Претрага
1061 items
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Improving efficiency of thermal power plants through mine coal quality planning and control
Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...... the property of two slices, s and s′, at mutual distance k, is [13]: , db j ji i j ci a s sb d i j i a j c x vx v y y v v == ′ = = ′′ = = ∑∑ ∑ ∑ (7) where ys is the output property in slice s, s ∈{1, 2, …, m}, ys′ – the output property in slice s′, s′ ∈{k + 1, …, m}, vi, vj – the ...
... n of layer number i,j in slice s, s′, i,j ∈{1, 2, …, n}, xi′, xj′ – the input property in layer number i,j intersected by slice s, s′, a, b – the first and last layer intersected by slice s, a, b ∈{1, 2, …, n}, c, d – the first and last layer intersect- ed by slice s′, c, d ∈{1, 2, …, n}, b – a + 1 ...
... Improving Efficiency of Thermal Power Plants through … 726 THERMAL SCIENCE: Year 2018, Vol. 22, No. 1B, pp. 721-733 1 1 allowed 1 ... ... n n n S Q S Q S Q Q + + ≤ + + (6) Stockpile homogenization modelling To meet the narrow quality specification required by a TPP, real-ti-me logistic al- lows ...Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja. "Improving efficiency of thermal power plants through mine coal quality planning and control" in Thermal Science, Vinča Institute of Nuclear Sciences (2018). https://doi.org/10.2298/TSCI170605209B
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Investigation of the microbial diversity of an extremely acidic, metal-rich water body (Lake Robule, Bor, Serbia)
Stanković S., Morić I. R., Pavić A.B., Vasiljević B.Z., Johnson D.B., Cvetković Vladica. "Investigation of the microbial diversity of an extremely acidic, metal-rich water body (Lake Robule, Bor, Serbia)" in Journal of the Serbian Chemical Society 79 no. 6, Beograd, Serbia:Serbian Chemical Society (2014): 729-741. https://doi.org/10.2298/JSC130605071S
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Application of contour blasting in reducing the negative effects of blasting during opening the dimension stone deposits
Kričak Lazar, Janković Ivan, Negovanović Milanka, Zeković Dario, Mitrović S.. "Application of contour blasting in reducing the negative effects of blasting during opening the dimension stone deposits" in Proceedings of the 3rd International Conference „Harmony of nature and spirituality in stone“, Kragujevac, Serbia:Stone Studio Association (2013): 87-92
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Calculative image analysis of oxidation induced food colour changes
L. Pezo, M. Pavlović, S. Ostojić, Kovačević Olgica, Zlatanović Snežana, Ilić Marija, Gvozdenović Jasna (2010)L. Pezo, M. Pavlović, S. Ostojić, Kovačević Olgica, Zlatanović Snežana, Ilić Marija, Gvozdenović Jasna. "Calculative image analysis of oxidation induced food colour changes" in Rizici i eko -bezbednost u postmodernom ambijentu -Internacionalna konferencija, septembar 19-12 jun, Novi Pazar, Novi Pazar:Državni univerzitet u Novom Pazaru (DUNP) (2010): 125-131
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Impact of modern technological equipment at improvement of technological and economical indicators in lead and zinc flotation plant “Kopaonik” – Leposavic, RMHK “Trepca” – Serbia
Lazić Predrag, Mališić Z., Vidosavljević S., Ivanović M., Antonijević D.. "Impact of modern technological equipment at improvement of technological and economical indicators in lead and zinc flotation plant “Kopaonik” – Leposavic, RMHK “Trepca” – Serbia" in Proceedings of the XV Balkan Mineral Processing Congress, Sozopol: (2013): 648-651
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Numerical Modeling and Computer Simulation of Ground Movement Above Underground Mine
Nurić A., Nurić S., Kričak Lazar, Lapadić I. Husanagić R.. "Numerical Modeling and Computer Simulation of Ground Movement Above Underground Mine" in World Academy of Science, Engineering and Technology, International Science Index 69 (2012) 6 no. 9, :World Academy of Science, Engineering and Technology (2012): 361-370
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Modelling of characteristics of crater emerged from the surface explosion on the soil
Bjelovuk I., Jaramaz S., Elek P., Mickovic D., Kričak Lazar. "Modelling of characteristics of crater emerged from the surface explosion on the soil" in FIZIKA GORENIYA I VZRYVA, (COMBUSTION, EXPLOSION, AND SHOCK WAVES) no. 3, Novosibirsk, Rusija:Publishing House of the Siberian Branch of the Russian Academy of Sciences , Springer (2015): Prihvaćen
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Sensitive Determination of Copper on New Modified Glassy Carbon Paste Electrode
