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Упит dcterms_creator_txt:Milan N. SUDAR

851 items

  • Burnishing Versus Smoothing In Ceramic Surface Finishing: A Sem Study

    Ionescu Corina, Volker Hoeck, Crandell Otis N., Šarić Kristina (2014)
    From the Neolithic up to the present, people have used various methods to improve the surface of ceramic objects. In this study, we look specifically at smoothing and pattern burnishing of ceramics produced today by traditional methods. Optical microscopy and SEM show specific surface changes. Smoothing results in an irregular surface, which causes diffused reflection of light. Burnishing produces an even and compact surface, which causes specular reflection and lustre. The results can be used to infer methods of ...

  • Microemulsion with aromatic oil as cleaner media for electropolymerisation

    M. Ilić, F.-H. Haegel, S. Zlatanovic, N. Potkonjak, B. Simonovic (2005)
    Abstract Microemulsion polymerization is widely used as a cleaner alternative way to prepare intrinsically conductive polymers. We studied isothermal phase diagrams for microemulsions of the electropolymerizable heterocyclic aromatic oil 3,4-ethylenedioxythiophene (EDOT), aqueous LiClO4 solution and alkyl polyethoxylate. Our specific goal was to assess the effect of LiClO4 salt on the phase behaviour. The phase behaviour was characterized by stepwise titration and microscopic analyses. Here we found that the increase of the concentration of LiClO4 salt shifts the microemulsion region ...
    Микроемулзија, понашање фаза, EDOT, LiClO4

  • The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia

    I. Kojic, J. Kus, D. Zivotic, K. Stojanovic (2021)
    ... samples, n-alkanes prevail, followed by hopanoids and diterpenoids, while steroids, non-hopanoid triterpenoids, fernenes, sesquiterpenoids, and isoprenoids are present in low concentrations. An exception is Middle Miocene sample, which is characterized by a higher abundance of hopanoids than n-alkanes ...
    ... activity that favours decomposition of wood tissues. In all samples long-chain n-alkanes (C26–C33) are the most abundant, exhibiting notable odd- over even predominance. The elevated contents of mid- chain, C23 and C25 n-alkanes, resulting in higher Paq index, are observed in Lower Miocene samples ...
    ... precursor OM. However, the Di/(Di+Tri) ratio < 0.5 (Bechtel et al., 2003) suggests a greater contribution of angiosperms. The contents of C27 and C29 n-alkanes in relation to C31 and C33 homologues imply similar impact of forested and reed-mire vegetation. The presence of tricyclic (abietane, pimarane ...

  • Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles

    Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)
    Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...
    Kinetika, Ravnoteža, Ru(II), L-Histidin, Guanozin-5' -monofosfat, Dimetilsulfoksid, Tiourea
    ... for their cytotoxic properties, such as polypyridyl complexes cis-[Ru(N,N-bpy)2Cl2] and mer-[Ru(N,N,N- trpy)Cl3] [12, 13], aminocarboxylato complexes [Ru(N,- N,O,O-pdta)Cl2] (pdta = 1,2- propylenediaminetetraacetato) and [Ru(N,N,O,O,O-edta)Cl] (edta = ethylenediaminete- traacetato) [14, 15], dime ...
    ... from the intercept of the observed lines (Fig. 2). It is very small and contributes little to kobsd. N Ru NN N Cl N NH N N O NH2 N O H HH HH OH OPO O O H2N CH C CH2 OH O N NH H2N C NH2 S H3C S CH3 O DMSOTuL-His 5'-GMP[Ru(trpy)(bpy)Cl]+ Fig. 1 The structures of complex ...
    ... dimethylsulfoxide complexes cis- and trans-[Ru(S-DMSO)4Cl2] [16–18], and arylazopyrdine complexes [Ru(N,N,N,N-azpy)2Cl2] (azpy = 2-phenylazo- pyridine) [19, 20]. More recently, two classes of structurally similar Ru(III) complexeswere synthesized and investigated for antitumor activity: [HL]trans-[RuCl4L2] ...

