Претрага
1206 items
-
Properties and characterization of a clay raw material from Miličinica (Serbia) for use in the ceramic industry
Milošević M., Logar M. (2017)Milošević M., Logar M.. "Properties and characterization of a clay raw material from Miličinica (Serbia) for use in the ceramic industry" in Clay Minerals 52 no. 3, UK:The Mineralogical Society (2017): 329-340. https://doi.org/https://doi.org/10.1180/claymi
-
Optimizacija vodosnabdevanja podzemnim vodama u Srbiji
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Optimizacija vodosnabdevanja podzemnim vodama u Srbiji" in Zbornik radova XIV srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 17-20. maj 2012. godine , Beograd : Rudarsko-geološki fakultet (2012)
-
Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika
Anastasija Radovanović (2024)Za potrebe izrade rada na Master akademskim studijama ,,Rudarsko-geološkog fakulteta,,, studijskog programa Geotehnika, pod mentorstvom prof. dr Gordane Hadži-Niković , izvršena je detaljna analiza stabilnosti kosina nasipa na Vranjskoj petlji. Geotehnička istraţivanja i ispitivanja terena izveo je “Zavod za geotehniku iz Instituta za puteve a.d. Beograd”, a investitor je “Javno preduzeće, Putevi Srbije”.Metodološki pristup koji je korišćen za analizu stabilnosti kosina nasipa jeste kabinetsko istraživanje dostavljene dokumentacije i geostatički proračuni analize stabilnosti kosina nasipa, korišćenjem savremenih softverskih alata.Krajnji zaključak izvedenih istraţivanja je da ...... ypeheH M 36ujeH. Hacun npxaBHor rnyra lIb-442 v nokanHMXx caobpahajHMua on npobuHe M neCKOBMTOr M uIrbyHKOBMTOr MaTepujana. Sa Hacune je yrnaBHOM KDpI/ILUheH MaTepMjal'I M3 nocmjehmx KkaMeHoO:;oMa M UITbyHKOBMTO-TeCKOBMTM nero3MTM M3 J. Mopane. Hacun ucno/n konoBo3a je TexHMukuM ypef}eH M 36\jeH ...
... slojeva geosintetika m, dobija se da je: _ M+ Žž Ti i E s MD 13 ym Slika 4.3 – Stabilnost kosine sa kružnom kliznom površinom ojačane sa m redova geosintetika gdje Je: – Ti- sila u geosintetiku u sloju i - yi- krak sile T; u odnosu na centar rotacije O – _ m- broj slojeva geosintetika ...
... Moment=4808.44 kN-m Driving Moment=7050.06 kN-m Resisting Horizontal Force=73.6977 kN Driving Horizontal Force=108.054 kN 60 70 80 90 1? 0 90 80 Safety Factor 0. .500 .000 .500 .000 .500 .000 .500 .000 .500 .000 .500 .000+ o OI OI m m OO . N NTE ...Anastasija Radovanović. Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika, 2024
-
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)
-
Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... function of the formation volume factor, the oil formation volume factor Bo (m*/m*), and the water formation volume factor Bw (m?/m?): qo+qw 32 n qoBo+qwBw — qo - oil production, (m*/m*) — qw- water production, (m?/m?) If all the gas passes through the pump, the volumetric efficiency increases ...
... Wi I I I I I I | I I I I I I -š i •— i m. m.s..mn .:wš·.m w m j m m·:.·&·n.•um·,!_&· “ m MALULIKKKIKI ı- - K -. | i WLa| — . } _ || || -8 ı- | || || | m ” l I I I I I I I I _\n S E I K K N K U E - y r ...
... lo ci ty (m /s ) e PR Ve lo ci ty (m /s ) e 0 MK 2 % “ M O NM M % 0 '#4”Rn 8 3 ć&s20 x 16 20 &&340 28 «' «%#%O PR Positon (cm) Crank Angle (degrees) Plunger Veloctty Plot Maximum Upstroke Polished Rod Velocity (m/s) : ,638 Maximum Downstroke Polished Rod Velocity (m/s) : 651 Maximum ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
-
Characterization of clays from Slatina (Ub, Serbia) for potential uses in the ceramic industry
Milošević M., Logar M., Kaluđerović L., Jelić I.. "Characterization of clays from Slatina (Ub, Serbia) for potential uses in the ceramic industry" in Energy Procedia Energy Procedia 125, :Elsevier (2017): 650-655. https://doi.org/10.1016/j.egypro.2017.08.270
-
Development of an Integrated Model for Open-Pit-Mine Discontinuous Haulage System Optimization
Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević, Dejan Stevanović (2024)The selection of the optimal equipment for discontinuous haulage systems is one of the most important decisions that need to be made when an open-pit mine is designed. There are a number of influencing factors, including natural (geological and environmental), technical, economic, and social. Some of them can be expressed numerically, in certain units of measure, while others are descriptive and can be stated by linguistic variables depending on the circumstances of the project. These factors are characterized by ...Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević, Dejan Stevanović. "Development of an Integrated Model for Open-Pit-Mine Discontinuous Haulage System Optimization" in Sustainability, MDPI (2024). https://doi.org/doi.org/10.3390/su16083156
-
Development of an integrated model for open-pit-mine discontinuous haulage system optimization
Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović . "Development of an integrated model for open-pit-mine discontinuous haulage system optimization" in Sustainability, MDPI (2024). https://doi.org/10.3390/su16083156
-
Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
... at 455000 m 3 strated to flow in two day period (Krušić et al., 2018).The position and area of debris flow was determined by remote sensing technique (Đurić et al., 2017) and confirmed and analyzed in detail by field work. Debris flow stretched 1.5 km with a width of more than 350 m (Figure 1/a) ...
