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694 items
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Low-temperature phase transition and magnetic properties of K3YbSi2O7
Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica... Mitric, M., Antic, B., Balanda, M., Rodic, D. & Napijalo, M. L. (1997). J. Phys. Condens. Matter, 9, 4103–4111. Momma, K. & Izumi, F. (2011). J. Appl. Cryst. 44, 1272–1276. Morrison, G., Latshaw, A. M., Spagnuolo, N. R. & Zur Loye, H.-C. (2017). J. Am. Chem. Soc. 139, 14743–14748. O’Keeffe, M. & Hyde ...
... group/software/valist-bond-valence-calcu- lations-listing/. Zhang, F. X., Lang, M., Zhang, J. M., Cheng, Z. Q., Liu, Z. X., Lian, J. & Ewing, R. C. (2012). Phys. Rev. B, 85, 214116. Zhang, F. X., Xiao, H. Y., Lang, M., Zhang, J. M., Zhang, Y., Weber, W. J. & Ewing, R. C. (2013). Phys. Chem. Miner. ...
... Scordari, F., Gilli, G., Zanotti, G. & Catti, M. (1992). Fundamentals of Crystallography, edited by C. Giacovazzo, pp. 387–388. New York: IUCr/Oxford University Press. Gibbs, G. V., Meagher, E. P., Newton, M. D. & Swanson, D. K. (1981). In Structure and Bonding of Crystals, Vol. 1, edited by M. O’Keeffe ...Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović. "Low-temperature phase transition and magnetic properties of K3YbSi2O7" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2021). https://doi.org/10.1107/S2052520621006077
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Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije
Jana S. Stojković (2013-09-25)Mineralne vode još od davnina privlače pažnju ljudi i to kako u pogledu istraživanja iproučavanja, tako i u pogledu njihovog iskorišćavanja. Naročito je važno poznavanjesadržaja mikroelemenata u njima, jer su to komponente njihovog hemijskog sastavakoje ih odvajaju od tzv. „običnih“ malomineralizovanih voda.U ovom radu proučavani su odabrani esencijalni mikroelementi (fluor, bor, litijum,kalijum, stroncijum i silicijum), u mineralnim vodama Srbije, pri čemu je analiziranopreko 130 uzoraka mineralnih voda iz različitih geoloških sredina, to jest hidrogeološkihrejona. Cilj ovog istraživanja bio je ...esencijalni mikroelementi, faktori migracije, zakonomernosti rasprostranjenja, hidrogeohemijski procesi, multivarijantna statistička analiza, mineralne vode Srbije... sledeći oblik: γ Ca 2+ · m Ca 2+ · γ F- 2 · m F- 2 = Ksp,fluorit m Ca 2+ · m F- 2 = 1 γ Ca2+ · γ F- 2 · Ksp,fluorit Konačno, zamenom proračunatih vrednosti za koeficijente aktivnosti jona u prethodnu jednačinu, dobijamo: m Ca 2+ · m F- 2 = 1 0,66 ∙ 0,90 2 · ...
... disertacija 134 0 5 10 15 20 25 30 F (mg/l) 0 10 20 30 40 50 60 70 80 90 100 110 F re k v e n c a Slika 3.14. Histogram koncentracija fluora. 0 5 10 15 20 25 F (mg/l) 0 10 20 30 40 50 60 70 80 90 100 K u m u la ti v n a f re k v e n c a ( % ) Slika 3 ...
... a h em ij sk o g s as ta v a is p it iv an ih m in er al n ih v o d a. T p H C a M g N a K C l H C O 3 S O 4 S i F B L i S r T 1 .0 0 0 p H 0 .3 2 2 1 .0 0 0 C a -0 .3 5 0 -0 .7 0 6 1 .0 0 0 M g -0 .1 6 1 -0 .3 6 7 0 .3 6 8 1 .0 0 0 N a 0 .0 ...Jana S. Stojković. "Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-25)
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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
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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 ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia
Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...... à di Pavia, 20:67-81. Cappellini, E., Welker, F., Pandolfi, L., Ramos-Madrigal, J., Samodova, D., Rüther, P.L., Fotakis, A.K., Lyon, D., Moreno-Mayar, V.J., Bukhsianidze, M., Jersie-Christensen, R.R., Mackie, M., Ginolhac, A., Ferring, R., Tappen, M., Palkopoulou, E., Dickinson, M.R., Stafford Jr ...
