Претрага
236 items
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Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija
Krstić Aleksandar, Lolić Aleksandar, Ilić Marija, Mijatović Aleksandar, Zlatanović Snežana, Nedić Zoran, Pavelkić Vesna (2015)Krstić Aleksandar, Lolić Aleksandar, Ilić Marija, Mijatović Aleksandar, Zlatanović Snežana, Nedić Zoran, Pavelkić Vesna. "Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija" in 52. savetovanje Srpskog hemijskog društva, мaj 2015, Novi Sad, Srbija, Abstract AH P 5: Srpsko hemijsko društvo (2015): 16
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Determination of oxygen surface groups on biochars using Boehm-titration method
Krstić D. Aleksandar, Lolić Đ. Aleksandar, Ilić Marija, Mijatović Aleksandar, Zlatanović J. Snežana, Nedić P. Zoran, Pavelkić M. Vesna (2015)Krstić D. Aleksandar, Lolić Đ. Aleksandar, Ilić Marija, Mijatović Aleksandar, Zlatanović J. Snežana, Nedić P. Zoran, Pavelkić M. Vesna. "Determination of oxygen surface groups on biochars using Boehm-titration method" in 52. savetovanje Srpskog hemijskog društva, Belgrade, Serbia (2015): 16
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Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija
Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić (2015)Biougalj se dobija pirolizom iz organskog otpada. Smatra se ,,modifikatorom'' zemljišta i koristi se kao đubrivo i kao rezervoar za skladištenje ugljenika. Kvantifikacija funkcionalih grupa je važna zbog hemijske reaktivnosti biougljeva koji imaju uticaj na svojstva zemljišta. U istraživanju su korišćena 3 uzorka biouglja različitog porekla i jedan referentni, aktivni ugalj. Sadržaj kiselih funkcionalnih grupa je određivan titracijom po Boehm-u na dva načina: uvođenje N2 tokom titracije i tretman sa BaCl2. Optimizovan je način pripreme tri Boehm ova rastvora ...... 2023-06-13 17:28:30 Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić Дигитални репозиторијум Рударско-геолошког ...
... Београду [ДР РГФ] Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija | Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić | 52. savetovanja Srpskog hemijskog društva ...
... Odredivanje sadrzaja kiselih funkcionalnih grupa na povréini biougljeva primenom Boehm-ovih titracija Aleksandar D. Krstié, Aleksandar D. Lolié, Marija A. li, Aleksandar M. Mijatovi¢*, ‘Snezana J. Zlatanovi¢'*, Zoran P. Nedi¢***, Vesna M. Pavelki¢**** Hemijski fakultet, Univerzitet u Beogradu, ...Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić. "Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija" in 52. savetovanja Srpskog hemijskog društva, Srpsko hemijsko društvo (2015)
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Uniaxial compressive strength test before and after standard fire test on rock mass
Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)... test before and after standard fire test on rock mass Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду ...
... before and after standard fire test on rock mass | Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović | Fifth symposium of the Macedonian Association for Geotechnics, Ohrid, North ...
... after standard fire test on rock mass Stefan Mitrovića , Goran Todorovića , Bojan Kostićb , Milica Mirković Marjanovićc, Nikola Božovićc , Marija Krstićc, Aleksandar Erićd, Radovan Gospavića , Snežana Ilićc , Aleksandar Kijanovićc a Faculty of Civil Engineering, University of Belgrade ...Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović. "Uniaxial compressive strength test before and after standard fire test on rock mass" in Fifth symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 23-25. 06. 2022, Macedonian Association for Geotechnics (2022)
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Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations
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... 513–531. Kräutner H.G. & Krstić B. 2002: Alpine and Pre-Alpine structural units within Southern Carpathians and the Eastern Balkanides. In: Proceedings of XVII Congress of Carpathian–Balkan Geo- logical Association. Geologica Carpathica 53 (Special Issue). Kräutner H.G. & Krstić B. 2003: Geological Map ...
... 1970). The metamorphic core of the mountains belongs to the Ser- bo-Macedonian and Supragetic Unit of the Dacia tectonic Mega-Unit (Kräutner & Krstić 2002, 2003) and thus repre- sents a key area where the contact between these two units can be studied at the surface in their northern segments. However ...
... upper- most nappe of the Dacia Mega-Unit nappe system, predomi- nantly comprised of low-grade greenschist facies metamorphic rocks (Fig. 1b, Kräutner & Krstić 2002; Iancu et al. 2005a; Schmid et al. 2008). According to the existing studies, both the Serbo-Macedo- nian and Supragetic Unit originate from ...Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković . "Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/https://doi.org/10.31577/GeolCarp.72.5.3
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The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
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 ...... Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] The influence of Al3+ion on porcine pepsin activityin vitro | Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić | Journal of Enzyme ...