... with the main scarp height at 30 m as its deepest part (Figure 1/b). The the main scarp zone is mainly is composed of weathered material that consists of limestone, sandstone and diabase, with fragments of heterogeneous material that range from cm 3 up to some m 3 in volume (Krušić et al., 2017; ...
... profile was positioned above the main scarp (Figure 1/c) on the relatively flattened area, with visible cracks. The profile was 295 m long, with electrode spacing of 5 m. We have used Wenner array for data acquisition. To obtain an electrical resistivity tomography, the apparent resistivity values ...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
-
Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela
Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić. "Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela" in Vodoprivreda 42 no. 04-Jun, Beograd : Jugoslovensko društvo za odvodnjavanje i navodnjavanje (2010): 223-235
-
Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
-
Приказ резултата истраживања рудне жице 43 на хоризонту -100 рудника ''Леце''
Цветковић Марко (2024)Лежиште олова и цинка са пратећим златом и сребром интезивно се експлоатише од 1953. године. Експлоатација се промењивим интезитетом одвијала до 2001. године, када престаје због организационо-финансијских проблема. После приватизације рудника Концерн ''Фармаком-МБ'' из Шапца постаје власник рудника и покреће низ активности на санирању стања и обнављању производње. Од 2010. године поново почиње интезивна експлоатација и прерада руде. Повод за анализу и разраду теме ''Приказ резултата истраживаља рудне жице не хоризонту -100 у руднику Леце'' јесте израда овог завршног ...... TepeHHM ca HajMaR5OM HaJIMOpCKOM BHCHHOM Cy y3 peky JaOmanumy (350 m), anma je Beha Jeo TepeHa ca HaJIMODpCKOM BHCHHOM 400—1200 m. Behu BpxoBH cy Majnag nnaHuHHa (1052 m), PaBHa nnaHuHa (1194 m), Bpajnropcku Buc (957 m), PacopBaua (927 m) u np. /lyOoko yceucHu noTonu H peaTHBHO /(00pa HOTHIyMJbeEHOCT ...
... e(beKaTa. 29 5 JIHTEPATYPA 1. JosanoGduh M.,Komeauh C. Iaanosuh 3, Bopbeeuh M., 1965: EnaGopar o H3BpnIeHHM HCTpa;KHHM pajlOBHMa Ha JICIIKOM AHJIC3HTCKOM aMCHBy y TOKy 1964. roj. ODC/JI "TeoaaBonn"- Beorpa/jnt. 2. Josaanoauh M., Bykanoseuh M., Tonanosuh C., 1966: ToOuwmbu u3eewmaj o u3 ...
... XOJIHHKA Cy napuipanm ol 6 m? no 9 m”. IIpeunH XOJUHHIUH Cy HMaJIH Iy)KHHy Koja je BapHpajtla OJL HČKOJIHKO MeTAPa JIO HCKOJIHKO JIČCeTHHa MeTapa y 3aBHCHOCTH 0OJI pa3jlaJbHHe CMCpHOT XOJIHHKa H py}IHOr Tena H Je0JbHHe pyzyiHor Tena. IIpobana npeunix xojnHka cy BapnHpanu oJ 4-5 m?. Mspana HcrpaxKHMXx ...Цветковић Марко. Приказ резултата истраживања рудне жице 43 на хоризонту -100 рудника ''Леце'', 2024
-
Стање квалитета амбијенталног ваздуха на подручју града Београда
Марко Колачарић (2024)У овом раду анализирано је стање квалитета амбијенталног ваздуха на територији града Београда. Анализа се заснива на праћењу података о загађујућим материјама прикупљеним у 2022. години са шест мерних места на територији града. Загађивачи који су обухваћени овом радом су сумпор-диоксид (SO2), азот-диоксид (NO2), честични загађивачи (PM2.5 и PM10), тропосферски озон (О3) и угљен-моноксид (СО). На основу добијених резултата предложене су мере за побољшање тренутног система. Констатовано је прекорачење законских граница на свим мерним местима, за једну или више ...... KaJIeHJapcke ronuHe. Ha Cuaka 12 MO)KE CeC BHJIČTH pa3JiHKa y KBapTaJIHHM CpeJUbHM KOHIIeCHTpalHijaMa . 40 m Crapu rpan M HoBM Beorpan m Mocrap m Bpauap m 3eneHo 6pno m O6peHoBaLu ueHTap Qtr1 Qtr2 Qtr3 Qtr4 35 30 25 10 [21 2022 Cauka 12 Tpaquuku npuka3 cpeotbux keapmaniux ...
