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536 items
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Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes
Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...... (Fig. 6.). The slop of the line presents the s value, which represents degree of affinity of the complex towards the nucleophiles. The s val- ues for [(TLtBu)PdCl]+ complex is 0.47 and for [Pd(tpdm)Cl]+ complex is 0.51. These values are lower than the value of the standard sub- strate trans-[Pt(py)2Cl2] ...
... complexes. The temperature dependence of the second-order rate con- stants was studied for the reactions of [(TLtBu)PdCl]+ complex with I� and pyridine and for the [Pd(tpdm)Cl]+ complex with I�, Br�, pyridine and DMSO. The observed pseudo-first-order rate constants, kobs, were calculated as the average ...
... complexes. The temperature dependence of the second-order rate con- stants was studied for the reactions of [(TL®")PdCl]* complex with I- and pyridine and for the [Pd(tpdm)Cl]* complex with I-, Br-, pyridine and DMSO. The observed pseudo-first-order rate constants, kops, were calculated as the average ...Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić. "Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes" in Inorganica Chimica Acta, Elsevier BV (2011). https://doi.org/10.1016/j.ica.2011.11.031
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DNA/BSA interactions and cytotoxic studies of tetradentate N,N,O,O Schiff base copper(II) complexes
Aleksandar Mijatović, Angelina Caković, Aleksandar Lolić, Snezana Sretenović, Marko Živanović, Dragana Seklić, Jovana Bogojeski, Biljana Petrović (2023)Three Schiff base Cu(II) complexes, (N,N’-bis(acetylacetone)propylenediimine)copper(II) complex, [Cu(acac2pn)] (1), (N,N'-bis-(benzoylacetone)propylenediimine)copper(II) complex, [Cu(phacac2pn)] (2) and (N,N’-bis-(trifluoroacetylacetone)propylenediimine)copper(II) complex, [Cu(tfacac2pn)] (3), were used to investigate the interactions with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) using the electronic absorption and spectroscopic fluorescence methods. UV-Vis absorption studies showed that studied complexes interact with DNA molecule and exhibit moderate binding affinity. Fluorescence studies of complexes 1-3 also showed a possibility for DNA intercalation as well as a relatively high binding ability ...Aleksandar Mijatović, Angelina Caković, Aleksandar Lolić, Snezana Sretenović, Marko Živanović, Dragana Seklić, Jovana Bogojeski, Biljana Petrović. "DNA/BSA interactions and cytotoxic studies of tetradentate N,N,O,O Schiff base copper(II) complexes" in Journal of the Serbian Chemical Society (2023). https://doi.org/10.2298/JSC230614063M
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Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4
Lidija Radovanović, Željko Radovanović, Aleksandar Kremenović, Bojana Simović, Milica V. Vasić, Jelena Rogan (2022)In recent years, thermal decomposition studies of transition metal complexes with benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–gel treatment, thermolysis is faster, more efficient ...Lidija Radovanović, Željko Radovanović, Aleksandar Kremenović, Bojana Simović, Milica V. Vasić, Jelena Rogan. "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4 " in XIV Conference of chemists, technologists and environmentalists of Republic of Srpska, Academy of sciences and arts of the Republic of Srpska, Banja Luka, Republic of Srpska, B&H, October 21st-22nd, 2022, University in Banjaluka, Faculty of Technology (2022)
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Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7
Part of E-80 highway that passes through Serbia (from the city of Nis to the administrative border Merdare) is 77 km long. The highway is divided into two sections: the first from Nis to Plocnik (39.4 km long) and the second from Plocnik to the administrative border with Kosovo. The route is designed through a typical plain and hilly terrain in which different geological units are dominant: crystalline schists, neogene sediments of foothills and quaternary sediments in the valley ...... terrain is divided in two parts: a younger Neogene complex downstream from the city of Prokuplje (km: 0-17.2) and an older Neogene complex upstream from Prokuplje (km: 23.5-39.4). They are separated by crystalline metamorphic complex of Prokuplje vicinity. Figure 3. Characteristic e ...
... cross-section of the crystalline schist complex The central part of the highway route is built of crystalline schist complex (Gs, Ga, Gm, M, Q, ) of different quality with variable height of weathering zone (Figure 6). In the structure of this metamorphic complex, fine grained gneisses dominate ...
