Претрага

Упит dcterms_creator_txt:Vesna V. Lazendić

1178 items

  • Analiza uporednog praćenja temperature površine ohlađenih materijala pri njihovom zagrevanju do ambijentalne temperature

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Katarina Nestorović (2021)
    U datom eksperimentalnom radu su termografskim metodama ispitivane termofizičke karakteristike različitih materijala. Za ispitivanja su izabrani mesingani niovčić, ugalj i pelet, jer imaju različita termoizolaciona svojstava i različito stanje površine. Uzorci su najpre hlađeni, a zatim je njihovo zagrevanje na sobnoj temperaturi praćeno termalnom kamerom. U drugom delu eksperimenta, korišćena je impulsna termografija, a zagrevanje površine uzoraka vršeno je svetlosnom pobudom.
    termografija, impulsna termografija, nedestruktivno testiranje materijala, mesing, ugalj, pelet

  • Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)

    Vesna Cvetkov, Filip Arnaut, Dragana Životić (2024)

  • Investigation of Co0.9Ho0.1MoO4 Nanopowders Obtained by Glycine Nitrate Procedure

    Milena Rosić, Maja Milošević, Maria Čebela, Vladimir Dodevski, Vesna Lojpur, Radomir Ljupković, Aleksandra Zarubica (2023)
    ... Investigation of Co0.9Ho0.1MoO4 Nanopowders Obtained by Glycine Nitrate Procedure Milena Rosić, Maja Milošević, Maria Čebela, Vladimir Dodevski, Vesna Lojpur, Radomir Ljupković, Aleksandra Zarubica Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Investigation ...
    ... Investigation of Co0.9Ho0.1MoO4 Nanopowders Obtained by Glycine Nitrate Procedure | Milena Rosić, Maja Milošević, Maria Čebela, Vladimir Dodevski, Vesna Lojpur, Radomir Ljupković, Aleksandra Zarubica | Book of Abstracts / 26th Congress of SCTM with international participation, 20-23 September 2023, Ohrid, R ...
    ... University (NYU) Abu Dhabi Prof. Dr. Radmila Tomovska, POLYMAT Institute, University of the Basque Country, San Sebastian, Spain Prof. Dr. Vesna Rafajlovska, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, R. N. Macedonia Prof. Dr. Emilija Fidančevski, ...

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Saša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac (2013)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Mogućnost infracrvene termografije pri detekciji štetnih gasova

    Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković (2021)
    Curenje pojedinih gasova je opasnost koja može da izazove velike nezgode. Često je praćeno požarima i eksplozijama koji za posledicu mogu da imaju kako ljudske povrede, tako i štetan uticaj na ekologiju i ekonomiju. Da bi se izbegle takve situacije, preventivna inspekcija je od presudne važnosti. Curenje većine gasova se ne može uočiti golim okom a za otkrivanje i procenu stepena curenja može se koristiti tehnologija toplotnog snimanja (infracrvena termografija). U datom radu predstavljene su mogućnosti i ograničenja primene ...
    IC termografija, curenje gasa, termogram

  • 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 (2017)

  • Available technological procedures for capturing CO2 in the industrial and power generation sectors

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2021)
    Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...
    capturing CO2, power plants, CO2 capture systems, CO2 technologies
    ... Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Available technological procedures for capturing CO2 in the industrial and power generation sectors | Lola Tomić, Vesna Karović ...
    ... September 2021, Serbia AVAILABLE TECHNOLOGICAL PROCEDURES FOR CAPTURING CO2 IN THE INDUSTRIAL AND POWER GENERATION SECTORS Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac University of Belgrade – Faculty of Mining and Geology, Belgrade, SERBIA, lola ...
    ... core.windows.net/assets/d0031107-401d-4a2f-a48b- 9eed19457335/GlobalEnergyReview2021.pdf (accessed on 15 July 2021). 2. Tomić, L.; Karović-Maričić, V.; Danilović, D.; & Crnogorac, M. Criteria for CO2 storage in geological formations. Podzemni radovi 2018, 32, 61-74, doi: 10.5937/PodRad1832061T. Available ...