... Cy H3MepeHe Ha cJIerehHM MepHHM MecTHMa: • Crapu rpaj y MapTry (55.49 ug/m?) • Hopnu Beorpan y Mapry (52,10 ag/m?) • Mocrap y apry (54,83 ng/m*) • OGpeHoBam ueHrap y janyapy (56,31 Hg/m?), peOpyapy (53,97 Hg/m?) H Mapry (72,43 ng/m3) OBaKBH pe3ynTaTH yKa3yjy Ha JaCHy pa3JMKy y KBaHHTeTy ...
... mamaBHHa BapHpa TOKOM TOJMHHC, Ca CpeJUĐOM TOJUIHTH5OM KOJIHUHHOM OJI 675,3 I/m?. HajBame nanaBuHHa je 3aOemexxeHo y Majy (73,1 1/m?), a RajMampe y QeOpyapy (39,8 1/m?). Hajneha nHeBHa kojmiuuHa najlaBHHa on 109,8 I/m? Jje aaOemexxeHa 15. Maja 2014. roxanHe. CpenmH Opoj naHa ca nanaBHHaMa Je 138 ...Марко Колачарић . Стање квалитета амбијенталног ваздуха на подручју града Београда, 2024
-
Fe doped TiO2 prepared by microwave-assisted hydrothermal process for removal of As(III) and As(V) from water
Anđelković Ivan B, Stanković Dalibor M, Nešić Jelena, Krstić Jugoslav B, Vulić Predrag, Manojlović Dragan D, Roglić Goran M (2014)Anđelković Ivan B, Stanković Dalibor M, Nešić Jelena, Krstić Jugoslav B, Vulić Predrag, Manojlović Dragan D, Roglić Goran M. "Fe doped TiO2 prepared by microwave-assisted hydrothermal process for removal of As(III) and As(V) from water" in Industrial and Engineering Chemistry Research 53 no. 27, Washington:American Chemical Society (2014): 10841-10848. https://doi.org/10.1021/ie500849r
-
Ca-rich carbonates associated to ultrabasic-ultramafic melts: carbonatite remnants or limestone xenoliths? A case study from the late Miocene Morron de Villamayor volcano (Calatrava volcanic field, central Spain).
Lustrino, M., Prelević, D., Agostini, S., Gaeta, M., Di Rocco, T., Capizzi, L. S.. "Ca-rich carbonates associated to ultrabasic-ultramafic melts: carbonatite remnants or limestone xenoliths? A case study from the late Miocene Morron de Villamayor volcano (Calatrava volcanic field, central Spain)." in Geochimica et Cosmochimica Acta 185, :Pergamon (2016): 477-497. https://doi.org/10.1016/j.gca.2016.02.026
-
Uslovi formiranja oticaja reke Crnice
Andjelija Glogovac (2024)Sliv reke Crnice zauzima područje centralnog dela Srbije, između opštine Paraćin na zapadu, Sisevačkog basena na istoku, sliva Ravanice na severu i Jovaničke reke na jugu.Režimski parametri sliva reke,površine od 289 km2 kontrolišu se na hidrološkoj stanici Paraćin, dok su sa ciljem analize režima i uticaja padavina na formiranje oticaja preuzeti podaci o padavinama sa meteorološke stanice Ćuprija.Na razmatranom području dominantnu ulogu ima karsni tip izdani, koga karakteriše nestabilan režim u u pogledu oscilacija izdašnosti i nivoa podzemnih voda ...... proticajem koji je iznosio 30,20 m“/s. Na dijagramu unutar godišnje raspodele (slika 3.4.) najveće vrednosti proticaja javljaju se u u aprilu (7.62m*/s) i martu (7.43 m?/s). U proseku, najsušniji meseci su septembar (1.23 m?/s), oktobar (1.25 m”/s) i avgust (1.49 m?*/s). 17 Slika 3.2. Podomerna ...
