Претрага
1224 items
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Some models for determination of parameters of the soil oscillation law during blasting operations
... Equation (3), we obtain: v “ Kv ¨ ˝ 3 b 3¨Q 4¨π r ˛ ‚ n “ Kv ¨ ˜ 3 c 3 4 ¨ π ¸n ¨ ˆ 3 ? Q r ˙n “ Kv ¨ K1 ¨ ˆ r 3 ? Q ˙´n “ K ¨ ˆ r 3 ? Q ˙´n “ K ¨ R´n (5) where as: ˜ 3 c 3 4 ¨ π ¸n “ K1; Kv “ K K1 ; r 3 ? Q “ R (6) where: R—reduced distance is the distance from blasting ...
... marked ´n, meaning that: ∆v v ∆R R « ´n (7) Thereby it can be considered that: lim∆RÑ0 ∆v v ∆R R “ ´n, which means: dv v dR R “ ´n (8) Equation (8) can be written in the form: dv v “ ´n ¨ dR R , where by integration is obtained: ż dv v “ ´n ¨ ż dR R , namely: logv “ logR´n ` logC (9) ...
... Sm—surfaces of some trapezoids. R Rk Rk R RR RR £R R Figure 2. Graphic view of the polygonal line, N-1 of the trapezoid and curve v = K- R™". If: Ry —R Rigi -Ri =h= a (19) then, for S7, the following value is obtained: h Srp = = [01 +2(v2 +03 +...+U0N-1) + UN] (20) 2 If points R; are not equally spaced, ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Dimenzionisanje deponija za ugalj
... Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Dimenzionisanje deponija za ugalj | Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić | Jedanaesta međunarodna konferencija ...
... 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 ro šn je u gl ja , h ilj ad a to n a Tabela 2. Količina uglja koja se ...
... available at: www.dr.rgf.bg.ac.rs DIMENZIONISANJE DEPONIJА ZA UGALJ Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić Univerzitet u Beogradu, Rudarsko-geološki fakultet, Đušina 7, Beograd, dinko.knezevic@rgf.bg.ac.rs IZVOD U ovom radu data je analiza ...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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Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...... i ij j i i i i i ij j i i i i x x S w x x x x R w x x (13) gde je wi – težina kriterijuma. Računanje vrednosti za Qj (kompromisno rešenje). * * ( ) ( )(1 ) ( ) ( ) j j s s Rj R Q v v s s R R (14) gde je: * * min ...
... min ; max min ; max j j j j j j j j S S S S R R R R (15) Rangiranje se izvodi sortiranjem alternativa prema merama Rj, Sj i Qj. Tabela 8 prikazuje rezultate primene VIKOR me- tode za razmatrani problem. Iz prikazane tabele, može se uočiti da su rezultati rangiranja isti pri ...
... ..., ; 1,..., n ij ij m ij i x r i m j x (17) max , 1,..., ; 1,..., n ij ij i x r i m j x (18) Nakon normalizacije, matrica se ponderiše njenim težinskim koeficijentima, , 1,..., ; 1,..., nij i ijp w r i m j (19) Potom se formiraju ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
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A necessary and sufficient condition for an algebraic integer to be a Salem number
Dragan Stankov (2019)We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.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. "A necessary and sufficient condition for an algebraic integer to be a Salem number" in Journal de theorie des nombres de Bordeaux (2019). https://doi.org/10.5802/jtnb.1076
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals
Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić. "Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals" in Review on advanced materials science, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/rams-2020-0043
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Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... Table 6. The ranking of partial indicators of the availability of new and old machines. AHP Preferences B1-N (B2-N, B3-N) B1-O B2-O B3-O R M S R M S R M S R M S R 1 1/2 1/3 1 1 1 1 1/3 1/3 1 2 2 M 2 1 1/2 1 1 1 3 1 1 1/2 1 1 S 3 2 1 1 1 1 3 1 1 1/2 1 1 As a representative example in the continuation ...
... composition is shown (steps i—vii). Aj = max{min(R;, M,, S;)} (8) (i) Three fuzzy numbers R;, M; 1S; are defined through membership function p and class j = 1 to n: R; = (UR(1), ++ UR(j)s +++ LR(n))i Mi = (Ha(ays «++ MMi) +7 Haan) ” Si = (Us(ajy «+7 Hs(j)r «+7 H8(n))- y (ii) The membership functions ...
