Претрага
942 items
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)
Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...... and carbon specific isotope analysis (δ13C) of individual n-alkanes in initial bitumen extracted from two immature oil shale samples (D13 and D16) and corresponding LPs obtained by the OS and the CS pyrolysis. The distribution of n-alkanes (C14–C35) in LPs differs from those in bitumen of raw ...
... distribution of n-alkanes depends on maturity changes that particularly occur in the CS pyrolysis, it also depends on the kerogen precursor material. The prevalence of lower homologues in LPs is consistent with the predominantly algal origin of organic matter (OM) (Gajica et al., 2017). The n-alkane d ...
... respectively). The isotope δ13C values of individual n-alkanes range between –30.2 and –33.8 ‰ with average value of –31.9 ‰ in the sample D13 and from –28.7 to –32.5 ‰ (average value –30.9 ‰) in the sample D16. The δ13C values of individual n-alkanes in LPs from the OS of samples D13 and D16 are ...Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović. "Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134040
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Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу
Милана Мичета (2024)Подземне воде представљају изузетно важан природни ресурс, као и важну компоненту система, којим је представљено тло. У складу са тим, приликом пројектовања плитких темеља на крупнозрном тлу, односно приликом анализе граничне носивости и слегања, треба узети у обзир и утицај воде. Верује се да ниво подземне воде значајно смањује носивост тла, док се слегања значајно повећавају. Terzaghi (1943) је први сугерисао да се потапањем масе тла, његова носивост смањује за половину, док се слегање удвостручује. Циљ овог рада је ...... 8 0.8 «0.76 NPV=0.4 m NPV=2.0 m NPV=3.9 m c n e r a m e (c m) = = npopauyH cw HO: mcw mHjarpaM M Peck,Hanson H Thornburn m Bowles = Agrawal u Rana /lujazpa 4 – 4nanusa caezaba 3a no6pamHu nepuoo oO zo0uHy OaHa CJIELAMbE 3A BPEME t, = 10 god cn er am wb e (c m) = = npopauyH cw ...
... T615/21 nupunor Op. 6 B) Tpehu cnyuaj HIIBs= 3.9 m B= im p e - q d L | - T - |y =1 .1 m| NP V- 3, 9 m 2. 8m -4 d» } h; I f [O P i 9 ji bA E a Pr FI qrF = c· N-s-dci, +y · Dy · Nasadaqiq + 0.5 · y · B · N,sydyLy kN kN qy=3kPa:23.91:1·1.5-1+{19.25%.1.1(+207 -04 ...
... (pn) bhsi=1.1m bs=2.8 m hs=3.3 m hsi=4.7 m y= 19.2/9.2 kN/mž y= 20/10 kN/mš y= 20.6/10.6 kN/mš | y= 20.7/10.7 kN/m3 c=4kPa c=3 kPa 0 0 q= 289 q= 279 q= 349 q= 359 B=1m D=1.5m qr = c· N.s.dci, +y · Dy · Nasqdaqiq + 0.5 · y · B · N,sy,dyLy “akTopH HOCHBOCTH: N. = (Nq, — 1) * ctg o == ...Милана Мичета. Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу, 2024
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Dvodimenzionalna geometrijska morfometrija prvih gornjih molara hominina sa teritorije Srbije - taksonomska i metodološka analiza
Predrag N. Radović (2022)Primarni cilj ove studije tiče se taksonomske identifikacije fosilnih prvih gornjih molara (M1) hominina pronađenih u Srbiji, primenom metoda dvodimenzionalne (2D) geometrijske morfometrije. U prvoj (metodološkoj) fazi istraživanja ispitana je efikasnost 16 različitih pristupa (geometrijskih modela) u klasifikaciji M1 neandertalaca i anatomski modernog čoveka. Modeli su testirani na dva seta okluzalnih projekcija krunica (n = 34 i n = 64) dobijenih orijentisanjem digitalnih 3D modela u virtuelnom okruženju ili fotografisanjem fizičkih primeraka zuba. Prilikom testiranja primenjena je klasifikacija zasnovana ...2D geometrijska morfometrija, prvi gornji molar (M1), taksonomska identifikacija, neandertalci, anatomski moderni ljudi, Pešturina, Velika Balanica, SrbijaPredrag N. Radović. Dvodimenzionalna geometrijska morfometrija prvih gornjih molara hominina sa teritorije Srbije - taksonomska i metodološka analiza, Beograd : [P. Radović], 2022