... • 3+ • • • •. B •. The influence of A' ion on porcine pepsin activity 2? TfO VESNA M. PAVELKIC!, KRISTINA R. GOPCEVIC?, DANIJELA Z. KRSTIC?, & MARIJA A. ILIC? lDepartmem of Physical Chemistry, Vinca-pInstitute of Nuclear Science, POB 522, 11001 Belgrade, Serbia, ŽSchool of Medicine, University ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095
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Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)
Miloš Radonjić (2020)This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides... of Serbia is classically interpreted as the Kučaj-Zvonce flysch (MASLAREVIĆ & KRSTIĆ, 1987a). In addition to previously documented sedimentological data from several localities in Ser- bia (e.g. KRSTIĆ, 1984; KRSTIĆ et al., 2004, 2005), the concept of extrabasinal turbidites (ZAVALA & ARCURI, 2016) ...
... Tabcd and Tbcde intervals as a general trend for this unit (KRSTIĆ et al., 2008). Among other sedimentological constituents of the flysch, Lower Carboniferous limestone olistosromes of cm to m dimensions were discovered (MASLAREVIĆ & KRSTIĆ, 1987b). The Kučaj-Zvonce flysch is unconformably overlain ...
... to Early Devonian fine-grained graptolite schists (KRSTIĆ & MASLAREVIĆ, 1990). The Devonian (Late Lochkovian to Late Frasnian) Pre-flysch is defined as channeled slope facies with the addition of hemipelagic shales, cherts and limestones (KRSTIĆ et al., 2004) which terminates with dolo- mitic limestones ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
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Petrological and geochemical studies of lignite from the Tamnava West field, Kolubara basin (Serbia)
Milena Pajić, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Vladimir Krstić, Dragana Životić (2021)... of lignite from the Tamnava West field, Kolubara basin (Serbia) Milena Pajić, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Vladimir Krstić, Dragana Životić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Petrological and geochemical studies of ...
... lignite from the Tamnava West field, Kolubara basin (Serbia) | Milena Pajić, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Vladimir Krstić, Dragana Životić | 72nd Annual Meeting of the International Commitee for Coal and Organic Petrology (ICCP), The Prague, Chech Republic, 19th – 25 th ...
... FROM THE TAMNAVA WEST FIELD, KOLUBARA BASIN (SERBIA) Р и о Milena Pajić!, Reinhard F. Sachsenhofer", Achim BechteF, Ksenija Stojanović”, Vladimir Krstići, Dragana Životić“ ! Zijin Copper, Svetog Save 2, 19250 Majdanpek, Serbia * Department 4ngewandte беомлвхепусћаћеп инпа Сеорћухћк, Мотапитуегхна! ...Milena Pajić, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Vladimir Krstić, Dragana Životić. "Petrological and geochemical studies of lignite from the Tamnava West field, Kolubara basin (Serbia)" in 72nd Annual Meeting of the International Commitee for Coal and Organic Petrology (ICCP), The Prague, Chech Republic, 19th – 25 th September, ICCP (2021)
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Karakteristike rudnih minerala područja Veluče
Saša Krstić (1993)Saša Krstić. Karakteristike rudnih minerala područja Veluče, Beograd:Rudarsko-geološki fakultet, 1993
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Petrologija kvarcita Kaone i njihov značaj kao mineralne sirovine
Krstić Slađana D. (2016)Krstić Slađana D.. Petrologija kvarcita Kaone i njihov značaj kao mineralne sirovine, Beograd:Rudarsko-geološki fakultet, 2016
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Stratigrafija starijeg paleozoika (ordovicium, devon) između Resave i Nišave, istočna Srbija
Stanislav Krstić (1982)Stanislav Krstić. Stratigrafija starijeg paleozoika (ordovicium, devon) između Resave i Nišave, istočna Srbija, Beograd:Rudarsko Geološki Fakultet, 1982
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Biostratigrafija, taksonomija i filogenija cyprida (ostrakode) kongeriskih slojeva okoline Beograda
Nadežda Krstić (1967)Nadežda Krstić. Biostratigrafija, taksonomija i filogenija cyprida (ostrakode) kongeriskih slojeva okoline Beograda, Beograd:Rudarsko Geološki Fakultet, 1967
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Simulacioni modeli tehnologije rada bagera i odlagača na površinskim kopovima uglja
Vojislav Krstić (1998)Vojislav Krstić. Simulacioni modeli tehnologije rada bagera i odlagača na površinskim kopovima uglja, Beograd:Rudarsko-geološki fakultet, 1998
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Lower Miocene terrestrial sediments from the Vrdnik Formation near Beočin (Fruška Gora mt., Serbia) – a preliminary geochemical data.