Škrivanj Sandra, Stanković M. Dalibor, Khan Muslim, Nikolić S. Aleksandar, Vulić Predrag, Manojlović D. Dragan (2015)Škrivanj Sandra, Stanković M. Dalibor, Khan Muslim, Nikolić S. Aleksandar, Vulić Predrag, Manojlović D. Dragan. "Sensitive Determination of Copper on New Modified Glassy Carbon Paste Electrode" in Analytical & Bioanalytical Electrochemistry 2 no. 7 (2015): 230-241
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Application of pulsed flash thermography method for specific defect estimation in aluminum
Tomić Ljubiša D, Jovanović Dalibor B, Karkalić Radovan M, Damnjanović Vesna, Kovačević Branko V, Filipović Dalibor D, Radaković Sonja S. (2015)Tomić Ljubiša D, Jovanović Dalibor B, Karkalić Radovan M, Damnjanović Vesna, Kovačević Branko V, Filipović Dalibor D, Radaković Sonja S.. "Application of pulsed flash thermography method for specific defect estimation in aluminum" in Thermal Science 19 no. 5, Belgrade:Vinca Institute of Nuclear Sciences (2015): 1845-1854
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Assesment of geological and geotechnical conditions for rebuilding Avala`s television tower
Ćorić Slobodan, Rakić Dragoslav, Hadži-Niković Gordana, Janković Tomislav, Filipović Vladimir, Marjanović Biljana (2013)Ćorić Slobodan, Rakić Dragoslav, Hadži-Niković Gordana, Janković Tomislav, Filipović Vladimir, Marjanović Biljana. "Assesment of geological and geotechnical conditions for rebuilding Avala`s television tower" in Geotechnical Engineering for the Preservation of Monuments and Historic Sites, Napoli, Italy:CRC Press, Taylor & Francis Group (2013): 273-278. https://doi.org/10.1201/b14895-32
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The significance of crater for determining explosion cause in forensic engineering
Bjelovuk I., Jarmaz S., Kričak Lazar. "The significance of crater for determining explosion cause in forensic engineering" in Thematic Proceedings of International Significance ARCHIBALD REISS DAYS, Beograd,Srbija:Academy of Criminalistic and Police Studies (2012): 913-929
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Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas
Zhang, L.-Y., Prelević Dejan, Li, N., Mertz-Kraus, R., Buhre, S.. "Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas" in Lithos 262 (2016): 153-168. https://doi.org/https://doi.org/10.1016/j.lith
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Старење бунара у алувијалним срединама различитог степена оксичности
Brankica Majkić (2013-09-27)Старење бунара настаје као последица процеса корозије и колмирања. Процесекорозије могуће је спречити уградњом филтерских конструкција од материјалаотпорних на корозију. Колмирање може да настане без обзира на врсту материјалаод кога се праве бунарске конструкције, а процесом може бити захваћенаприфилтарска зона па и зона саме водоносне средине. Из тог разлога тезa јеусмеренa на процесе који доводе до колмирања бунара и последицe опадањaкапацитета водозахватних објеката. Полазна хипотеза је да бунари стареразличитом брзином у срединама различитог степена оксичности. Хидрохемијскеи микробиолошке карактеристике подземних ...старење бунара, алувијалне издани, степен оксичности средине,колмирање, бунарски талог, локални хидраулички губитак, дозвољене улазнебрзинеBrankica Majkić. "Старење бунара у алувијалним срединама различитог степена оксичности" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-27)
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Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu. "Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08910-x
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Procena aktivnosti upravljanja održavanjem opreme za dubinsko bušenje nafte i prirodnog gasa
Iva Filipov (2024)Primarni fokus održavanja je sprečavanje zastoja u radu, koji može dovesti do značajnih finansijskih gubitaka. Redovne provere i monitoring performansi opreme omogućavaju pravovremeno otkrivanje problema i smanjenje rizika od havarija. U ovom kontekstu, korišćenje naprednih tehnologija, poput softverskih alata za upravljanje održavanjem, igra značajnu ulogu u optimizaciji procesa. Osim tehničkog održavanja, obuka osoblja o pravilnoj upotrebi opreme i sigurnosnim procedurama je od suštinskog značaja. Efikasna komunikacija između članova tima i jasne smernice za rad doprinose smanjenju rizika i povećanju produktivnosti. Upravljanje održavanjem takođe zahteva analizu troškova, kako bi ...... performansi opreme i planiranje preventivnog održavanja. Osim toga, procena aktivnosti mora obuhvatiti i analizu sigurnosnih procedura, s obzirom na visoke rizike povezane s bušenjem. Uspostavljanje jasnih smernica i obuka zaposlenih za situacije vanrednih stanja može umanjiti mogućnost nesreća. Na ...
... (1) 10 _ . ' . • . . ( . ~ - > _ , , x ~ a e uay==enuII_L_AALAALJAAL_ALALJAN– ~ | _ S o m a v v v v v u k k z u n I N n u u u ž N NNNNNNNA / s „ , : Š Slika 3 Uprošćena šema bušaće garniture 11 3. PROCES ODRŽAVANJA OPREME ZA DUBINSKO BUŠENJE ...
