Претрага

Упит dcterms_creator_txt:Ristanović S.

994 items

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... treated with 10mM Al ions (Figure 6 13+ | EAS –—'S—> EA+P Scheme 1. Reaction scheme for non-essential activation; Abbreviations are E—enzyme, S—sKVubstrate, A—activator, P- product. RIGHTSLIMKMK&~Ž --| zj g s P o 5 | Š o S - s = 5 j| E > F3 E o 9 Š Đ 8 8 -| = P F-| ...
    ... to the corresponding control value, from at least three independent experiments performed in triplicate. RIGHTSLIMKMK&~Ž --| zj g s P o 5 | Š o S - s = 5 j| E > F3 E o 9 Š Đ 8 8 -| = P F-| |- o al Ch em is tr y Do wn lo ad ed fr om -| -} P |l = & Š |-5} ...
    ... versus haemoglobin concentration in the absence and presence of different Al ions concentrations at pH2. RIGHTSLIMKMK&~Ž --| zj g s P o 5 | Š o S - s = 5 j| E > F3 E o 9 Š Đ 8 8 -| = P F-| |- o al Ch em is tr y Do wn lo ad ed fr om -| -} P |l = & Š |-5} ...

  • Kvantitativna ocena režima i bilansa podzemnih voda u aluvijonu Velike Morave od Bagrdana do ušća u Dunavu

    Aleksandar Balubdžić (2024)
    Aluvijalni sedimenti velikih reka raspolažu značajnim količinama podzemnih voda, što je zajedno sa površinskim vodama dozvolilo razvoj naselja i ljudskih aktivnosti. Ovaj razvoj uslovljava veće potrebe za vodnim resursima i njihovim kvalitetom. Sa povećanjem eksploatacije podzemnih voda, uticaj iste je značajniji i može da dovede do opadanja nivoa podzemnih voda i pogoršanja kvaliteta. Aluvijon Velike Morave ima značajno rasprostranjenje, usled čega predstavlja važno ležište izdanskih voda sa velikim eksploatacionim mogućnostima. Izradom hidrodinamičkog modela aluvijona Velike Morave od Bagrdana do ...
    režim podzemnih voda, bilans podzemnih voda, intergranularna izdan, hidrodinamički model
    ... Dunav je 297 m“/s. Od toga 120 m”"/s je doprinost Zapadne Morave, 100 m"/s Južne Morave, a 35 m”/s se uliva neposredno u Veliku Moravu. Od pritoka Velike Morave, veće količine donose njene desne pritoke Jovanička reka (oko 5 m”/s), Crnica (oko 2,5 m“/s) i Resava (4,49 m /s) koje dreniraju Beljanicu ...
    ... delove Šumadije manje bogate vodom, osim Lugomira (121 m“/s) i Jasenice (4,7 m/s)“. Prema svakodnevnim merenjima proticaja na hidrološkim stanicama Bagrdan i Ljubičevski most, na slici 6 prikazan je uporedni dijagram proticaja Velike Morave (m*/s) za period od 1948. do 2018. godine. 3000 2500 ...
    ... po pravilu velike i reda veličine 10* - 10 m/s, dok je specifična izdašnost pojedinih bunara od 10-20 l/s. Peskovito-glinovite naslage koje čine povlatni sloj, kao slabo vodopropusne stene, imaju koeficijent filtracije reda veličine 10* - 10% m/s. U zoni Brzan-Lapovo devljina peskovito-šljunkovitih ...

  • Impact of the variability of technological parameters on the effective reclaiming capacity of bucket wheel reclaimers

    Komljenović D., Nurić S., Kričak Lazar, Pantelić M. (2012)

  • On the distribution modulo 1 of the sum of powers of a Salem number

    Dragan Stankov (2016)
    It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... Geologia Croatica 67/3 r č| F3 |E -i | s s|s = LNKOS s|s žš|a& Hi F| t [} = s lo ME 5 fj FH s Fj s|m El 5 F| s [5] r3 - |H s E 20 s & Š s s < šŠ Age Description Sample E 9 8 7 6 BR 1/4 5 |- BR 1/3 41s |- s e 30 j BR 1/2 2– 1- 0 j BR 1/1 Legend ...
    ... Region.- Geol. Soc. London, Spec. Publ, 260, 155—178. KARAMATA, S.. KNEŽEVIĆ, V., MEMOVIĆ, E. & POPEVIĆ, A. (1994): The evolution of the Northern Part of the Vardar Zone in Mesozoic.-- Bull. Geol. Soc. Greece, 30/2, 479-486. KARAMATA, S., DIMITRIJEVIĆ, M.N & DIMITRIJEVIĆ, M.D. (1999): Oceanic realms ...
    ... Cretaceous clastic-carbonate succession in Brežđe (Western Serbia) | Nevenka Đerić, Nataša Gerzina | Geologia Croatica | 2014 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008274 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...

  • Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides

    Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević (2021)
    ... adsorption of S-metolachlor was highest for HDTMA-montmorillonite with 1CEC saturation.  High sorption of examined herbicides on some organically modified montmorillonites creates an opportunity for application of these substrates as potentially useful material for removal of S-metolachlor ...
    ... Herbicides | Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević | Eurosoil2020, online event 2021 | 2021 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005509 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...
    ... batch adsorption method was used to measure the efficiency of inorganic and organic modified montmorillonites for the sorption of the S-metolachlor. Mineralogical characterization of natural clay samples was performed using the X-ray diffraction method. This method was also ...

  • The ‘Umka’ landslide

    Uroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević (2024)
    We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...
    rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoring

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... lang="en"> <s id="Verne80days.n2941"> Between Omaha and the Pacific the railway crosses a territory which is still infested by Indians and wild beasts, and a large tract which the Mormons, after they were driven from Illinois in 1845, began to colonise.s> <s id="Verne80days ...
    ... l'Illinois.s>     <s id="Verne80days. n2941"> Između Omahe i Tihog okeana pruga prolazi kroz predeo u kome još ima Indijanaca i divljih zveri - prostranu zemlju koju su počeli naseljavati mormoni oko 1845. godine, kada su ih prognali iz države Ilinois.s> ...
    ... <s id="Verne80days. n2941"> Ανάμεσα στην Ομάχα και στον Ειρηνικό, το τρένο διασχίζει περιοχές όπου συχνάζουν ακόμα Ινδιάνοι και αγρίμια - τεράστια εδαφική έκταση την οποία αρχισαν να αποικίζουν οι μορμόνοι μετά το 1845, οπότε κυνηγήθηκαν από το Ιλινόις.s> <s id=" ...

  • Производња и одржавање рударске опреме на примеру предузећа Колубара метал

    Вања Миловановић (2024)
    У раду је извршено пројектовање технолошког процеса израде вратила на стругу. Кроз теоријску анализу, дати су основни постулати обраде стругањем, стругови као машине алатке, врсте стругова, начини стругања и примењени алати. У практичном делу, дефинисани су редоследи операција и захвата, режими обраде, изабрана машина алатка и алати за све захвате и одређено укупно време обраде потребно да се направи финални производ. Вратило из студије случаја представља компоненту редуктора погона за копање роторног багера SRs.1200.24/4+VR.
    производно машинство, обрада метала резањем, израда вратила на стругу

  • Geotermalne karakteristike područja Semberije , Republika Srpska

    Igor Glavaš (2024)
    Cilj završnog rada predstavlja, opis geotermalnih karakteristika područja Semberije, Republika Srpska, BiH.Rad se sastoji od opšteg dijela u kojem se navode osnovne karakteristike područja (geomorfološke, geografske, hidrološke,hidrometeorološke, geološke, tektonske i hidrogeološke) i specijalnog dijela koji detaljnije ulazi u tematiku osobina geotermalne energije i njihovih karakteristika u zadatom području kao i definisanje geotermalnog potencijala koje to područje ima.Sa prognoznim litološkim profilima 6 dubokih istražnih bušotina su izrađena 2 regionalna geološka, a njegovom konverzijom i hidrogeološka profila na osnovu kojih je, stečena ...
    geotermalna energija, Semberija, geotermalni potencijal
    ... urađenog 25.04.1986-28.04-1986. godine za bunar S-1 sa ciljem osmatranja promjene temperature vode u izdani Je data u sledećoj tabeli: 33 Tabela 4.5. Podaci promjene temperature vode u bunaru S-1 tokom step-test crpljenja t'(s) Q (//s) S (m) PRIMJEDBA Statički nivo 3420 Povrat nivoa ...
    ... svrhu istraživanja nafte (S-1, S- 2 ı S-3 (danas Sv-1)), a kasnije Još dvije (B-1 (danas Bij-I) i Dv-1). Navedene bušotine i njihova litostratigrafija, navedena u različitim literaturama, je korišćena pri izradi profila karata ranije pomenutih priloga. Bušenje bušotine S-1 u Dvorovima duboke 1 345 ...
    ... nije završena 1 ispitana, te Je izvršena njena likvidacija i napuštanje bušotine. Bušotina S-3 (danas Sv-1) izvedena je u Svinjarevcu (današnje Ostojićevo) do konačne dubine od 1 745 m. Ni na bušotini S-2 ni na bušotini Sv-1, a koje su izvođene za potrebe naftnih istraživanja, nije nabušena nafta ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima

    Jelena R. Malenović - Nikolić (2016-07-12)
    Efikasnost funkcionisanja sistema upravljanja zaštitom životne sredine u rudarskoenergetskimkompleksima zavisi od stepena sprovođenja usvojene politike zaštiteživotne sredine i primene preventivnih mera zaštite životne sredine. Nedostatakfinansijskih sredstava za unapređivanje tehnologije eksploatacije, transporta, pripreme iprerade energetskih mineralnih sirovina u našim rudarsko-energetskim kompleksima,negativno utiče na ostvarivanje ciljeva zaštite životne sredine, a posledice radnihaktivnosti rudarsko-energetskih kompleksa dovode do smanjenja nivoa kvalitetavazduha, vode i zemljišta...
    rudarsko-energetski kompleks, životna sredina, sistem upravljanja,višekriterijumsko odlučivanje, modeliranje
    ... F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M ...
    ... 18.11.16 S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F ...
    ... M T W T F S S M T W T F S S M T W T F S S 10 Jan '16 17 Jan '16 24 Jan '16 31 Jan '16 7 Feb '16 14 Feb '16 21 Feb '16 28 Feb '16 6 Mar '16 13 Mar '16 20 Mar '16 27 Mar '16 3 Apr '16 10 Apr '16 17 Apr '16 24 Apr '16 1 May '16 8 May '16 15 May '16 22 May '16 29 May '16 5 Jun '16 12 Jun '16 19 Jun '16 26 ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Збирка задатака из Механике 1 и Отпорности материјала

    Aна Петровић, Инес Гроздановић (2023)
    статика, отпорност материјала
    ... Be3y Rg = S Koja ce y6auyje y Tpehy jenHauuMHy. Beaa u rnpBe jenHauuHe y6auyje ce y Tpehy M oHa nocTaje: || —S(L sin a) —G(Žcosa) +S(lsina) = 0 19 36upka aanarTaka v3 MexaHuke 1 u OrnopHocTu MaTepujana l S(l—ll)sina=G(— 2 COS Cl) VMlapauyHaBajy ce peakuuja 3wna Ry M cvna y yxxeTy S (jenHake ...
    ... YouaBa ce na cy HanuvcaHe Tpu jenHauviHe paBHoTe>»ke, a na ce M3 HM5MX M3pauyHaBajy TpuMi Her03HaTe Be;JMuMHe Ra, Rg M S: ŽXi=O=S—RB R. =S ŽYi:OZRA_G RA=G=500N + || Ma = 0= —S(I, sin a) – G (Žcosa) + Rp(lsinaq) = 0 Tpeha jenHauuHa je cyMa MoOMeHaTa 3a Tauky 4. MoMeHT cune 3a Tauky je npov3aBon ...
    ... CucrTeMu cuna KpaK cHune Ry (Isin aq) Kpak cuHje S (h sin a) y A KpaK cwute G (I/2 cos q) Cnuka 1.21 Kpauu ceux cuna (3a mauky A) koje Genyjy Ha uimarn Ha Cnuuu 1.22 npuka3aHMi cy cCMepoBUM MOMeHaTa Cuna 3a Tauky 4. Ry s G Rg o o o G A A A Cnuka 1.22 MoMeHmu ceux cunna (3a ...

  • Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković (2021)
    The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...
    severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija
    ... Z o n e S redna G ora S redna G ora Zone Zone S o u t h C a r p a t h i a n s S o u t h C a r p a t h i a n s ZagajicaDepression ZagajicaDepression P an nonian Basin P an nonian Basin S e r b ia n C a r p a t h i a n s S e r b ia n C a r p a t h i a n s B a l k a ...
    ... cover Covered or suggested fault AlpsAlps A p e n n in e s A p e n n in e s C a rp a th ia n s C a rp a th ia n s ALCAPAALCAPA Tisza-D acia Tisza-D acia D inarides D inarides A d ria A d ria H e lle n id e s H e lle n id e s Balkan sideBalkan side Rhodope Rhodope deformation fronts ...
    ... a n i d e s B a l k a n i d e s M o e s i a n M o e s i a n P m l a t r f o P m l a t r f o T F T F TFTF C F C F M o r a v a V a l l e y C o r r i d o r M o r a v a V a l l e y C o r r i d o r Jastrebac Mts.Jastrebac Mts. Vršac Mts.Vršac Mts. Western Vardar ...

  • 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)
    ... 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 57.6390 57.9760 59.3234 59.6614 61.8540 ...
    ... oscillation equation. Model 3 – Determining parameters by applying Lagrange”s theorem. In the rock mass oscillation velocity equation (1), parameter m may be determined by consecutive approximations with applying Lagrange”s thcorem. Model 4 — Determining parameters by applying quotient of relative ...
    ... strength O, = 80.808{MPa], • tensile strength O = 7.590[MPa], • velocity of ongitudinal elastic waves C, = 6661.00[m/ s] , • velocity of transverse elastic waves C, = 2852.67[m/ s] ; = 62.46[GN/m2], • dynamic elasticity modulus FE„ lin • „dynamic Poisson' ratio //„„ — 0.39|iGN/m2] . 6.2 Method ...

  • 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

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Израда хидрогеолошких објеката за потребе захватања подземних вода из алувијона Саве на локацији Мајур (Шабац)

    Лука Обрадовић (2024)
    За потребе формирања изворишта за водоснабдевање фабрике у селу Мајур (град Шабац) технолошком, техничком, санитарном и водом за потребе противпожарне заштите,спроведена су примењена хидрогеолошка истраживања која су обухватила израду две истражне бушотине ЗКИБ-1 и ЗКИБ-2 ,директном методом бушења, са уградњом пијезометарске конструкције и израду једног истражно-експлоатационог бунара. Бунар је израђен реверсном методом бушења уз примену чисте воде као радног флуида.Пројектовани бунар је дубине 30 метара чији капацитет износи 32,67 l/s. Захвата подземне воде формиране у овкиру алувијаних слојева реке ...
    израда бунара, истражно бушење, хидрогеолошка истраживања, Мајур
    ... nujarpaM cpejibero/uHIHHe Bpe}IHOCTH BOJIOCTAJA peke CapBe. 300 250 200 E K3 7 150 5 o -i o o 100 S »v Y o T N Y OTo D s” Ta > 7 . T T!A r ro! O 7 s s S S S S s S S vS S S r ~ r~ > ' “ r r eoBpoggggpgggpgpBgpopgggpgpgpgpog a Cauuka 2.10- /lujazpa cpeotbeoo0uutbux apeonocmu 6o0ocmaja ...
    ... mpoTHmaj CaBc je perucroBaH 2010. romaHe M Ma3HocH 2338,4 m?/s, mok je MHHMMannu 908,5 m3/s aaOemepxKeH 2011. romaHe. HajBehaH cpeXbeMeceuHu mpoTHmaj CaBe M3HocH 4470 m?/s, 3aOemexxeH je TOKOM Maja 2014. ronHe, /OK MHHHMaJHH H3HOCH 251 m3/s peracrpoBaH y aBrycry 2003. Ta6ena 2.7 - CpeOtbeMeceune ...
    ... aoHu IHlanna, Kkanangrer 3BopHirra a3HocuH oKo 600 1l/s, nok je 3a HOKaJIHO BOJIOCHaOJleBaPbe OOc30eDeHo oko 100 1/s. 3a norpe0Oe BonocHa0jneBamba Cpemcke MurpoBHne, KanannTer H3BopHimra je oko 180 1/s, a 3a HaBOJUb5aBabbe Ce KopucrTu oko 500 1/s. Mebyruwm, opBe nu(bpe rpe0Oa y3eTu ca pe3epBoM, Jep ...

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