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The Early Middle Palaeolithic in the Balkans. The case of Velika and Mala Balanica (Serbia)
Mihailović, D., Belen Marín-Arroyo, A., Bogićević Katarina, Morley, M. & Roksandić, M.. "The Early Middle Palaeolithic in the Balkans. The case of Velika and Mala Balanica (Serbia)" in European Society for the Study of Human Evolution (ESHE). Inaugural Meeting, 23-24. September, Leipzig, Germany. (2011): 71-71
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Istraživanje faune makrozoobentosa u izvorima
K. Belanović, I. Živić, Z. Marković, Ilić Marija, M. Radulović, M. Živić. "Istraživanje faune makrozoobentosa u izvorima" in Rizici i eko -bezbednost u postmodernom ambijentu -Internacionalna konferencija, septembar 19-12 jun, Novi Pazar, Novi Pazar:Državni univerzitet u Novom Pazaru (DUNP) (2010): 89-97
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Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation
Batch adsorption experiments in the presence of oxygen were performed to study the interlayer reactions of aniline on Cu(II)-montmorillonite in aqueous solutions. At concentrations below a critical value of CC ) 2.6 mmol dm-3 only a colored Cu(II)-aniline complex is formed, characterized by a stability constant of log(Kassoc/dm3 mol-1) ) 1.5. At concentrations beyond Cc aniline polymerizes yielding a dark brown product, which is identified by two vibrational spectroscopy techniques, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and ...M. Ilić, E. Koglin, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation" in Langmuir (2000). https://doi.org/ 10.1021/la000534d
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Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release
The interaction of dodecylsulfate anions (DS−) with homoionic Ca-, Mg-, Ni-, Cu-, Cd-, Pb- and Fe-montmorillonites were investigated. Mg- and Cd-montmorillonite do not adsorb DS−, and an anion exchange at the edges of the clay mineral does not take place. Three different adsorption processes are identified on the other montmorillonites: i) Fe-montmorillonite is covered with amorphous iron hydroxide, and DS−-anions are bound at positively charged sites. ii) On Ca- and Pb-montmorillonite DS− is precipitated as Me(DS)2. iii) On Ni- ...M. Ilic, J. Gonzalez, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release" in Colloid Polymer Science, Springer Science and Business Media LLC (1996). https://doi.org/10.1007/BF00656626
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Geonasleđe Golije i Peštera
Ljiljana V. Grujičić-Tešić (2017-09-01)Sprovedena istraživanja u ovoj studiji obuhvatila su izdvajanje, opis, evaluaciju i valorizaciju objekata geonasleđa u cilju razvoja istraživane oblasti sa stanovišta geonauka, geoturizma i geoekologije. Na izučavanom području objekti geonasleđa su evidentirani, interpretirani, vrednovani i kategorisani, dat je predlog promocije geoobjekata, i na kraju predložena dopuna inventara objekata geonasleđa Srbije.U protekle četiri godine, na kompleksu geotopa Golije i Peštera istražena su geološka svojstva stena (tip stene, starost, fosilni sadržaj, morfološke i hidrogeološke karakteristike itd.), na osnovu čega je bilo ...... J E K A T G EO N A SL EĐ A GLAVNE VREDNOSTI (Mn) DODATNE VREDNOSTI (Av) G L A V N E V R E D N O S T I (M n) D O D A T N E V R E D N O S T I (A v) R et ko st R ep re ze nt at iv no st Z na nj e o ge ol . n au ka . N iv o in te rp re ta ...
... London. pp.1 - 5. Brković, T., Malešević, M., Urošević, M., Trifunović, S., Radovanović, Z., Dimitrijević, M., Dimitrijević, N. (1977): Osnovna geološka karta SFRJ 1: 100000. Tumač za list Ivanjca K34 - 17 - Savezni geološki zavod. Beograd Bruschi, V. M. & Cendrero, A. (2005). Geosite evaluation: ...