... ı 10% od ukupnog operativnog osoblja. Međutim, u savremenim uslovima, s obzirom na proporcionalnu veličinu održavanja u odnosu na operativne grupe u procesu proizvodnje, broj zaposlenih u održavanju značajno Jje porastao, s tendencijom daljeg povećanja. Primarni uzrok ovog trenda leži u opštoj ...Iva Filipov . Procena aktivnosti upravljanja održavanjem opreme za dubinsko bušenje nafte i prirodnog gasa, 2024
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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 ...... -poprečni presek -geotehnički presek tereng O7NAKE ISTRAŽNIH RADOVA s S Ps 3 s s > Fa = FE3 TEPEH = Fai Rič a H a Š Fa F| -i PLIN == |r š RR F ii IN š F s FH 1_9 OMO Š Š Pg š 8 8 Š Š [ s Š Š 88 . : . E P gRp EJ a a s d R š s *s9š# (361.4) Inženjerskogeološki presjek 0+800 —oznka za istrožnu ...
... Garnitura: Tip bušenja: x: 7581242.8 y:4714373.6 z:368.75 20.0 04.11.2022. 1:100 FRASTE rotaciono z | Š|s_|z s Grafički Š s |NPV/ i s| Š FF S ra_ IČKI Naziv, sastav i svojstva E [ š | S|Ss5|iP| prikaz litoloških članova 5 |PPV| % Ž ||j i. Prašinasta glina, tamno do svijetle braon boje, prvih 40cm ...
... y:4714810.1 z:367.1 20.0 31.10.2022. 1:100 FRASTE rotaciono FPRIFME -i Grafički i isvoj Š s |NPV/ -d s|. m |_ e P -i i Naziv, sastav i svojstva EI = .8 Š· y- Š i EI prikaz litoloških članova y- s |PPV bz s Ss|o%5|, O o v a | Š ii 1 0.0-1.7 - Prašinasta glina, tamno braon boja prvih 30cm humuzirana ...Anastasija Radovanović. Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika, 2024
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Distribution of major and trace elements in the Kovin lignite (Serbia)
Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović. "Distribution of major and trace elements in the Kovin lignite (Serbia)" in Geologia Croatica, Croatian Geological Survey (2019). https://doi.org/10.4154/gc.2019.06
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Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic
This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композицијаMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović. "Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic" in Energies, MDPI AG (2022). https://doi.org/10.3390/en15186786
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Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3
Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)... in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs R Y O U N G S C I E N T I S T S IN C E R A M I C S UEĆ čS Ć ONFE RE NJCJE LONG SCIENTISTS, IN CERAMICS 15% ECerS CONFERENCE for YOUNG SCIENTISTS in CERAMICS PROGRAMME ...
... and Book of abstracts 15th ECerS Conference for Young Scientists in Ceramics, Novi Sad, Serbia October 11-14, 2023 | 2023 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008179 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić. "Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3" in Programme and Book of abstracts 15th ECerS Conference for Young Scientists in Ceramics, Novi Sad, Serbia October 11-14, 2023 , Novi Sad : Faculty of Technology, University of Novi Sad (2023)
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Tracking of the temporal dependency of fading of the human footprint temperature contrast
In certain situations, it is extremely important to determine the exact time “someone” entered or crossed the forbidden zone of a military or strategic installation, a red zone of radioactive, chemical, or biological contamination, a bank or similar structure. Standard security measures include ordinary video surveillance using cameras that operate in the visible range of the electromagnetic spectrum, as well commercial thermal imaging cameras [1, 2]. The paper presents the results of experiments that suggest another possible use of ...... intruder invaded the forbidden zone”. Figure 1. Thermal image of footprint on carpet: Left 1 s after beginning of imaging; Right – 30 s after beginning of imaging. REFERENCES [1] S. W. Harmer, C. I. Johnson, D. Wheeler, and H. Bhabha. PIER M. 88, 83-89 (2020). [2] L. Tomić, V. D ...
... Vasiljević, Danica Pavlović | VIII International School and Conference on Photonics, Belgrade, Serbia, 23-27 August 2021 | 2021 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005572 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
... Photonica 2021 12. Other topics in photonics 183 Tracking of the temporal dependency of fading of the human footprint temperature contrast S. Djenadic1, Lj. Tomic2, V. Damnjanovic1, D. Vasiljevic3, D. Pavlovic3 1University of Belgrade, Faculty of Mining and Geology, Djusina 7, Belgrade, Serbia ...Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Darko Vasiljević, Danica Pavlović. "Tracking of the temporal dependency of fading of the human footprint temperature contrast" in VIII International School and Conference on Photonics, Belgrade, Serbia, 23-27 August 2021, Institute of Physics Belgrade (2021)