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Упит dcterms_creator_txt:Aleksandra A. Rosić

1674 items

  • Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer

    Saša Milanović (2019)
    Geochemistry and Petrology

  • Polymorphism and photoluminescence properties of K3ErSi2O7

    Predrag Dabić, Marko G. Nikolić, Sabina Kovač, Aleksandar Kremenović (2019)
    alkalni silikati elemenata retkih zemalja, silikati lantanoida, polimorfizam, fotoluminescencija, kristalna struktura
    ... for polymorph 1. A total of 0.2 g of a nutrient made up of a mixture of Er2O3 and SiO2 in a molar ratio of 1:4 was measured. 0.8 g of KF was then added and the mixture was homogenized in an agate mortar. The material thus obtained was transferred to a platinum crucible, covered with a platinum lid ...
    ... for polymorph 1. A total of 0.2 g of a nutrient made up of a mixture of Er,O3 and SiO, in a molar ratio of 1:4 was measured. 0.8 g of KF was then added and the mixture was homogenized in an agate mortar. The material thus obtained was transferred to a platinum crucible, covered with a platinum lid and ...
    ... in the form of a hexagonal prism in combination with a hexagonal base, while crystals of polymorph 2 contain a dihexagonal prism in combination with a hexagonal base, although poorly developed faces of the dihexagonal pyramid can also be noticed. 1. Introduction Silicates form a large number of ...

  • FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... under Global Challenges and C-N in this compound are in a conjugation mode due to the distribution of double bonds and lone electron pairs (Liu et al., 2002). š š š F| ž Ž\ š L š a% 3 NaM-SM E |Eg \' 'KN z a N2 _ :1 k a ____NM /V \gp / a MNL J INRA ŠR 10'00 4000 3000 2000 Wavenumber (cm ) ...
    ... Kragujevac on a infrared spectrometer (Equinox 55, Bruker Optics) equipped with a single reflection diamond ATR accessory (Dura Sample IR II, SensIiR). The samples were prepared in a form of KBr disk, and the spectra (averaged on 32 scans) were collected in the range of 4000-450 cm'!, at a resolution ...
    ... ||gi a)ž 2nd dervate Š | b) JI š š |} š ii s e š H || i š } ž Š | e š - H H 1 a Fi i i NMA 41 “0 — s%0 ~ 300 ~ 3%0 __3MO _1%O0 _ 4M00 00 400 30 3000 3800 2000 Wavenumber (cm') Wavenumber (cm') šžg C), &h ı NA d) . HDTMA š A OE ii |} “ LIJPI | Mig ~FML_R “ š |- L šš s i s BOA A H || ...

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... enabled aquifer characterization of(1) a thin-layered, low-fissured aquifer closely related to the reservoir, with low influence on WMO transients; (2) a low- fissured, compartment aquifer or non-aquifer with minimal to no influence on WMO transients; (3) a well-structured karst aquifer system ...
    ... system: A case study HPP Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study ...
    ... tunnel on the complex hydrogeological system: A case study HPP Pirot, Serbia Igor Jemcov ”, Maja Todorović ', Aleksandar Jemcov P, Marina Ćuk Đurović ? 2, i Show more V — Addto Mendeley < Share 5 Cite https://doi.org/10.1016/j.jhydrol.2024.132068 A Get rights and content 2 Highlights • ...

  • A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)

    Aleksandar Tanasković, Vesna Ristić Vakanjac, Dušan Polomčić, Jelena Močević (2023)
    A sufficiently long time-series of daily discharges is needed to assess the discharge dynamics and calculate the water balance equation parameters of a spring (river source). The paper assumes that a catchment is gauged if a time-series of observations of at least 30 years is available, which is a rare case in Serbia. One-year monitoring is often set up to verify the reserves of a water source or spring intended for capture. Monitoring ceases after the final report is ...
    dinamičke rezerve, bilans voda, površina sliva, karstno vrelo Gornji Dušnik, Suva planina

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    rekultivacija, ugalj, održivi razvoj, višekriterijumsko odlučivanje, VIKOR