... ‘D’ ‘E’ ‘A’ ‘B’ ‘C’ ‘D’ ‘E’ 1. R 0.7 0.3 0.8 0.2 0.6 0.4 M 0.4 0.6 0.7 0.3 0.5 0.5 S 0.3 0.7 0.6 0.4 0.6 0.4 2. R 0.6 0.4 0.6 0.4 0.3 0.7 M 0.6 0.4 0.8 0.2 0.6 0.4 S 0.5 0.5 0.4 0.6 0.5 0.5 3. R 0.9 0.1 1 1 M 0.4 0.6 0.6 0.4 0.7 0.3 S 0.2 0.8 0.6 0.4 0.7 0.3 4. R 0.5 0.5 0.7 0.3 0.4 0.6 M 0.7 0 ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР ...
... imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia | Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić- Petrović, Igor Peshevski | Earth Science Informatics | 2024 | | 10.1007/s12145-024-01243-4 http://dr.rgf.bg ...
... data for predictive mapping of a complex geo-tectonic unit: a case study ofthe East Vardar Ophiolite Zone, North-Macedonia Filip Arnaut! · Dragana Đurić* · Uroš Đurićš · Mileva Samardžić-Petrović* · Igor Peshevski“ Received: 12 July 2023 / Accepted: 28 January 2024 / Published online: 20 February ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
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Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina
Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...... Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Sitni, ali ...
... ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina | Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković | Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023. | 2023 | | http://dr.rgf ...
... katarina.bogicevic(qyrgf.bg.ac.rs Prof. dr Draženko Nenadić, Univerzitet u Beogradu-Rudarsko-geološki fakultet, Kamenička 6, 11000 Beograd Dr. Dragana Đurić, Prirodnjački muzej, Njegoševa 51, 11000 Beograd Dr. Mihailo Jovanović, IPHES, Institut Catala de Paleoecologia Humana i Evoluci6 Social in ...Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković. "Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina" in Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023., Ilidža : Udruženje geologa Bosne i Hercegovine (2023)
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Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia
... Emo Marton, Vesna Cvetkov, Dragana Jovanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia | Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović | Environmental, ...
... , Slovakia Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zoneof Serbia VESNA LESIĆ!, EMO MARTON?, VESNA CVETKOV" and DRAGANA JOVANOVIĆ! 1 – Republic Geodetic Authority, Department ofGeomagnetism and4erohomy, Bulevar vojvode Mišića 39, 11000 Belgrade, Serbia 2 — Mining ...
... stable core: Tectonic implications. Tecfonopihnsics 700701, |-- 18. Schmid, S.M., Bemoulli, D., Figenschuh, B., Matenco, B., Schefer, S., Schuster, R., Tischler, M. & Ustaszewski, K. 2008. The Alpine — Carpathian — Dinaric orogenic system: correlation and evolution of tectonic units. Swiss Jovw”nal ...Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović. "Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia " in Environmental, Structural and Stratigraphical Evolution of the Western Carpathians, 11th ESSEWECA Conference, Geophysical Institute, Slovak Academy of Sciences Bratislava (2018)
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Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications
Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалимаDarko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic. "Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications" in Science of Sintering, Bor, August 2024, National Library of Serbia (2024). https://doi.org/10.2298/SOS240701029B
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Минерагенија зеолитских туфова Србије
Vladan Kašić (2018-02-05)Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...... Vladan D. Kašić MINERAGENY OF ZEOLITIC TUFFS OF SERBIA Doctoral dissertation Belgrade, 2017 Ментор: Др Драгана Животић, ванредни професор, економска геологија. Универзитет у Београду, Рударско-геолошки факултет, Београд Чланови комисије: Др Владимир ...
... се захвалим свима који су на било који начин допринели да ова дисертација добије овакав облик. Ментору ове докторске дисертације проф. др Драгани Животић и професорима др Владимиру Симићу и др Радету Јеленковићу желим да се захвалим на несебичном ангажовању, корисним саветима и подршци коју су ...
