ kN/m3 d= W/V = (1+w) γ ⋅ γ Koeficijent poroznosti e m3/m3 p s n e = V /V = 1-n Zapreminska težina čvrstih čestica γs kN/m3 1 s d s s W V n γ γ = = − Zapreminski sadržaj vode v m3/m3 - % v d w V v w V γ = = ⋅ γ Zapreminski sadržaj gasa a m3/m3 - % aV a n w V = = − ...
... se na osnovu sledećeg izraza 3 ε= ⋅ e f f sfdq G d (5.29) gde dεesf predstavlja povećanje elastičnih smičućih deformacija vlaknastih čestica, a Gf je modul smicanja vlaknastog materijala koji se izražava sledećom jednačinom 2(1 ) f f f E G = +ν (5.30) gde je νf Poasonov ...Dragoslav Rakić. "Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-05-10)
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Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji
Dragoslav Rakić (2013-05-10)U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja... mase dobijene sušenjem do konstantne vrednosti (gravimetrijskog sadržaja vlage): d w v w γ = ⋅ γ (3.5) 1w w v w γ = ⋅ γ + (3.6) (1 ) sv n G w= − ⋅ ⋅ (3.7) w w v w v ⋅ γ = γ − ⋅ γ (3.8) gde je: v - zapreminski sadržaj tečnosti in situ ...
... γ kN/m3 d= W/V = (1+w) γ ⋅ γ Koeficijent poroznosti e m3/m3 p s n e = V /V = 1-n Zapreminska težina čvrstih čestica γs kN/m3 1 s d s s W V n γ γ = = − Zapreminski sadržaj vode v m3/m3 - % v d w V v w V γ = = ⋅ γ Zapreminski sadržaj gasa a m3/m3 - % aV a n w V = = − ...
... se na osnovu sledećeg izraza 3 ε= ⋅ e f f sfdq G d (5.29) gde dεesf predstavlja povećanje elastičnih smičućih deformacija vlaknastih čestica, a Gf je modul smicanja vlaknastog materijala koji se izražava sledećom jednačinom 2(1 ) f f f E G = +ν (5.30) gde je νf Poasonov ...Dragoslav Rakić. "Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-05-10)
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Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems
Dejan Ćebić, Nebojša M. Ralević (2021)Dejan Ćebić, Nebojša M. Ralević. "Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems" in Journal of Mathematical Chemistry, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10910-021-01253-3
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Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia
Оливера Крунић (2021)Оливера Крунић. "Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia" in Рационално коришћење земљишта и вода у Србији - Sustainable Use of Land and Water in Serbia- Serbian Academy of Sciences and Arts; Scientific Conferences Volume CXCVII; Department of Chemical and Biological Sciences, Book 19, Српска академија наука и уметности (2021)
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... g, Volume 29, Issues 2–3, 412-417. Chen W., Peng J., Su Y., Zheng L., Wang L., Jiang Z., (2009) Separation of oil/water emulsion using Pluronic F127 modified polyethersulfone ultrafiltration membranes, Sep. Purif. Technol.66, 3, 591-597. Civan F., (2007) Chapter 20 - Reservoir sand migration ...
... Fedilino, A. (2003) Fiscal Policy Formulation and Implementation in Oil-Producing Countries. International Monetary Fund, Washington, DC. Deng F., Deng J., Yan W., Zhu H., Huang L., Chen Z., (2013) The influence of fine particles composition on optimal design of sand control in offshore oilfield, J ...
... Science & Technology Books, 288. Guo T., Zhang S., Wang L., Sui W., Wen H. (2012) Optimization of proppant size for frac pack completion using a new equipment, Journal of Petroleum Science and Engineering, Volumes 96–97, 1-9. Gutierrez F., Hallquist A., Shippen M., Rashid K., (2007). “A new approach ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... g, Volume 29, Issues 2–3, 412-417. Chen W., Peng J., Su Y., Zheng L., Wang L., Jiang Z., (2009) Separation of oil/water emulsion using Pluronic F127 modified polyethersulfone ultrafiltration membranes, Sep. Purif. Technol.66, 3, 591-597. Civan F., (2007) Chapter 20 - Reservoir sand migration ...
... Fedilino, A. (2003) Fiscal Policy Formulation and Implementation in Oil-Producing Countries. International Monetary Fund, Washington, DC. Deng F., Deng J., Yan W., Zhu H., Huang L., Chen Z., (2013) The influence of fine particles composition on optimal design of sand control in offshore oilfield, J ...
... Science & Technology Books, 288. Guo T., Zhang S., Wang L., Sui W., Wen H. (2012) Optimization of proppant size for frac pack completion using a new equipment, Journal of Petroleum Science and Engineering, Volumes 96–97, 1-9. Gutierrez F., Hallquist A., Shippen M., Rashid K., (2007). “A new approach ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone
Aleksandar Luković (2021)Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...... American Mineralogist, 69, 754-770. Whalen, J.B., & Chappell, B .W., (1988): Opaque mineralogy and mafic mineral chemistry of I- and S-type granites of the Lachlan Fold belt, southeast Australia. American Mineralogist, 73, 281- 296. Xia, F., Brugger, J., Chen, G., Ngothai, Y., O’Neill, B., Putnis, A ...
... G., Brugger, J., Skinner, W. M., Chen, G., & Pring, A., (2010): An experimental study of the mechanism of the replacement of magnetite by pyrite up to 300°C. Geochimica et Cosmochimica Acta, 74(19), 5610–5630. Rabbia, O. M., Hernández, L. B., French, D. H., King, R. W., & Ayers, J. C., (2009): The ...
... Crystal structure of a natural titanomagnetite. Can. Mineral., Vol. 13, 86-88. Sun, W. D., Liang, H. Y., Ling, M. X., Zhan, M. Z., Ding, X., Zhang, H., Yang, X. Y., Li, Y. L., Ireland, T. R., Wei, Q. R., & Fan, W. M., (2013): The link between reduced porphyry copper deposits and oxidized magmas. Geochim ...Aleksandar Luković. Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone, Beograd : [A. Luković], 2021
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Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world
Bogoljub Vučković, Bojan Dimitrijević (2023)The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...... ravel E 47 Quaternaryclays 00008 322 Quaternarysands – .8. 20 | —= Intralayer wastel coal 000008 42 Floorsandicoal WAAA 4 O Roofwaste llcoal W III IIIAAAAE 58 ucoa WIIJ—ZJČZŽđA _— I — Intralayer waste li coal WWWWWWWDENE 28 Floorsandilcoal 000000 000000001001001010000101010101010:010100 ...
... BHNNININANN 15 ucoa! J~ —— 20 Intralayer waste IHicoal WWWWWwwwww. 13 Fioorsand ıı III I IN / Floor clayII-deepseated – |00 1} Surface soil, humus . W ..008 39 Quaternarygravel H00l III 140 Guaternary clays 8985 13 Quaternary sands WNNH 12 - —________J+ Wntralayer waste l coal WG 0008 63 Flo ...
... 06.007. 7. Cheng Y., Paltseva A., Li 1., Morin T., Huot H., Egendorf S., Su Z., Yolanda R., Singh K., Lee L., Grinstein M., Liu Y., Green K., Wai W., Wazed B., Shaw R., 2015 – Trace Metal Contamination in New Vork City Garden Soil - Soil Sci 180, Technical article 8. Chonokhuu S., Batbold C., ...Bogoljub Vučković, Bojan Dimitrijević. "Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world" in 9th International Conference Mining and Environmental Protection, 24–27. May 2023, Sokobanja, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)