Rundić Ljupko, Đorđević Dragan, Stanković Maja, Đorđević Milan, Krstić Nenad. "Lower Miocene terrestrial sediments from the Vrdnik Formation near Beočin (Fruška Gora mt., Serbia) – a preliminary geochemical data." in 5th International Workshop on Neogene of Central and SE Europe, Varna, Bugarska:BAN, Bugarska (2013): 53-54
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Petrogenesis and tectonic inferences from the study of the Mt. Cer pluton (West Serbia)
Koroneos Antonis, Poli Giampiero, Cvetković Vladica, Christofides George, Krstić D., Pecskay Zoltan (2011)Koroneos Antonis, Poli Giampiero, Cvetković Vladica, Christofides George, Krstić D., Pecskay Zoltan. "Petrogenesis and tectonic inferences from the study of the Mt. Cer pluton (West Serbia)" in Geological Magazine 148 no. 1, Cambridge, UK:Cambridge University Press (2011): 89-111. https://doi.org/10.1017/S0016756810000476
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Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation
Nešić Jelena, Manojlović Dragan D., Anđelković Ivan, Dojčinović Biljana, Vulić Predrag, Krstić Jugoslav, Roglić Goran (2013)Nešić Jelena, Manojlović Dragan D., Anđelković Ivan, Dojčinović Biljana, Vulić Predrag, Krstić Jugoslav, Roglić Goran. "Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation" in Journal of Molecular Catalysis A: Chemical 378, Amsterdam:Elsevier (2013): 67-75. https://doi.org/10.1016/j.molcata.2013.05.018
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Energy Resources in the Republic of Serbia: Development Policy
Jovančić Predrag, Kolonja Božo, Ignjatović Dragan, Tanasijević Miloš, Madžarević Aleksandar, Krstić Vojislav (2014)Jovančić Predrag, Kolonja Božo, Ignjatović Dragan, Tanasijević Miloš, Madžarević Aleksandar, Krstić Vojislav. "Energy Resources in the Republic of Serbia: Development Policy" in Journal of Energy Sources, Part B: Economics, Planning and Policy, :Taylor & Francis (2014). https://doi.org/DOI: 10.1080/15567249.2014.896
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Korelacija između sadržaja i iskorišćenja bakra u flotacijskom koncentratu iz pogona Veliki Krivelj u funkciji finoće mlevenja
Jovanović Ivana, Todorović Dejan, Miljanović Igor, Urošević Daniela, Magdalinović Srđana, Krstić Slađana (2013)Jovanović Ivana, Todorović Dejan, Miljanović Igor, Urošević Daniela, Magdalinović Srđana, Krstić Slađana. "Korelacija između sadržaja i iskorišćenja bakra u flotacijskom koncentratu iz pogona Veliki Krivelj u funkciji finoće mlevenja" in Bakar 38 no. 2, -:Institut za rudarstvo i metalurgiju Bor (2013): 45-54. https://doi.org/-
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Fe doped TiO2 prepared by microwave-assisted hydrothermal process for removal of As(III) and As(V) from water
Anđelković Ivan B, Stanković Dalibor M, Nešić Jelena, Krstić Jugoslav B, Vulić Predrag, Manojlović Dragan D, Roglić Goran M (2014)Anđelković Ivan B, Stanković Dalibor M, Nešić Jelena, Krstić Jugoslav B, Vulić Predrag, Manojlović Dragan D, Roglić Goran M. "Fe doped TiO2 prepared by microwave-assisted hydrothermal process for removal of As(III) and As(V) from water" in Industrial and Engineering Chemistry Research 53 no. 27, Washington:American Chemical Society (2014): 10841-10848. https://doi.org/10.1021/ie500849r
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Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process
Nešic Jelena, Manojlović Dragan D, Jović Milica S, Dojčinović Biljana P, Vulić Predrag, Krstić Jugoslav B, Roglić Goran M (2014)Nešic Jelena, Manojlović Dragan D, Jović Milica S, Dojčinović Biljana P, Vulić Predrag, Krstić Jugoslav B, Roglić Goran M. "Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process" in Journal of the Serbian Chemical Society 79 no. 8, Belgrade:Serbian Chemical Society (2014): 977-991. https://doi.org/10.2298/JSC131001143N