... inus hundsheimensis from Bogovina Cave: right M1/M2 HMP-136 in (A) occlusal and (B) lingual views; right M HMP-132 in (C) occlusal and (D) vestibular views; right M HMP-134 in (E) occlusal and (F) vestibular views; right DP4 HMP-130 in (G) occlusal and (H) vestibular views. PALAEO-ELECTRONICA.ORG ...
... (B) vestibular, (C) lingual, (D) mesial and (E) distal views; right p3/p4 HMP-407 in (F) occlusal, (G) vestibular, (H) lingual, (I) mesial and (J) distal views; right p2 HMP-139a in (K) occlusal, (L) vestibular, (M) lingual, (N) mesial, and (O) distal views. PALAEO-ELECTRONICA.ORG 9 The HMP-139a ...Predrag Radović, Miloš Radonjić, Emmanuel Billia. "Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia" in Palaeontologia Electronica, Coquina Press (2020). https://doi.org/10.26879/985
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Preliminary regional landslide susceptibility assessment using limited data
Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...... HER- VÁS, J., DASHWOOD, C. & GUZZETTI, F. (2013b): Tier-based approaches for landslide susceptibility assessment in Europe.– Landslides, 10/5, 529–546. doi: 10.1007/s10346-012-0349-1 GUZZETTI, F., REICHENBACH, P., ARDIZZONE, F., CARDINALI, M. & GAL- LI, M. (2006): Estimating the quality of landslide ...
... 724-y COROMINAS, J., VAN WESTEN, C., FRATTINI, P., CASCINI, L., MALET, J-P., FOTOPOULOU, S., CATANI, F., VAN DEN EECKHAUT, M., MAVROULI, O., AGLIARDI, F., PITILAKIS, K., WINTER, M.G., PASTOR, M., FERLISI, S., TOFANI, V., HERVAS, J. & SMITH, J. T. (2014): Recommendations for the quantitative analysis ...
... performance of landslide susceptibility models. – Engineering Geology, 111/1–4, 62–72. doi: 10.1016/j.enggeo.2009.12.004 GALLI, M., ARDIZZONE, F., CARDINALI, M., GUZZETTI, F., REICHENBACH, P. (2008): Comparing landslide inventory maps.– Geomorphology, 94/3–4, 268– 289. doi: org/10.1016/j.geomorph.2006 ...Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska. "Preliminary regional landslide susceptibility assessment using limited data" in Geologica Croatica , Croatian Geological Society (2019). https://doi.org/10.4154/gc.2019.03
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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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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Malathion-induced inhibition of human plasma cholinesterase studied by the fluorescence spectroscopy method
The in vitro effect of technical grade malathion was assessed via the kinetic parameters of human plasma butyrylcholinesterase (BChE) using N-methylindoxyl acetate as a substrate for BChE. An inhibitor kinetics study demonstrated the existence of a biphasic inhibition curve, indicating high- and low-affinity binding sites of malathion. The IC50 values as calculated from the experimental inhibition curves were 1.33 × 10–9 and 1.48 × 10–5 M for the high- and low-affinity binding sites, respectively; Hill’s analysis gave 1.29 × ...V. M. Pavelkić, K. S. Krinulović, J. Z. Savić, M. A. Ilić. "Malathion-induced inhibition of human plasma cholinesterase studied by the fluorescence spectroscopy method" in Russian Journal of Physical Chemistry A, Pleiades Publishing Ltd (2008). https://doi.org/10.1134/S0036024408050312