... Publisher: Tehnical Faculty at Bor of The University of Belgrade and Mining and Metallurgy Institute Bor, Serbia, 378-382. Кашић В., Симић В., Животић Д., Радосављевић-Михајловић А., Стојановић Ј. (2017): Минералошка и кристалохемијска својства минерала ХЕУ-типа и лежишта зеолитских туфова Србије ...Vladan Kašić. "Минерагенија зеолитских туфова Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-05)
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Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik
Tunel „Debelo brdo“ nazvan je po najizraženijem relјefnom obliku na ovoj drugoj deonici autoputa E-80 Niš – Pločnik. Osnovnu geološku građu na lokaciji tunela čini Mio-Plioceni kompleks heterogenog litološkog sastava. Izgradnja tunela je predviđena delom u otvorenom iskopu dužine 240 m, a delom sa podzemnim iskopom dužine 190 m. U zoni tunela, padina je okarakterisana kao uslovno stabilna, pa bi neadekvatna zasecanja mogla da izazovu klizanja terena. Iz tih razloga, u okviru rada posebno su prikazani geotehnički uslovi izgradnje ...... Irena Basarić Ikodinović, Dragan Lukić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik | Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić | Četvrti Srpski ...
... u intervalu - 75.0 kPa -220 odnosno, za l gl,pr) - 58.0 kPa, a -230. Kako j cr = 10-18 kPa trenja r = 10-120 za laporovite gline (gl-pr ), tj. cr = 9-14 kPa, i r = 7-110 za sloj lapora glinovitih (Lgl,pr). Zavisnosti od h frakcija, prikazane su na Slici 8. se u jednom uskom ...
... Opiti standardne penetracije 8 SPT opita Dilatometarski opit - 1 opit Izvedene su dve pijezometarske konstrukcije G ja 10 (ES-23 do ES 32), R 3 profila (SP-7 do SP-9) I - U Laboratorisjkim ispitivanjima je za glinovito-laporoviti Mio-Plioceni kompleks eno da se radi o 110%. Ic > ...Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić. "Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik" in Četvrti Srpski kongres o putevima, 2-3. jun 2022., Beograd : Srpsko društvo za puteve Via Vita (2022)
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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15
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Classification of mining waste landfills according to legislation in Serbia
... according to legislation in Serbia Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Classification of mining waste landfills according to legislation in Serbia | Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić ...
... deponija rudarskog otpada prema zakonskoj regulativi u Srbiji DRAGANA D. NIŠIĆ, Univerzitet u Beogradu, Pregledni rad Rudarsko-geološki fakultet, Beograd UDC: 622.7.097(497.11) UROŠ R. PANTELIĆ, Univerzitet u Beogradu, 504.5/.6:622(497.11) ...
... rizičnosti, pri čemu je većina njih bazirana na blago modifikovanim klasifi- kacijama namenjenim branama za akumulaciju vode Adresa autora: Dragana Nišić, Univerzitet u Beogra- du, Rudarsko-geološki fakultet, Beograd, Đušina 7 e-mail: dragana.nisic@rgf.bg.ac.rs Rad primljen: 07.09.2021. ...Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić. "Classification of mining waste landfills according to legislation in Serbia" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2021). https://doi.org/10.5937/tehnika2105575N
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Classification of Neolithic Ceramics and Clays According to Their Morphological Characteristics
Gajić Kvaščev Maja, Svoboda V., Jančić-Heinemann R., Dimitrijević M., Milovanović Dragan, Polić Radovanović Suzana (2012)Gajić Kvaščev Maja, Svoboda V., Jančić-Heinemann R., Dimitrijević M., Milovanović Dragan, Polić Radovanović Suzana. "Classification of Neolithic Ceramics and Clays According to Their Morphological Characteristics" in Mediterraneum Meeting Use of Multivariate Analysis and Chemometrics in Cultural Heritage and Environment-CMA4CH 2012, Rome, Italy:Rome University, La Sapienza (2012)
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Koncept revitalizacije pogona rotornog točka bagera u uslovima površinskih kopova lignita Srbije
Jovančić Predrag, Ignjatović Dragan, Đenadić Stevan, Miletić Filip. "Koncept revitalizacije pogona rotornog točka bagera u uslovima površinskih kopova lignita Srbije" in Zbornik radova, IX simpozijum sa međunarodnim učešćem „Rudarstvo 2018“, Vrnjačka banja, 22-24 maj 2018, Beograd:Privredna komora Srbije (2018): 91-99
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Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia
We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić. "Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia" in Acta Geophysica, Springer (2019). https://doi.org/10.1007/s11600-019-00328-9
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Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS
Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan. "Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS" in X Međunarodna konferencija UGALJ, Zlatibor, Srbija, 13-16. Oktobar 2021., Jugoslovenski komitet za površinsku eksploataciju (2021)
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The ‘Umka’ landslide
We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoringUroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević. "The ‘Umka’ landslide" in Journal of Maps, Informa UK Limited (2024). https://doi.org/10.1080/17445647.2024.2418580