... na rešavanju građe paleozojskih tvorevina Drinsko-Ivanjičke oblasti. Geol. an. Balk. poluos., 49. 11-160. Dragišić, V., Špadijer, S., Živanović, V. i Krmpotić, M. (2007): Hidrogeološke karakteristike termalnih karstnih vrela u lokalnosti Čedovo kod Sjenice. 7.simpozijum o zaštiti krasa. Bačka Palanka ...Ljiljana V. Grujičić-Tešić. "Geonasleđe Golije i Peštera" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2017-09-01)
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The Reciprocal Algebraic Integers Having Small House
Dragan Stankov (2021)Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The Reciprocal Algebraic Integers Having Small House" in Experimental Mathematics (2021). https://doi.org/ 10.1080/10586458.2021.1982425
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Definisanje metodologije određivanja granice površinske eksploatacije za sedimentna ležišta fosfatne rude u Jordanu
Abu Hasan Abdel Fattah M (1980)Abu Hasan Abdel Fattah M. Definisanje metodologije određivanja granice površinske eksploatacije za sedimentna ležišta fosfatne rude u Jordanu, Beograd:Rudarsko Geološki Fakultet, 1980
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A new optimal eighth-order family of multiple root finders
Dejan Ćebić, Nebojša M. Ralević (2022)Dejan Ćebić, Nebojša M. Ralević. "A new optimal eighth-order family of multiple root finders" in Journal of the Korean Mathematical Society (2022). https://doi.org/10.4134/JKMS.j210607
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An efficient class of optimal sixteenth-order root-finding methods and their basins of attraction
Dejan Ćebić, Nebojša M. Ralević (2022)Dejan Ćebić, Nebojša M. Ralević. "An efficient class of optimal sixteenth-order root-finding methods and their basins of attraction" in Journal of Mathematical Chemistry, Springer Science and Business Media LLC (2022). https://doi.org/10.1007/s10910-022-01371-6
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Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis
... Pyr400 to Pyr500. L њ + : “ м “ ШРОРИИИИ | РИ ЛИГР УИИИ Figure 1. Тога оп сћготагортатз ој aliphatic јтаспопз (А, В) апа aromatic fiacfions (С, D) ор таптх соа! ехтаст апа соттезропате аша ругођузаге аг 450 "С. n-Alkanes аге ТађеЏед according to феш carbon number, A — 1-n-Alkenes with same number ...
... tetranor-lupa-1,3,5(10), 6 8,11,13- heptaene; ТеН – tetraaromatic ћорапе; BE – C;; Бепгоћорапе; N –парћфајепе; ОВЕ – dibenzofuran: Р – phenanthrene; А – anthracene:; F – fluorene; Py – рутепе; С – сшузепе; ргебхез М, D, T and Te ш беше (D) assigned methy1, dimethyl, trimethy1 апа tetramethy1, тезреспуеју ...
... pyrolysates have similar distributions ог n-alkanes with the prevalence ог mid-chain homologues (C?-C>s5) and the equal abunđance ог odd and even numbeređ n-alkanes (Carbon Preference Index, CPI ~ 1). ја lignite extracts 67С was measured only оп С)5-С31 odd n-alkanes, whereas in the pyrolysis prođucts ...Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović. "Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis" in 29th International Meeting on Ogranic Geochemistry, 1-6 September 2019, Gothenburg, Sweden , European Association of Organic Geochemists (2019)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... Geosciences, n. 31, p. 35-43, 2005. SCHOFIELD, W., BREACH M. Engineering surveying. UK: Elsevier, 2007. STOILJKOVIC, V. et alii. Apriori accuracy evaluation for the crosscut in a horizontal plane between the VI horizon and the P2 SD adit of the "Blagodat". Underground Mining Engineering, n. 23, p. 33-44 ...
... the variance-covariance matrix for standard deviations of coordinate differences was established: 22 , , 22 , 0 0 N N ET d N E N E E N N N E d d d K A K A E E N E d ν σ σσν σ σσ ν ν ν Δ Δ Δ Δ Δ Δ Δ Δ ∂Δ ∂Δ ∂Δ ∂Δ⎡ ⎤ ⎡ ⎤ ⎢ ⎥ ⎢ ⎥ ⎡ ⎤⎡ ⎤∂ ∂ ∂ ∂= ⋅ ⋅ = ⋅ ⋅ =⎢ ⎥ ⎢ ⎥ ⎢ ⎥⎢ ⎥∂Δ ∂Δ ∂Δ ∂Δ⎢ ...