... (al, t1) Crystalline schist complex (Gs, Ga, Gm, M, Q) Prokuplјe - Plocnik 23.5- 39.4 Alluvial, proluvial and river- terraced plateaus (al, al-pr, pr, t1, t2) Quaternary and Neogene hilly terrains (dl-pr, dl, Pl, M-Pl, M) Cretaceous flysch complex (pr, K) Neogene hilly terrains ...Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković. "Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7" in Proceedings of the XVII European Conference of Soil Mechanics and Geotechnical Engineering ECSMGE-2019, Reykjavik, Iceland, 1-6. 09. 2019., ISSMGE, ECSMGE-2019 (2019). https://doi.org/10.32075/17ECSMGE-2019-0393
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Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2
Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...... is given in Fig. 6B. At low metal complex concentrations, data can be fitted to a straight line, but there is a clear deviation at higher concentrations. Thus, the ruthenium metal complex causes both a dynamic and static quenching. In other words, the complex formation seen in mass spectrometry ...
... enzyme than the corres- ponding Pt-complex. The inhibition of enzyme activity by [PtCl4(bipy)] revealed that at least a transient interaction of this complex with PLA2 should occur. As stated above, this is mostly an interaction with the enzyme–substrate complex as given by the uncompetitive inhibition ...
... type of interaction between the Ru(III) complex and the enzyme is a combination of pure collision and complex formation indicating apparently only one class of binding sites on the enzyme for [RuCl2(bipy)2]Cl. The nature of interaction of the platinum complex, as well as the mechanism of inhibition ...Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković. "Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2" in Metallomics, Oxford University Press (OUP) (2011). https://doi.org/10.1039/c1mt00088h
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Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP
Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv... the complex hydrogeological system: A case study HPP Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hydraulic impact of pressure transients from water conveyance tunnel on the complex hyd ...
... Volume 644, November 2024, 132068 ELSEVIER Research papers Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP Pirot, Serbia Igor Jemcov ”, Maja Todorović ', Aleksandar Jemcov P, Marina Ćuk Đurović ? 2, i Show more ...
... ng of groundwater dynamics, pressure transient phenomena, and hydrogeological characterization during HPP operation. The study highlights the complex and spatially diverse hydrogeological environment, emphasizing the varying reactivity of pore pressure during HPP operation, particularly concerning ...Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović. "Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP" in Journal of Hydrology, Pirot, 2024, Elsevier BV (2024). https://doi.org/10.1016/j.jhydrol.2024.132068
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Estimating hydraulic parameters for the complex hydrodynamic models
Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions. This method of calibration and estimation of hydraulic parameters requires an extensive knowledge and experience of experts, but whether the resulting solution includes an optimal set of parameters still remains an open question. An optimization method founded upon the Gauss-Marquardt-Levenberg algorithm, along with PEST software based on that algorithm, introduces automation of model calibration with regularization, which substantially ...Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin. "Estimating hydraulic parameters for the complex hydrodynamic models" in Mining and Metallurgy Engineering Bor, Centre for Evaluation in Education and Science (CEON/CEES) (2018). https://doi.org/10.5937/mmeb1704029P
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Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts.
... of dextral wrenching during or immediately after the emplacement of the basalt can be found. Foliations in both the surrounding rocks and the magmatic rocks are very steep—cubvertical, subparallel to thc strike of the mylonitic zone (NNW-SSE), indicating that the basalt was most likely emplaced ...Dejan Prelević, Ana Mladenović, Violeta Gajić, Milena Dunčić, Blažo Boev. "Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts." in Fifth Congress of Geologists of the Republic of North Macedonia, Macedonian Geological Society (2024)
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Selective separation processes of complex auriferous minerals
Tomanec Rudolf, Lazić Predrag (2010)Tomanec Rudolf, Lazić Predrag. "Selective separation processes of complex auriferous minerals" in Proceedings of Workshop – Vyskum v oblasti otpadu jako nahrady primarnich surovinovych zdroju, Ostrava:VŠB-Technical University of Ostrava (2010): 135-142