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    reclamation, coal, sustainable development, multi-criteria decision making, VIKOR method

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)
    ... non-steady-state flow conditions, during a 4-year period. Also, a hydrodynamic analysis has been performed to assess the possibility of securing a more stable extraction of water from the aquifer during low water levels in the dry season. Done through a simulation of a virtual infiltration channel, should ...
    ... source was simulated through the boundary with a specific flux. In this case, the flux was specified as a function of position and time. The individual well discharges were appointed into the model in accordance with observed well performance and dynamics. A specific case is the impermeable border, which ...
    ... with the water of the Sava River, creating a typical riverbank filtration situation. The river-water regime is even more influential on the groundwater-level fluctuation than the work of other nearby exploitation wells. A simulation of the groundwater regime with a numerical model, used for the analysis ...

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум
    ... Barés, D. Bonamy, and A. Rosso, Phys. Rev. E 100, 023001 (2019). [70] R. A. J. Post, M. A. J. Michels, J.-P. Ampuero, T. Candela, P. A. Fokker, J.-D. van Wees, R. W. van der Hofstad, and E. R. van den Heuvel, Sci. Rep. 11, 3540 (2021). [71] M. Radiguet, H. Perfettini, N. Cotte, A. Gualandi, B. Valette ...
    ... noise standard deviations σ for UWN in Fig. 4(a) and GWN in Fig. 4(b). In the main panels of both Figs. 4(a) and 4(b) we see that the values of γS/T drop quickly when we increase the threshold from zero, while after some value of Vth, there is a plateau, i.e., a wide range of Vth for which the values of ...
    ... noise standard deviations o for UWN in Fig. 4(a) and GWN in Fig. 4(b). In the main panels of both Figs. 4(a) and 4(b) we see that the values of ysyr drop quickly when we increase the threshold from zero, while after some value of Vin, there is a plateau, i.e., a wide range of Vi, for which the values of ...

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry

  • 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 (2021)
    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 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 The three-phase system for municipal waste does not take into account a fact that the composition ...
    ... allows to determine basic physical parameters in a certamn stage of degradation and to display their change, if the initial conditions are known. beforc h·odcgrudaum'\ , iibeć- air (a) h, biodegradation Ž::·'l AhA FB, w water(v) h, j air(a) f water (v) Fig. 3. Phase system change of municipal ...
    ... degradation stage no, n — initial porosity and porosity in a certain stage of degradation Wo, W — initial moisture and moisture content in a certain stage of degradation. 3 BASIC INDICATORS OF PHYSICAL STATE In the paper, a three-phase system of waste was adopted and organic particles ...

  • Regional Debris Flow Hazard Assessment of the Grdelica Gorge (Serbia)

    Miloš Marjanović, Biljana Abolmasov, Jelka Krušić, Uroš Đurić (2024)
    procena hazarda, tečenje drobine, daljina dospevanja, RAMMS, regionalna razmera

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Strukture kristala - odabrana poglavlja iz kristalografije i njena multidisciplinarnost

    Ljiljana Karanović (2024)
    Kristalografija

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • Отварање и припрема лежишта за примену коморно-стубних метода откопавања

