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Упит dcterms_creator_txt:Bratislav D. Iričanin

961 items

  • Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)

    Pavle Tančić, Aleksandar Kremenović, Predrag Vulić (2019)
    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 ...
    grandite, XRPD, crystal structure, structural dissymmetrization

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... Technology, Potsdam, Germany, 2009, 1, pp. 43-50 2] Petrović, D., Calculation of Underground Coal Gasification in Non-Balance Coal Reserves, Study of UCG through Possibility of Application in Out of Balance Coal Reserves in BiH, in Serbian, Ph. D. thesis, Faculty of Mining, Geology and Civil Engineering ...
    ... Environmental, Bloomington, Ind., USA, 2011 4] Petrović, D., ef al., Status and Tendecies under Development and Application of UCG (in Serbian), Pro- ceedings, International Conference EEI 2018., Belgrade, Serbia, 2018, pp. 65-73 5] Greeg, D. W., et. al.. Underground Coal Gasification, 4merican Institute ...
    ... Moscow, Russia, 2004 11| Petrović, D. et. al., Possibilities of Coal Conversion into Gas Fuel from the Aspect of Greater Valorization of Available Energy Resources in Serbia by Implementing UCG, RMZ-Materials and Geoenvironment, 57(2010), 1, pp.113-125 Petrović, D. T., et al.: Valorization of No ...

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija

  • Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata

    Dejan N. Radivojević (2014-12-30)
    Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...
    Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika

  • From post-disaster landslides inventory to open landslides data

    Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić (2021)
    ... and state of activity Region Type of movement State of activity Active Dormant Reactivated Stabilized Suspended Abandone d Total W e s te rn a n d C e n tr a l S e rb ia Slides 740 16 195 11 458 6 1426 Slides/flows 43 15 5 72 135 Rockfalls 13 7 2 13 35 Rockfalls/slides ...
    ... movement and types of material involved Region Type of movement Type of material Anthropogenic Debris Rock Soil Complex Total W e s te rn a n d C e n tr a l S e rb ia Slides 10 681 3 710 26 1430 Slides/flows 92 40 3 135 Rockfalls 2 18 9 1 6 36 Rockfalls/slides 1 31 2 9 3 46 ...
    ... available as an open access data. BEWARE project portal is available at http://geoliss.mre.gov.rs/beware/. REFERENCES Abolmasov B., Damjanović D., Marjanović M., Stanković R., Nikolić V., Nedeljković S., Petrović Ž. 2017. Project BEWARE - Landslides Post-disaster Relief Activities for Local ...

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko

  • Tehnologija izrade i opremanje magacina eksploziva za potrebe ležišta bakra

    Aleksandar Milojević (2024)
    Nakon radova otvaranja i početka eksploatacije, rudno telo bakra velikih rezervi zahteva i veliku količinu eksploziva da bi se ostvario zacrtan kapacitet. Samim tim, neophodno je izraditi funkcionalan magacin eksploziva koji će biti pristupačan svim horizontima i koji će moći da ispuni celokupni kapacitet svih horizonata. Obzirom da će se u magacinu skladištiti eksploziv, on mora ispunjavati specijalne uslove kako bi skladištenje bilo bezbedno. Neophodno je isprojektovati magacin tako da ispuni sve zahteve po pitanju količine i načina skladištenja eksploziva, ...
    podzemna eksploatacija, ležište bakra, magacin, eksploziv
    ... bušenje - O [} [= -| o = > d -| -| s = | = s n a | |e S | e = S = P 5 l e l e oO Z = | - | | d = o [5] d Š _ |_ —~ ' S G | B l e = o | > = S O o O l o Z l e | w d d R rik=| - i ii M |wn |- d .m H E O E s o 2 R ...
    ... 25. Troškovi radne snage – Fs F| = o H &R | 85 5 =s9 5 y- ·B B.9 : ' -UNB:B- 8 E i Š I ISE| ;S e E PIBNE-E" ·= E el e i I d Š RER| E F > Š NN= O 5 |s d r G 5 a o d F Ni r Bra Na Ui Ca [0] [0] 60 m' meseci | radnika | r.d./Ćmes | nadnica | m/nad | nad/m | USD/ USD USD nad /m 10,29 | ...
    ... 500 MN/m? gde su: Opa — dopušteno naprezanje na kidanje, 5,174 MN/m? S – površina poprečnog preseka ankera na najslabijem mestu S= BL — o · d,m? d- prečnik ankera, m c – Širina otvora ankera, o = 0,004 m Ukupna dužina ankera: l, = la + l, gde Je: L, — pasivna dužina ankera, deo koji ...

  • Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin

    Filip Anđelković, Dejan Radivojević (2018)

  • Temperature induced evolution of nanostructured Ni0.9Zn0.1O

    Kremenović Aleksandar, Antić Bratislav, Vučinić-Vasić Milica, Colomban Philippe, Jovalekić Čedomir, Bibić Nataša, Kahlenberg Volker, Leoni Matteo (2010)
    The crystal structure and microstructure of as-prepared and annealed Ni0.9Zn0.1O were refined at room temperature in both the Fm (3) over barm and R (3) over barm space groups. It is shown that below the Neel point (458 K), where magnetic ordering triggers the presence of a trigonal strain, the common usage of a higher-symmetry non-admissible space group for crystal structure and microstructure analysis via the Rietveld method may result in both an incorrect structure description and incorrect microstructure ...

  • Comparative structural and optical properties of different ceria nanoparticles

    Nikolić Aleksandar S., Bošković Marko, Fabian Martin, Božanić Dušan K., Vučinić-Vasić Milica, Kremenović Aleksandar, Antić Bratislav (2013)

  • Magnetization enhancement in nanostructured random type MgFe 2O4 spinel prepared by soft mechanochemical route

    Antić Bratislav, Jović Nataša, Pavlović Miodrag B., Kremenović Aleksandar, Manojlović Dragan, Vučinić-Vasić Milica, Nikolić Aleksandar S. (2010)

  • A proposal for the landslide damage questionnaire in suburban areas

    Uroš Đurić, Biljana Abolmasov, Miloš S. Marjanović, Sanja Jocković, Miloš D. Marjanović (2022)
    Landslides are one of the most often natural disasters that have an extensive impact on society including loss of life, destruction of infrastructure and properties, damage to land and loss of natural resources. Landslide losses can significantly vary and they depend on a variety of different criteria such as the size and type of landslide, lithological setting of terrain, the terrain slope gradient, the quality of materials used for construction, and the construction typology. Damage from landslides is usually ...
    istraživanja, objekti, klizišta, rizik, procena

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka
    ... location of the study area B) Groundwater monitoring locations; sections C-C´ and D-D´. C) Regional hydrogeological section through the terrain with four distinct hydrogeological systems (Marinović, 1982, modified). D) Extent and inter-relationships of Tertiary and Quaternary aquifers relevant to drinking ...
    ... and Sanitation Centre, Vol. 17, pp. 1-57. Polomčić, D., Stevanović, Z., Dokmanović, P., Papić, P., Ristić-Vakanjac, V., Hajdin, B., Milanović, S. & Bajić, D., (2011) Groundwater supply in Serbia – Situation and Perspectives. In: Polomčić D. and Ristić-Vakanjac V. (ed) 40 years of the Department ...
    ... l/s) (Table 4). Variant D retained the elevated rate of groundwater abstraction in Hungary, but this rate was reduced in Serbia by 15% relative to the current rate. With regard to the redistribution of groundwater in these circumstances, the water balance in Variant D is similar to that in ...

  • Specifičnosti izgradnje deonice 3 brze saobraćajnice Požarevac-Golubac na organskom tlu