  • Optimizacija vodosnabdevanja podzemnim vodama u Srbiji

    Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)
    ... Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Optimizacija vodosnabdevanja podzemnim vodama u Srbiji | Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac ...
    ... OPTIMIZACIJA VODOSNABDEVANJA PODZEMNIM VODAMA U SRBIJI OPTIMIZATION OF GROUNDWATER SUPPLY IN SERBIA Dušan 1, Zoran 1, Petar 1, Vesna Vakanjac1, Bojan 1, Saša 1, Dragoljub 1 1 Departman za hidrogeologiju, Rudarsko-Geološki fakultet, Univerzitet u Beogradu, 7, Beograd, dupol2@gmail ...
    ... OPTIMIZACIJA VODOSNABDEVANJA PODZEMNIM VODAMA U SRBIJI OPTIMIZATION OF GROUNDWATER SUPPLY IN SERBIA Dugan Poloméic’, Zoran Stevanovié', Petar Dokmanovié', Vesna Ristié Vakanjac’, Bojan Hajdin’, SaSa Milanovic', Dragoljub Baji¢' 'Departman za hidrogeologiju, Rudarsko-Geoloski fakultet, Univerzitet u Beogradu ...

  • Грешка инклинације код депозиционе реманетне магнетизације

    Mirko Petković, Vesna Cvetkov (2019)
    ... код депозиционе реманетне магнетизације Mirko Petković, Vesna Cvetkov Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Грешка инклинације код депозиционе реманетне магнетизације | Mirko Petković, Vesna Cvetkov | II Когрес геолога Босне и Херцеговине са међународним ...
    ... DEPOSITIONAL REMANENT MAGNETIZATION Mast. inž. geol. Mirko Petković, Prof. dr Vesna Cvetkov Mast. inž. geol. Mirko Petković, Rudarsko-geološki fakultet, Univerzitet u Beogradu (mirkopetkovic.90@gmail.com) Prof. dr Vesna Cvetkov, Rudarsko-geološki fakultet, Univerzitet u Beogradu (vesna.cvetkov@rgf ...
    ... II KONGRES GEOLOGA BOSNE I HERCEGOVINE SA MEĐUNARODNIM UČEŠĆEM II КОНГРЕС ГЕОЛОГА БОСНЕ И ХЕРЦЕГОВИНЕ СА МЕЂУНАРОДНИМ УЧЕШЋЕМ 317 Mg, Mn, Al, V i Ti koje mu mijenjaju svojstva (Kirijevu temperaturu, magnetsku susceptibilnost, vrednost sturacione magnetizacijem, itd.). Hematit (Fe2O3) pripada ...

  • Optimising in electrical energy consumption in mining plants

    Snežana Aleksandrović, Vesna Damnjanović, Ilija Jeftenić (2018)

  • Distribution of Potentially Toxic Elements in the City of Zintan and Its Surroundings (Northwestern Libya) by Surface Soil Sampling

    Boris Vakanjac, Zorana Naunović, Vesna Ristić Vakanjac, Tanita Đumić, Saša Bakrač, Jana Štrbački, Vuk Gajić, Taher Mohamed Alzarog (2023)
    The study area is the city of Zintan, in northwestern Libya, which has grown over the past 30 years. Its current population is roughly 30,000. Although the city is in part commercial, most of the population engages in agriculture and primarily grows cereal crops (wheat and barley). The demand of the growing city for agricultural products has increased, intensifying the use of fertilizers, pesticides, and insecticides. Consequently, concentrations of potentially toxic elements (PTE) in the soil have increased. To ...
    Geologija, Geotehničko inženjerstvo, Inženjerska geologija