    Никола Станишић (2024)
    Циљ мастер рада је да кроз теоријски преглед и практични пример, прикаже процес отварања и припреме лежишта за примену коморно-стубне методе окопавања. Предмет рада је мало лежиште олово-цинкане руде, а од варијација коморно-стубних метода откопавања, изабрана је коморно-стубна метода етажног откопавања са откопавањем одoздо на доле. Рад се бави темама одабира и описа начина отварања и припреме лежишта, методама откопавања, технологијом израде просторија и откопавања лежишта, организацијом рада и проценом трошкова и економичности експлоатације.
    коморно-стубна метода, отварање, припрема, технологија, откопавање
    ... ti Wb a yJ ba K o n n u n H a H 3 M H H H p a H o O r Cp ej ub a Jn yk HH a T p a H c n o p r a K a n a u u r e r K a M u H o H a (3 a /I Ba Y k y n H o Bp eM e yr oB ap a H Uu ac oB Ha no Tp ot im ba ro pH Ba Il or po mi »3 a r o p u B a 10 ...
    ... re pu ja jn a Tp au Hc no pr a C H a r a Mo To pa TI or po ur t» 24 ry Ma I I o r p o m i m a yj ba o r o H u M a r e p u j a j a Cp en mb a 0p 3u Ha Ho cu go cr T Ka tt nk e K a M H O H a y CM eH H) no T O H H M a T e p u j a j a -| s F i ...
    ... cTy0a: E5:a P H:y+E-h-yı < ki 25 · 4814,10 225 · 36 · 2,67 + 25 · 8 · 3,21 < ——— 22269 < 27847 -ycJtOB HcIIyPeH IIpopauyH crpaHune KBajipaTHor cry06a: A Oc' kf kl·H·y—1 10,0 a = – IE __— __ — =2),88 [m] a 000 —ı 2,0 · 36 · 2,67 Ive Je: h8 [m]; H= 36 [m]; A=10 [m]; a—5 [m]; ...

  • Анализа рада дисконтинуалног система на основу симулације утовара и транспорта целог површинског копа

    Милош Јовановић (2024)
    У овом раду анализира се рад дисконтинуалног система утовара и транспорта на површинским коповима користећи софтверски пакет Haulsim. Циљ истраживања је побољшање ефикасности процеса транспорта и оптимизација коришћења ресурса. Симулација је спроведена за различите сценарије утовара и транспорта, укључујући варијације у броју возила, њиховој брзини, капацитету, као и рутама транспорта. Добијени резултати су показали значајне могућности за унапређење постојећих процедура и смањење трошкова. Дисконтинуални системи су сложени и захтевају пажљиву анализу како би се постигла максимална продуктивност и смањење ...
    анализа, симулација, оптимизација, ефикасност, Haulsim
    ... aaaaaaaaa a aaaaaaaaeaaa a a aa a a a aataaaaaatveNı 58 Ta0euna 5.4. KoopnuiHaTe HCTOBApHOr MCCTa a aaa a a a aaaaa a aaeaaaaa a taataaatNoNı 59 Ta0ena 5.5.IInaHupaHu pacrnopc;i Garepa ro pazuinuntTHMa H HOje/UHHauHH KamalHTeTH a 60 Ta0ena 5.6. PeaynrrarH aHajiH3c CHCTCMAa O altyaa a ananaaaaa ...
    ... KamMKap a aeaaaanaaae a a a a a a eaaaa a taoaataaatNoVı 19 Cyka 2.9. ZlaMnep Belaz 75131.aaaaaaaaaaaaaaa da aaaaaaeaaa a aa a aeaaa a taaaaaaatNoNı 23 Cyjka 2.10. /laMitep ca KOMOHHOBAHHM JUH3CJI-TpOJI IIOTOHOM.aaaaaaaa a aaaaaaaaataoaaaakaoNoNı 25 Cjka 2.11. HleMce Kperatba KaMHOHAa a aaaaaaa ...
    ... aeaaaaea a a a aaa a aaaaaaaettVı 27 Cjmka 4.1. 3D MojieJt TepeHa lt a a aaaaea a a aaaeaaaa a aaaaaaa a a aataoaaaaatatNoVı 36 Cyka 4.2. Hnirzten naHena Materials — kapakrepHcTHKC JaJIOBHHC ly aaanaaaaaaaakatotı 37 Cuka 4.3. Hnirzejn naHena Materials — kapakrepHcTHKE yrJba al aaaa a aaataaaaaaatNttı ...