    Vojislav Lučić (2024)
    U ovom završnom radu prikazani su podaci koji se odnose na metode ojačanja terena izgrađenog od slabonosivog organskog tla, kao i njegove geotehničke karakteristike na primeru šireg istražnog prostora, u okolini sela Kumane duž trase treće dionice brze saobraćajnice Požarevac-Golubac. U radu su prvo prikazane osnovne karakteristike i podele organskog tla i treseta, zatim su navedene metode ojačanja tla koje mogu da se koriste na datom istražnom prostoru i na kraju je izvršena analiza i interpretacija rezultata geotehničkih istraživanja ...
    organsko tlo, treset, metode ojačanja slabonosivog tla, slieganje, konsolidacija i vremenski tok konsolidacije
    ... 10000 S•e = 22.487 cm BRZINA KONSOLIDACIONOG SLIJEGANJA U=90%= Ty = 0.848 Cy * too d? Tv * d? c Ty = too — 0.848 * 2202 ., t90 _ — 2 0.001 “ s too * 475d SEKUNDARNA KONSOLIDACIJA t = 5000 d t? Ss =HPt*Ca*logt_ 90 47 5000 ss = 4.4x* 0.01 + log 475 s. = 4.498 cm UKUPNO ...
    ... 13.818 cm BRZINA KONSOLIDACIONOG SLIJEGANJA U = 90% = T, = 0.848 Cy * tog T, = P T, * d? too = |A 0.848 * 957 t90 _ ——— 2 0.001 s too * 89 d 55 SEKUNDARNA KONSOLIDACIJA t = 5000 d t? Ss =HPt*Ca*logt_ 90 000 89 5 s. = 1.9*0.01 +log S. = 3.324 cm UKUPNO SLIJEGANJE ...
    ... do tačke D, uslijed izgradnje trajnog objekta (pri čemu Je ovo povećanje manje od napona oo+40o-), tada Jje slijeganje, tj. promjena koeficijenta poroznosti /e” mnogo manja od promjene koeficijenta poroznosti /e za isti interval napona (tačka A do tačke E). Poželjno je da se tačka D nalazi unutar ...

  • 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 ...
    sucker rod pump, fluid production, mechanical extraction methods,, Prosper, QROD, RODSTAR
    ... API Class D: Generally contains more manganese and chromium than Class K. Used in deep wells or wells with very high loads. Class D is made to withstand medium to very heavy loads in non-corrosive (inhibited) conditions and is further categorized by quality: D-carbon, D-alloy, D-special (AISI ...
    ... INPUT DATA CALCULATED RESULTS (TOTAL SCORE: 53% GRADE: F) Taraet Prod.(m"D): — 11 Fluid level Production rate (m"/D): 10.9 Peak pol.pod ioad (N): · 24758 Run time (hrs/day): — 24.0 (mfrom surtace): - 120 'Oš production (m"/D): 2,6 Min. pol.rodioad (N): — 13944 Tubina pres. (kPa): | 600 (mover pump): ...
    ... Position .00 mm “ 57.150 mm - 2.875" (6.40 Ibyft) 2.441" ID . Lj No - Steel Rods * d 76 Hi D = =s = -i “6 o 200 460 s #oc 1006 Position (mm) 00kg 996.000 kgim*3 Torque 6.00 bar 208G 6 °°°h1°D' g 1500 0500% |Ž 100 85.00 % – 0080bar |E i -50C -1000 o 100 200 300 400 Angle ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology

  • Стабилизација косине приступног пута површинског копа ћерамиде

    Владимир Чебашек, Вељко Рупар, Јелена Мајсторовић Нецковић, Драгана Нишић, Урош Пантелић (2024)
    У југоисточном делу површинског копа Ћерамиде дошло је до формирања клизног тела у косини насипа приступног пута. Клизно тело се привремено стабилизовало и исто се врло брзо може променити услед повећаних количина падавина и инфилтрације веће количине воде у тело косине чиме би се драстично изменила физичко-механичка својства стенског материјала у телу насипа пута и стенског масива у залеђини косине. Геомеханички услови санације клизишта у телу косине приступног пута су анализирани на основу могућности измене геометрије косине формирањем насипа ...
    габион, префабриковани бетонски елеменати, потпорни зид, косина, површински коп

  • History of the development of the hydrodynamic model of the open pit mine “Drmno”, Serbia

    Dušan Polomčić, Jelena Ratković, Vesna Ristić Vakanjac (2023)
    With the creation of a hydrodynamic model, the need for it usually ceases until some next moment when the model needs to be updated and used for the set task for the necessary project documentation or dedicated studies. It is relatively rare that almost every year the model is improved and used for forecast calculations. The paper presents the basic characteristics and development of the hydrodynamic model of the open pit mine “Drmno” for 25 years. This open pit ...
    hidrodinamički model, površinski kop, rekalibracioni model, drenažni sistem