... (m m) Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec. 2010. 2010. 2010. 2010. 2010. 2010. 2010. 2010. 2010. 2010. 2010. 2010. m — s Padavine - Ćuprija v.s. Paraćin Slika 7.14. Hidrogram proticaja sa padavinama, 2010. godina Pr ot ic aj Q (m ?/ s) Pa da vi ne (m m) ...
... pomenute Jednačine. 64 10. LITERATURA 1. Antonijević I., Veselinović M., Đorđević M., Kalenić M., Krstić B. i Žagubica L 34-140, Savezni geološki zavod, Beograd. 2. Dolić D., Kalenić M., Marković B., Dimitrijević- M., Radoičić R. i Lončarević Č. (1978). Osnovna geološka karta 1:100 000, Tumač ...Andjelija Glogovac. Uslovi formiranja oticaja reke Crnice, 2024
-
Utvrđivanje Bondovog radnog indeksa Pb-Cu-Zn rude rudnika Rudnik
Jovana Jović (2024)Završni rad sa temom ,,Utvrđivanje Bondovog radnog indeksa Pb-Cu-Zn rude rudnika Rudnik” sastoji se iz opšteg i specijalnog dela. OPŠTI DEO sadrži: U opštem delu dato je: Uvod, Geografski položaj i istorijski razvoj rudnika "Rudnik", kratak prikaz geologije ležišta i eksploatacije rude kao i opis tehnološkog procesa flotacije rudnika “Rudnik”. SPECIJALNI DEO sadrži:U specijalnom delu dato je:Cilj istraživanja, teorijske osnove usitnjavanja, Bondov radni indeks, metode ispitivanja uzoraka, uzorkovanje i obrada uzorka; Metode ispitivanja; Rezultati ispitivanja po standardnom Bondovom postupku i po ...Bondov radni indeks, standardni postupak, skraćeni postupak, ruda olova, bakra i cinka, rudnik „Rudnik“... Prečnik kondicionera Pb ıi Cu koji se nalaze u pogonu flotacije rudnika "Rudnik" iznosi D = 3,0 m, a njihova visina je H = 3,0 m. Prečnik kondicionera Zn u ovom pogonu Je D = 2,5 m i njegova visina Je H = 2,5 m. 2.4.3.2 Flotacijska koncentracija Sam proces flotacijske koncentracije obuhvata pet faza: ...
... (Nx), prema formuli: n k, = N—hl[R1 + (M – R,)X| – InR» 2 11. Odsevu (R>)iz prvog eksperimenta dodati sveži uzorak mase (M — R). 12. Izračunati broj obrtaja za treći eksperiment mlevenja (Nx), prema formuli: 2,5 In[R, + (M – &,)X| — 1113'5 k M N.=n , [obrtaja| 13. Ovako pripremljeni ...
... kapaciteta trake od Q = 130 t/h, kao i velike brzine kojom se traka kreće v = 1,7 m/s. Dužina nošenja trake je L = 49,79 m, širina B = 650 mm, a ugao nagiba transportera je a = 17* 03'. Visina dizanja trake Je H = 14,60 m, pri čemu traku pokreće elektromotor snage P = 18, 5 kW. Slika 3. Transportna ...Jovana Jović. Utvrđivanje Bondovog radnog indeksa Pb-Cu-Zn rude rudnika Rudnik, 2024
-
Phase relations and physical indicators of municipal waste from old landfills in Serbia
Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science... Unit Relations Unit weight Y kN/m) Y=W/V=(I+w) ·Ya Void ratio e mš/m* e= V /V, = | ___I-n Unit weight W a of solid A kN/m* E i ——— particles Vs 1-n 'Volume water v m*/m* v= V Zw.J0 content -% V Yw Volume gas a m*/m* a _&_ n_w content -% a Saturation g m*/m* S =&=X degree ii -% ii Vp ...
... taken was 1.0 – 12.0 m), values ranged in a wide interval of y = 9.5 — 17.6 108 kN/m, It can be seen that the values are in the domain of possible values of waste unit weight that correspond medium to well compacted waste (Figure 6). unit weighty (kN/n») unit weight y (KN/m*) 15 20 5 0+ E ...
... Ikodinović, Jovana M Janković, Tina D Đurić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Phase relations and physical indicators of municipal waste from old landfills in Serbia | Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić ...Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić. "Phase relations and physical indicators of municipal waste from old landfills in Serbia" in Japanese Geotechnical Society Special Publication, The Japanese Geotechnical Society (2021). https://doi.org/10.3208/jgssp.v09.cpeg016
-
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)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
-
The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)
Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov. "The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)" in Water, MDPI AG (2019). https://doi.org/10.3390/w11030603