  • Анализа квантитативног и квалитативног режима подземних вода: Случај изворишта за водоснабдевање Друговца у Смедереву

    Милан Павличић (2024)
    У раду су приказани резултати истражних радова који су спроведени у периоду од 13.04.2018. до 31.05.2019, у циљу дефинисање режима и категоризације резерви подземних вода на изворишту за водоснабдевање Друговца у Смедереву. Бунарима ИЕБДР-1/93 и ИЕБД-1/2002 су каптирани песковити седименати неогене старости. У току режимских осматрања вршени су тестови црпења, осматрања нивоа подземних вода, режимa падавина као и квалитетa подземних вода. Утврђене су укупне резерве подземних вода у количини од 5,3 l/s. Хемијске анализе воде показују да је хидрохемијски ...
    режимска осматрања, тестови црпења, неогени седименти, хидрохемијски режим, извориште
    ... — _— – « A — U U ım I, 20 17 – ”– —A C –— :a oj –u u —w v u u 20 19 — –: I J o o z g j r U o a u r a a y uu u I, _= am m O ~O — = a —+—.+wrn . [ W | r “ Tr O ii _ OO ZOZO e= eeoeoc= eoeoOoo_= e === === =>=—= A O GA OGA O GAOA O GA OA O a [s Tooune ...
    ... 2m,o | asa | a | _2,0 0,3 110 196 | -5 | , | 22 11,8 | asa | 212 | 04 | 20,8 | ap | a | a | -o || 102 197 | -15 | 2,3 5,5 7.8 172 | 20,x | 20,5 | 210 |16,5 87 6,4 2,4 10,6 1998 2,7 5,3 4,1 124 |_ a6,0 | 222 | 2, | 22,2 | as | a |_23,5 -3,6 | 11,3 ıo | -o | o,„g 74 127 | a6,x | a | 2A4 | 2m,n ...
    ... n | asa | a | 34 0,8 11,2 2000 | -5 | 3,5 6,0 14,5 | a8,7 | 22,5 | 2%,6 | 2, | a | a3g | 4 2,8 12,7 2001 1,8 3,6 8,8 10, | ai8,2 | a8,0 | 22,5 | 200 | as | a }| aa | a | ua 2002 | -o | 54 8,1 11,6 | 20,8 | 22,8 | 23,9 | 22,0 | aca | 15 sa | -0, 12,5 2003 | -3, | -a | đ5,0 10,8 | 20, | 244 | 23 ...

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... (XRPD). The analysis was performed on a Rigaku Smartlab X-ray diffractometer in a 0-0 geometry using the D/teX Ultra 250 strip detector in 1D standard mode with a CuKou „ radiation source (U=40 kV and I=30 mA). Data were acquired in a 20 range of 3-40% using a low background single crystal silicon ...
    ... of the lyophilzates was analyzed by scanning elec- tron microscopy (SEM). A small amount of the sample was placed on a conductive double-sided adhesive tape and examined with a Zeiss Ultra Plus 55 or Zeiss DSM 940 A microscope (Carl Zeiss GmbH, Oberkochen, Germany). Photomicrographs were taken ...
    ... Yurquina, A., Locatelli, S., Brandšn, S.A., 2012. A complete characterization of the vibrational spectra of sucrose. Carbohydr. Res. 361, 212–218. https://doi.org/10.1016/j.carres.2012.07.009. Bruni, G., Berbenni, V., Milanese, C., Girella, A., Cofrancesco, P., Bellazzi, G., Marini, A., 2009. P ...

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities
    ... structures. Simplified tectonic map of the Albania region presented in Fig. 1. Albania is a Balkan country with a high rate of seismicity. The west coast of Albania is a convergent plate boundary and there is a fold and thrust belt. Adria plate is diving beneath the Eurasia plate to form the Adriatic ...
    ... metadata, and data flow. Used GNSS stations are Class A stations (positions with 1 cm accuracy at all epochs of the period of the used observations). Coseismic deformation is investigated using these stations. By looking at data from a GNSS stations over a period of time, we can determine whether the ground ...
    ... from a GNSS network, it is possible to get a larger view of which areas of the surface are moving as well as the speed and direction of movement. 250 S. Tucikešić et al. 2.2 Seismic Data Albania lies across the convergent boundary between the Eurasian Plate and the Adriatic Plate, as a part of ...