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Friction memory effect in complex dynamics of earthquake model
Kostić Srđan, Franović Igor, Todorović Kristina, Vasović Nebojša. "Friction memory effect in complex dynamics of earthquake model" in Nonlinear Dynamics 73 no. 3, Berlin:Springer (2013): 1933-1943
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Influence of Failure Mode Level of Complex Technical System with Serial Connection
Savković Snežana, Jovančić Predrag, Tanasijević Miloš. "Influence of Failure Mode Level of Complex Technical System with Serial Connection" in 21th Annual International Conference Composites/Nano Engineering ICCE-21 1, Tenerife, Spain:University of New Orleans (2013): 717-718
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Water Management Failure under Complex Hydrogeological Conditions in the Kolubara District, Serbia
Dokmanović Petar, Nikić Zoran, Krunić Olivera, Petrović Branislav. "Water Management Failure under Complex Hydrogeological Conditions in the Kolubara District, Serbia" in Hydrogeology Journal 20 no. 6, USA:Springer (2012): 1169-1175
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Radiometric K/Ar data as evidence of the geodynamic evolution of the Zdraljica Ophiolitic Complex (central Serbia)
Resimić-Sarić Kristina, Cvetković Vladica, Balogh Kadosa. "Radiometric K/Ar data as evidence of the geodynamic evolution of the Zdraljica Ophiolitic Complex (central Serbia)" in Annales Géologiques de la Péninsule Balkanique no. 66, Beograd: Rudarsko-geološki fakultet (2005): 73-79
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Gemstone deposits of Lece volcanic complex (South Serbia)
Miladinović Zoran, Ilić Miloje, Simić Vladimir. "Gemstone deposits of Lece volcanic complex (South Serbia)" in Geologica Balcanica / XIX Congress of Carpathian-Balkan Geological Association, Thessaloniki, Greece, 23-26th September 01-Feb no. 39, Sofia, Bulgaria:Akademichno Izdatelstvo Prof. Marin Drinov, Bulgarian Academy of Sciences (2010): 253-254
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A reinterpretation of the geological map of northwestern part of Lece Volcanic Complex
Kostić Bojan, Šarić Kristina, Cvetković Vladica, Krstekanić Nemanja, Pantelić Nemanja, Bosić Dragana (2017)Kostić Bojan, Šarić Kristina, Cvetković Vladica, Krstekanić Nemanja, Pantelić Nemanja, Bosić Dragana. "A reinterpretation of the geological map of northwestern part of Lece Volcanic Complex" in 13th Workshop on Alpine Geological Studies, Zlatibor Mts, Beograd:University of Belgrade-Faculty of mining and geology (2017): 55
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Hydrodynamic modeling of a complex karst-alluvial aquifer: case study of Prijedor Groundwater Source, Republic of Srpska, Bosnia and Herzegovina
Polomčić Dušan, Dragišić Veselin, Živanović Vladimir. "Hydrodynamic modeling of a complex karst-alluvial aquifer: case study of Prijedor Groundwater Source, Republic of Srpska, Bosnia and Herzegovina" in Acta Carsologica (2013): 93-107
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Complex dynamics of spring-block earthquake model under periodic parameter perturbations.
Kostić Srđan, Vasović Nebojša, Franović Igor, Todorović Kristina. "Complex dynamics of spring-block earthquake model under periodic parameter perturbations." in Journal of Computational and Nonlinear Dynamics 9 no. 3, Njujork:American Society of Mechanical Engineers (ASME) (2014): 031019-1-031019-10
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Dielectric and ferroelectric properties of BST ceramics obtained by hydrothermally assisted complex polymerization method
Ćirković Jovana, Vojisavljević Katarina, Nikolić Nenad, Vulić Predrag, Branković Zorica, Srećković Tatjana, Branković Goran. (2015)Ćirković Jovana, Vojisavljević Katarina, Nikolić Nenad, Vulić Predrag, Branković Zorica, Srećković Tatjana, Branković Goran.. "Dielectric and ferroelectric properties of BST ceramics obtained by hydrothermally assisted complex polymerization method" in Ceramics international 9 no. 41, :Elsevier (2015): 11306-11313. https://doi.org/10.1016/j.ceramint.2015.05.088
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Complex Dynamics of landslides with Time Delay Under External Seismic Triggering Effect
Kostić Srđan, Vasović Nebojša, Jevremović Dragutin, Sunarić Duško, Franović Igor, Todorović Kristina (2014)Kostić Srđan, Vasović Nebojša, Jevremović Dragutin, Sunarić Duško, Franović Igor, Todorović Kristina. "Complex Dynamics of landslides with Time Delay Under External Seismic Triggering Effect" in XII Congres IAEG, Torino, Italy: (2014)
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Using Complex Geophysical Data for Determining Tectonic Setting of Čačak – Kraljevo Basin and its Basement (Serbia)
Mladenović Ana, Petrović Dragana, Radivojević Maša. "Using Complex Geophysical Data for Determining Tectonic Setting of Čačak – Kraljevo Basin and its Basement (Serbia)" in Proceedings of EAGE&SEG Research Workshop, Trieste, Italy:SEG, EAGE (2011). https://doi.org/10.3997/2214-4609.201402458