  • Identification of the Best Available Renewable Energy Source for Electricity Production in Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    Around 2/3 of electricity production in Serbia originates from coal-fired thermal power plants. The most significant domestic coal deposits are lignite deposits, a type of low -quality coal that causes negative health, climate and environmental impacts during the combustion. To reduce those negative impacts on domestic electricity production and to promote environmental awareness, the Serbian Energy Sector Development Strategy and the National Action Plan for Use of Renewable Energy Sources indicate the plan for increasing the share of ...
    Strategija obnovljive energije, Održiva energija, Proizvodnja električne energije, Solarna energija, Biomasa, Hidroenergije, Energija vetra
    ... -quality coal that ca uses negative h ealth, climate a nd environmental im pacts during the com bustion. To reduce th ose n egative im pacts on dom estic electricity pr oduction a n d to pr om ote env ironmental a w areness, the Serbian En ergy Sector Development Strategy and the National Action Plan ...
    ... place. Taking into consideration the results, it can be con cluded that biom ass h as a certain priority in planning n ew pr oduction capacities to m eet dom est ic electr icity n eeds. ...
    ... ethod is u sed for a ssessing four renewables (biom ass, hydro, solar and wind) in regard to the defined criteria. The obtained weights for the a n alyzed RES are formed according to the experts' judgments and availa ble literature. The results of th e FAHP reveal that biom ass has the highest rank ...

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... enrichment of sentence-aligned domain-specific corpora is the long-term activity. 2492 Se rb ia n G iz a C hu nk Se rb ia n G iz a L em m at iz ed Se rb ia n E xt ra ct ed Se rb ia n D ic ti on ar y E ng lis h D ic ti on ar y R es ul t se ts M W T bi bl io te čk ih ...
    ... zn ač no st ob ja šn je nj e di sa m bi gu at io n 1, 3, 5, 6 ye s a ra zr eš av an je a ra zr eš av an je ob ja šn je nj e di sa m bi gu at io n 1 po st oj ip ov ra tn a sp re ga da po st oj ip ov ra ta n sp re ga po vr at an ve z fe ed ba ck 1 ip ov ra tn ...
    ... bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te ka rs ki m dr uš tv im a bi bl io te ka rs ki dr uš tv o u bi bl io te ka rs ki dr uš tv o bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te čk ...

  • An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)

    N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero (2020)
    Paleontology,Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics,Oceanography

  • 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 ...
    tlo, nasip, analiza stabilnosti, faktor sigurnosti, geosintetici
    ... Force=71.3479 kN Driving Horizontal Force=103.153 kN 30 60 70 80 90 10\ 90 70 60 50 Safety Factor 0.000 0.500 O OO N N O — N I o ı O Material Name .000 .500 .000 .500 .000 .500 .000 .500 .000 .500 .000+ Unit Weight (kN/m3) Strength Type ...
    ... Strength Type %::7::;'; Phi | Water Surface | Hu Type | Ru Nasip 18 Mohr-Coulomb [n] 32 None [n] Pr-gp IBl 19 Mohr-Coulomb [} 24 None [} pr-sg |D 19.5 Mohr-Coulomb [} 33 |Water Surface | Constant PL-ps |} 19 Mohr-Coulomb [n] 33 | Water Surface | Constant PL-LP |} 20 Mohr-Coulomb | ___24 — | 21 |Wa ...
    ... Strength Type %::7::;'; Phi | Water Surface | Hu Type | Ru Nasip 18 Mohr-Coulomb [n] 32 None [n] Pr-gp IBl 19 Mohr-Coulomb [} 24 None [} pr-sg |D 19.5 Mohr-Coulomb [} 33 |Water Surface | Constant PL-ps |} 19 Mohr-Coulomb [n] 33 | Water Surface | Constant PL-LP |} 20 Mohr-Coulomb | ___24 — | 21 |Wa ...