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Стратиграфија Горње креде источно од Поћуте (северозападна Србија) Стратиграфија А. Грубић Н. Бањац, Ј. Јанкичевић, Д. Рабреновић 151. Лазендић В. Весна 27.12.2002. Палеомагнетне карактеристике млађег палеозоика Јадранског блока (СЗ Србија) Геомагнетизам М. Старчевић А. Ђорђевић, Б ...
    ... Ж. Секулић 145. Триван В. Јелена 05.04.2013. Компаративна анализа стабилности косина и њихова санација на примеру површинског копа угља "Ботутово село" - Угљевик, РС Механика стена Н. Гојковић Б. Колоња, В. Чебашек, В. Малбашић 146. Јовичић Љ. Весна 28.06.2013. Управљање ...
    ... Површинска експлоатација ЛМС В. Павловић Н. Лилић, Л. Кричак 147. Јагодић - Крунић Д. Весна 07.07.2014. Оптимизација организације процеса површинске експлоатације Површинска експлоатација ЛМС Л. Кричак Ч. Бељић, В. Павловић 148. Фигун В. Љубица 25.07.2014. Зонирање ...

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... responsible for any use which may be made of the information contained herein. И З В О Д ТРЕНУТНА ЗАГАЂЕНОСТ ДУНАВА И САВЕ КОД БЕОГРАДА (2013. Г.) МИЛАН Д. АНТОНИЈЕВИЋ 1 , МАРИЈА АРСОВИЋ 2 , JOSEF ČÁSLAVSKÝ 3 , ВЕСНА ЦВЕТКОВИЋ4, ПРЕДРАГ ДАБИЋ 4 , MLADEN FRANKO 5 , ГОРДАНА ИЛИЋ 6 , МИЛЕНА ИВАНОВИЋ ...
    ... Измењено: 2023-10-14 04:10:08 Actual contamination of the Danube and Sava rivers at Belgrade (2013) Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica ...
    ... у Београду [ДР РГФ] Actual contamination of the Danube and Sava rivers at Belgrade (2013) | Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica ...

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... registered rock mass oscillation velocities v, is given, as well as calculated rock mass oscillation velocities from v,, to v,s , for models 1 — 5. Table 3. Review of registered and calculated rock mass oscillation velocities for models 1-5 V, [cm/s| a [cm/s V;s [cm/s] 21.8117 55.3430 55.9536 ...
    ... component, • V, — rock mass oscillation velocity vertical component, • Y, — rock mass oscillation velocity horizontal longitudinal component. Based on that, maximum, i.e., resulting rock mass oscillation velocity V, can be determined using following equation: 2 2 2 V,OS NM +V TV 3 Q) 3. ROCK ...
    ... explosive Q , calculated values of reduced distances R., registered values of rock mass oscillation velocities per components V,, V,, V, and resulted rock mass oscillation velocities v, for blasting I — I, at the total of ten measured points MP, are presented in Table 2. 200 Table 2. Review of blasting ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... ˆT i b V T i V b S i b V b S i V(S ; ) ( ; )/ , (S ; ) ( ; ), (4)b x b x x th th th 1 th hold for the duration T(i; Vth) and size ∫= ′ ′ −S i V f t dt V T i V( ; ) ( ) ( ; ) t t ith th th s e , and also for the following types of waiting times: = = = ˆ ˆ ˆ T i b V T i V b T i b V T i V ...
    ... =ζ ζ+ − + −D T b b V b b D T V D b S b V b b D S V( / ; , ) ( ; , ), ( ; , ) ( ; , ), (13)T x w T S x x w x Sth 1 th 1 th 1 th λ λ=ζ +D T b b V b b D T V( / ; , ) ( ; , ), (14)T x w Tint th 1 int thint int λ λ λ λ = = . ζ ζ + + D T b b V b b D T V D T b b V b b D T V ( / ; , ) ( ; , ...
    ... )i T( ) int th int , n T V( ; )i T( ) end th end , and n T V( ; )i T( ) ini th ini corresponding to internal waiting time Tint, and contributions Tend and Tini to the external waiting time, respectively. �ese numbers obey: = =− ˆ ˆn T b b V n T V n b S b V n S V( / ; ) ( ; ), ( ; ) ( ; ), (8)i ...

  • Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine

    Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina (2015)
    ... operation of relation (10) we obtain: 1 21 1 2 1 ... log log ... N N N N v v vR n R R R v                where we find: 1 2 1 1 1 2 ... log log ... N N N N v v v v n R R R R                (11) By the replacement ...
    ... R1, i = 2, 3, ..., N, from the equation (9), we can take that: 1 1 2,3,..., n i i R v v i N R         from where the relation is obtained: 1 1 2 1 1 2 ... ... n N N N N R v v v v R R R             (10) From the relation (10), we can determine ...
    ... have approximately the same value (Lutovac, 2010) which will be marked (-n), meaning that: v v n R R     (2) Thereby it can be considered that: 0 lim R v v n R R       which means that is: 12 ...

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... 1%, the oscillation velocity of the soil v will decrease (increase) by approximately n% [8]. Indeed, for h = ± R 100 = ±1%R, from (12) we obtain: v ( R ± R 100 ) ≈ v(R)∓ n· R 100 · v(R) R , v ( R ± R 100 ) ≈ v(R)∓ n· v(R) 100 , v(R ± 1%R) ≈ v(R)∓ n%·v(R). (14) 3.3. Models to Determine the ...
    ... applied to the function v(R) from (7), in the final growth increment, we obtain: v(R + h) ≈ v(R) + h·v′(R + θ·h), 0 < θ < 1. (11) For small absolute values h, from (11), we obtain the relation: v(R + h) ≈ v(R) + h·v′(R). (12) Having (10) in mind, relation (12) becomes: v(R + h) ≈ v(R)− n·h·v(R) R . (13) ...
    ... written in the form: v(R) = K-R™. (7) Then from the Equation (7) for the derivation v’(R), we obtain: o'(R) = —n-K-R-"1, (8) Minerals 2018, 8, 70 5 of 18 which may be written in the form: v′(R) = − n R ·K·R−n. (9) Having in mind Equation (7), from the Equation (9), we obtain: v′(R) = −n·v(R) R ...

  • Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit

    Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić (2015)
    ... values v(Rs), v(R1), Rs and R1 we take from the table of experimental data, so that we have: c s s Rv v 1 1 R-R v- . (12) In this manner we find a derivative v'(Rc) at point Rc, whereas Rc is given using formula (11). In practice the formula (8) is used so that the values v(Rs) and v(R1) ...
    ... formuli (8) vrednosti v(Rs), v(R1), Rs i R1 uzimamo iz tabele eksperimentalnih podataka, tako da imamo: c s s Rv v 1 1 R-R v- . (12) Na ovaj način nalazimo izvod v'(Rc) u tački Rc, gde je Rc dato pomoću formule (11). U praksi formulu (8) koristimo tako što vrednosti v(Rs) i v(R1) uzimamo iz ...
    ... i.e. n RK R n v . (5) Bearing in mind (4), equation (5) is re- duced to: R vn v (6) From (6) the following is found: v R vn (7) If the derivative v' at some point Rc could not be found then from the equation (7), n can be determined. Value of deriva- tive v' can be determined using ...

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... platelet, estimated as 25.47% for V and 74.53% for O, are close to the values of stoichiometric V5»Os. Molecules 2023, 28, 655 5of18 Spectrum 1 V A o A |A o 1 2a 3 4 5 6 7/ B 0 10 Full Scale 4432 cts Cursor:-0.124 KeV (0 cts) keV v Spectrum 2 V o V r - ——— e O 1 2 3 4 5 6 7 8 9 ...
    ... good crystallinity of the V>»Os phase [30—32]. A broad feature at ~1020 cm !1 may be ascribed to surface VOx species on V>Os [33]. R a m a n in te ns it y 100 200 300 400 500 600 700 800 900 1000 1100 1200 Raman shift (cm) Figure 5. Experimental Raman spectrum of V»Os catalyst (after a baseline ...
    ... was used to prepare V»Os powders [14,48]. For that purpose, 0.1 M ammonium metavanadate (NHaVOx) was dissolved in 80 mL of distilled water, resulting, in a pale yellow solution. To adjust the pH of the reaction solution to about 4, the diluted acetic acid (C(HaCOOH/Hx»O = 1:1 v/v) was added drop-wise ...