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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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Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes
Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre. "Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes" in Geomorphology, Elsevier BV (2022). https://doi.org/10.1016/j.geomorph.2022.108488
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Određivanje parametara smičuće čvrstoće tla primenom statističke metode
Božidar Rudnjanin (2024)Određivanje parametara smičuće čvrstoće tla je od ključne važnosti u geotehničkom inženjerstvu jer utiče na stabilnost i nosivost raznih građevinskih konstrukcija. Ovaj master rad obrađuje temu primene deskriptivne statistike za analizu parametara smičuće čvrstoće tla,čime se obezbeđuje osnov za donošenje odluka o planiranju i izvođenju građevinskih projekata.U prvom delu rada, prikupljaju se relevantni podaci o smičućoj čvrstoći tla iz prethodnih laboratorijskih ispitivanja za trasu buduće brze saobraćajnice Novi Sad - Ruma.Ti podaci uključuju vrednosti smičuće čvrstoće i različite faktore ...... na slici 12. X.w=21,30 [1 — 1,7 * 0,525 * /1 + i]: 2,30 El 28 m Xc„mea„=21,30[1 — 1,7 * 0,525 * F]: 21,73 k—Az, 28 m Xoow=21,30 [1 + 1,7 * 0,525 * /1 + i]: 49,89 FN 28 m 25 Xc„m„„=21,30[1 + 1,7 * 0,525 * F]: 30,55 ' 28 m C (kPa) - V je nepoznat 3.5 |i r3] E 3 •• H a D 2.5 Š ...
... Žemean = 12,49 k—l\zl m m' Dobijeni rezultati karakteristične vrednosti Xc,mean i X-cow kada je nepoznata vrednost koeficijenta varijacije predstavljen je na slici 16. Xow=15,39 [1 — 1,68 * 0,692 * /1 + i]: -274 EN 38 m' Xomea=15,39 [1 — 1,68 * 0,692 * F]: 12,40 7 38 m' 36 n- br oj ...
... predstavljen je na slici 17. Xoow=15,39 [1 — 1,645*0,4* /1 + i]: 5,13% 38 m Xoomean=1 [1 — 1,645 « 0,4 * i]: 13,755% 38 m Xoow=15,39 [1 + 1,645 * 0,4 * /1 + i]: 17,04%% 38 m' Xomean=1 [1 + 1,645 « 0,4 * F]: 25,65%% 38 m' 38 C(kPa) - Vje poznat 6 9 E jud 5 i Š e Vrednostiparametara ...Božidar Rudnjanin. Određivanje parametara smičuće čvrstoće tla primenom statističke metode, 2024
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Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom
Saša D. Bošković (2016-09-09)Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije... kopanje razlaţe na tri komponente (Slika 3.24.): tangentnu (Pt), boĉnu (Pb) i normalnu (Pn). 4 3 2 1 F F m in F m F m in F m a x F m F m in F m a x F m F m in F m a x S f fn fs fs fn 73 Slika 3.24. Sile koje deluju na vedricu pri otkopavanju materijala (P – rezultanta ...
... F F F F M M M F F F M M M e x y z x y z x y z x y z T 1 1 1 1 1 1 2 2 2 2 2 2 . (5.3) Matrica masa bez momenata inercije nosivosti glasi: 112 1 3 1 3 1 3 1 3 10101 0 0 0 1 1 1 0 0 0 1 1 2 ALρ dijag 2 m dijagm e ...
... , M M F F, w , 3x3 reda je k , F F F kkk kkk kkk , 1,2,3ji, , F F F, v u , 2x2 reda je k , F F F kkk kkk kkk yi xi zi i yi xi i i sij e3 2 1 e3 2 1 s es33s32s31 s23s22s21 s13s12s11 yi xi i i i i mij e3 2 1 e3 2 1 m em33m32m31 ...Saša D. Bošković. "Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-09)
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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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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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Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.