  • 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)
    ... 3030 cm ! and band at 3018 cm ! represent vs(N-CHx) vibrations (Madejova et al., 2009), alttough some authors state that this band at 3018 cm ! originate from v.(N-CHx) vibrations (Li et al., 2008). Shoulder at 2945 cm"! originates from overlapping v.(N-CHs) with va(CHhx) vibrations (Madejova et al ...
    ... between PTMA* cations and montmorillonite (Fig. 1e). The band at 1594 cm"! disappeared, probably as a result of the interaction between n electrons of the phenyl ring and n celectrons of the oxygen in the tetrahedral layer of the montmorillonite (Majdan et al., 2009). Also, the band at 1300 cm"! disappeared ...
    ... e takes place through the interaction between the aromatic benzene ring of S-metolachlor and the aromatic benzene ring of the organic complex (nm-n bonds). Also, the formation of a hydrogen bond occurs between the molecules of S-metolachlor and the molecules of water 329 SERBIAN SOCIETY OF SOIL ...

  • 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
    ... Ni(Mecem). 3a OBO BpeMe yTPoIH ce HajiHHia: N, =n n N, nadnica Ine je: nr — Opoj pajiHHKa JIHeBHO; nra — Opoj paniHHx JaHa MeceuHo (25); — BpeMe Hy3pajtle XOJIHHKa (Mecenb). VuuHak Ha H3pajui ripocropuje Ouhe: Ui = N m /nadnici n OJUHOCHO: n · bi —,nadnica /m IIpaka3 npopauyHarux ...
    ... - - -| = = Š | Mu ac oB Ha no Tp ot 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 ...
    ... Hapajny ] m nojrmaeMHe npocropHje: n =—_—, [mš/min] CneradauHa norportma npu0opa 3a Oynrtepe: 56 Ine cy: N – ykynan 0poj H3OynrteHax OyntoTuHHa; lb — nyxxaHa OymoTHHe; n – KoeQurujenr Hckopnmihema Oymrnrune (0,9). HopwarnuB ekcrmo3HBa H3HOCH: m= [kg/m} n Ine je: In — eeKTHBHa nyxxaHa ...

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • 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

  • Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)
    oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem
    ... orientation of the Cerna Fault, which becomes more N-S oriented (S2, Fig. 4). Within the main fault zone, Cerna-parallel faults truncate earlier dextral faults rotated clockwise and are associated with few normal faults (S2, Fig. 4). Furthermore, the main N-S oriented Cerna SSENNWWSWENE SN NESW NESWSENW ...
    ... Basins (S5, Fig. 4), where the N-S oriented Timok Fault separates the Forebalkan cover (Tithonian limestones) to the east from the Timok zone of the Getic unit (Turonian clastics) to the west. These Tithonian limestones are intensely deformed (Fig. 5d) by sub-vertical N-S oriented dextral strike-slip ...
    ... north, there is an extension in the N-S direction creating E-W oriented normal faults. Strike-slip faults accommodate the abrupt change of indenter margin-parallel component of displacement. When there is a more gradual change in displacements (like along the N-S oriented indenter margin, northernmost ...

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... statistika K-W testa, ΣR – suma rankova, Mean R – srednja vrednost rankova) K: K-W p =0.0000 H(2, N:155) =42.2 U: K-W p =.0000 H(2, N: 155) =28.97 Th: K-W p =.0014 H (2, N:155) =13.1 Grupa N ΣR Mean R ΣR Mean R ΣR Mean R Na-HCO3 96 9250 96.35 6039 62.91 7960 82.92 Ca-HCO3 34 1659 48 ...
    ... voda (ΣR – suma rankova, Mean R – srednja vrednost rankova) Grupa N K: Kruskal-Wallis test:H (5, N= 144) =12.87212 p =.0246 U: Kruskal-Wallis test: H ( 5, N= 144) =21.08905 p =.0008 Th: Kruskal-Wallis test: H ( 5, N= 144) =22.96684 p =.0003 ΣR Mean R ΣR Mean R ΣR Mean R 1 9 366 ...
    ... noA HacnoBoM Xn4poreoxennuja n pil poAH r4x paAroa Kril BH r4x er eMeH ara y noA3eMH n M BoAaMa Cp6raje pe3ynrar concrBeHor ilcrpalKilBaqKor paAa; Aa Ahceprar-qr,rja y qenilHh H14 y AenoBtlMa Hr,rje 6una npeAnoxeHa 3a crilqalbe Apyre Ail nnoMe n peMa cry4rjcxnM n po rpa MilMa Apyrhx B 14co Kour ...

  • Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining

    Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... the goal to its fulfillment [31]. Energies 2019, 12, 2245 6 of 16 Energies 2019, 12, x FOR PEER REVIEW 5 of 16 1 1 1 2 1 n 11 12 1n 1 1 2 2 2 n 21 22 2n n 1 n 2 n n n1 n2 nn w /w w /w ... w /w a a ... a w /w w /w ... w /w a a ... a M= = ... ... ... ... ... ... ... ... w /w w /w ... w /w a ...
    ... Consistency Index (CI) is done using Equation (3). CI = (λmax − n) (n − 1) (3) where λmax represents the maximum value of the calculated matrix and is defined using Equation (4) while n is the number of analysed objects. λmax = 1 n n∑ i=1 λi (4) The Consistency Ratio (CR) is defined using the following ...
    ... Consistency Index (CI) is done using Equation (3). max(λ n)CI= (n 1) − − (3) where λmax represents the maximum value of the calculated matrix and is defined using Equation (4) while n is the number of analysed objects. n max i i=1 1λ = λ n (4) The Consistency Ratio (CR) is defined using the ...

  • Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica

    Natalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel (2019)
    Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and Technology

  • Стратешки програми управљања течним и гасовитим енергетским Минералним сировинама

    Даниловић Душан, Каровић-Маричић Весна, Лончаревић Милан (2011)

  • Clogging of water supply wells in alluvial aquifers by mineral incrustations, central Serbia

    Majkić Dursun Brankica, Vulić Predrag, Dimkić Milan (2015)

  • Проширивање мреже пловних путева Републике Србије у функцији одбране земље

    Милан Кресојевић, Весна Ристић Вакањац, Драган Трифковић (2023)
    Мрежу пловних путева Републике Србије чини мрежа међународних и међудржавних пловних путева. Међународне пловне путеве чине реке Дунав, Сава, Колубара, Дрина, Канал Дунав-Тиса-Дунав (Д-Т-Д) „Нови Сад – Савино село“ и Беочински рукавац – канал, док међудржавни пловни пут на коме важи међународни режим пловидбе чини река Тиса. Поред наведених пловних путева који већим делом обухватају територију Аутономне покрајине Војводине, Република Србија има потенцијал проширења мреже пловних путева и у централном делу Србије пре свега у Поморављу. Проширењем мреже пловних ...
    унутрашњи пловни пут, Велика Морава, одбрана земље, бродови Речне флотиле

  • 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
    ... shape and size of n i Ra5 o — - particles in the landfill can be of great use in defining m:;';]on and selection || > M @523331 the phase composition and physical indicators of iušLte008| Y Horanalysis| municipal waste. In addition, physical properties of •n žž% M:s| ; H n pj ii r waste change ...
    ... following expressions: |. O ı_M H[l Ah (1—"0)F n=m An—n„—To Q) 1_Z H() w=w, — 4 G) m where: mx, mya — initial dry mass and mass of drained water Žuo, }a — Initial dry unit weight and dry unit weight in degradation stage no, n — initial porosity and porosity in a certain stage ...
    ... 1994). Parameter Mark Unit Relations Unit weight Y kN/m) Y=W/V=(I+w) ·Ya Void ratio e mš/m* e= V /V, = | ___I-n 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* ...