... by using the known equations (Boershch- Komponiets et alli. 1989): Whereby: N i , E i - coordinates of the last traverse point set out; N i-1 , E i-1 - coordinates of the previ- ously set out traverse point; ∆N i i-1, ∆E i i-1 - coordinates of the differ- ence between the traverse points; ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software
The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić. "Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software" in Podzemni radovi, Beograd : Rudarsko-geološki fakultet (2024)
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Two approaches to compilation of bilingual multi-word terminology lists from lexical resources
In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Two approaches to compilation of bilingual multi-word terminology lists from lexical resources" in Natural Language Engineering, Cambridge University Press (CUP) (2020). https://doi.org/10.1017/S1351324919000615
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Izbor metode otkopavanja u horizontalnim pojasima odozgo naniže na primeru ležišta Cu
Tomislav Lazić (2024)Nakon brojnih geoloških i rudarskih istražnih radova, i sa površine terena i iz jame, pristupa se otkopavanju rudnog tela lociranog u centralnom delu jednog velikog ležišta bakra.Eksploatacija se obavlja u odnosu na već postojeći jamski sistem, ali i kroz novoizrađene prostorije. Za postizanje najboljih rezultata primenjena je metoda za otkopavanje rude u I eksploatacionom pojasu vrši „: Metoda otkopavanja sa zapunjavanjem otkopanog prostora odozgo naniže“.Koristi se najvećim delom dizel mehanizacija, a usklađivanjem radnih operacija postiže se veliki kapacitet na ...... > . -| H > c c 4 .Ž . o | o 54 % | o r-a=| r-a=| o . -r o s 55S Š o es -N? -N? -N i > . = B | Z m= | . | 93 | 5 5h EI 8 < F EBR BEG -BI [-v |_ = – . [ F T[ Tu[ || T\t T\up Ut Utm Tp m? min/m ' | min/m m h h/m m/sm | m/mes | h/sm 23,90 13,48 13,5 3,0 0,22 0,22 49,0 2.260 0,67 24,17 18,96 ...
... čuqonod m*/cik | m*3/m" 1.482 |0,50 1.316 |0,44 E O A 4A aai opoA l u s o n o d tuotJroodS mšž/mi n 0,007 0.007 — I Od {[UDITUTUI ı p[uosnq 9UIOA min/m Tl'l 41 37 || vefuosnq SUIOIA | Oudnyjf{} Tbm min 123 111 || m._:.o D@W@.«N. *eluo[und ...
... u omojo umtnoy |3 B's|m — | „ — ATZO1d5|o - Me o eupioy g 9| K | X ĐATZO1dS5o i s PUIIJONI -Š = = r A A A M O A , - - t u m D H O M — 2 0 0 a o n BATZO|USD5|o N op |coy = vuproX |G 9 |G + | n tAT1ZO|dSyo + + PuTI[Oy ...Tomislav Lazić. Izbor metode otkopavanja u horizontalnim pojasima odozgo naniže na primeru ležišta Cu, 2024
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Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands
A series of novel ternary Co(II), Ni(II) and Cu(II) complexes containing 2,20-dipyridylamine (dipya), 2,20-bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and ...комплекси прелазних метала, карбоксилатни лиганди, N-лиганди, кристална структура, магнетна својстваJelena Rogan, Dejan Poleti, Ljiljana Karanović, Zvonko Jagličić. "Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands" in Journal of Molecular Structure, Elsevier BV (2011). https://doi.org/10.1016/j.molstruc.2010.11.024
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Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E
Luka Nikolić (2024)Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ili diskontinualnim načinom rada.Kod kontinualnih sistema, primenjuju se kompleksne rudarske mašine kod kojih se proces odvija neprekidno odnosno bez ciklusa utovara, transporta i odlaganja i najčešće rade u sve tri smene. Rotorni bageri i bageri vedričari, transporteri sa gumenom trakom, odlagači ili deponijske mašine čine tkz BTO ili ...... potrebna za kopanje: Nyu = N * Tlnr — Na = 900 * 0,9 — 58,87 = 751,13 kW Brzina okreta tocka i sila kopanja: 68 Univerzitet u Beogradu – Rudarsko-geološki fakultet Diplomski rad 60*U T7T*D*nm 7r*9*5,85 m n = — U =O ——= = 2,75 — T7T*D 60 60 s n 134,7 n, = = _ = 5,85 m 23 nr- broj obrtaja rotornog ...
... = 0,5316 čr1 = 57,99 qp- zapremina vedrice, m? n- broj praznjenja vedrica, min'! hi- visina podetaže, m s- debljina odreska, m 56 Diplomski rad Univerzitet u Beogradu – Rudarsko-geološki fakultet Vbo,max- maksimalna brzina okreta strele, m/min Osnovna brzina okretanja nosača radnog točka: ...
... 94mm > Koeficijent ekscentricnosti opterecenja fe= 1,25 > Koeficijent korisnog dejstva m= 0,5 Snaga za kružno kretanje: N= ž M*omax _ (Mp+Mn+Mt+M»)*omax o 105*hko 103%1;o ___(855+173+79+4,5)*0,022 N, o 0,5 = 49kW Na bageru se nalaze 2 motora snage oko 25 kW Ugaona brzina: o = 0,022s ...Luka Nikolić. Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E, 2024