FFH scientific research papers database
FFH database search (1991-2022):
Kaninski, M P M; Maksić, A D; Stojić, D. Lj.; Miljanić, S S
Ionic activators in the electrolytic production of hydrogen - Cost reduction-analysis of the cathode Journal Article
In: Journal of Power Sources, vol. 131, no. 1-2, pp. 107-111, 2004.
@article{Kaninski2004107,
title = {Ionic activators in the electrolytic production of hydrogen - Cost reduction-analysis of the cathode},
author = {M P M Kaninski and A D Maksić and D.Lj. Stojić and S S Miljanić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2342634442&doi=10.1016%2fj.jpowsour.2004.01.005&partnerID=40&md5=11af5fea0521166391c4aa3283f49823},
doi = {10.1016/j.jpowsour.2004.01.005},
year = {2004},
date = {2004-01-01},
journal = {Journal of Power Sources},
volume = {131},
number = {1-2},
pages = {107-111},
abstract = {As recent technology progress makes hydrogen a realistic long-term energy option with little or no pollution, development of new methods for its production and improvement of conventional technology is important. In spite of the fact that, among overall world technologies for hydrogen production today, only 4% is produced by electrolysis, this is the most promising method in the future as a consequence of the high existing water supply. The limitation factor for its use on the large scale is well known-high energy consumption. In this work, methods for increasing efficiency and lowering the energy consumption in the electrolytic hydrogen production are presented. The stability of ionic activators, as an indicator of capital cost, are also shown, as are an analysis of composition, structure and morphology characteristic of cathode, formed in the presence as ionic activators. © 2004 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Vukojević, V; Yakovleva, T; Terenius, L; Pramanik, A; Bakalkin, G
Denaturation of dsDNA by p53: Fluorescence correlation spectroscopy study Journal Article
In: Biochemical and Biophysical Research Communications, vol. 316, no. 4, pp. 1150-1155, 2004.
@article{Vukojević20041150,
title = {Denaturation of dsDNA by p53: Fluorescence correlation spectroscopy study},
author = {V Vukojević and T Yakovleva and L Terenius and A Pramanik and G Bakalkin},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1642275403&doi=10.1016%2fj.bbrc.2004.02.167&partnerID=40&md5=f802a2acc9686701ea84a3500aabb2ea},
doi = {10.1016/j.bbrc.2004.02.167},
year = {2004},
date = {2004-01-01},
journal = {Biochemical and Biophysical Research Communications},
volume = {316},
number = {4},
pages = {1150-1155},
abstract = {p53 activates transcription through interaction with specific DNA sequences in gene promoters. It also regulates DNA replication, recombination, and repair apparently through interactions with DNA intermediates of these reactions. Biochemical activities relevant for these functions of p53 include binding to the ends and internal segments of single-stranded DNA molecules, catalysis of DNA renaturation, and strand exchange. We report a novel activity of p53, its ability to denature double-stranded DNA molecules aggregated by basic peptides. Stable complexes of coiled single-stranded DNA molecules with basic peptides are formed in this reaction. Thus, complementary to the ability to catalyze DNA renaturation, p53 denatures double-stranded DNA when the latter reaction is thermodynamically favorable. This p53 activity, along with its ability to interact physically with DNA helicases, may be relevant for resolving double-stranded DNA intermediates and inhibition of DNA recombination, which is critical for guarding of the genome. © 2004 Elsevier Inc. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Micic, M; Radotic, K; Jeremic, M; Djikanovic, D; Kämmer, S B
Study of the lignin model compound supramolecular structure by combination of near-field scanning optical microscopy and atomic force microscopy Journal Article
In: Colloids and Surfaces B: Biointerfaces, vol. 34, no. 1, pp. 33-40, 2004.
@article{Micic200433,
title = {Study of the lignin model compound supramolecular structure by combination of near-field scanning optical microscopy and atomic force microscopy},
author = {M Micic and K Radotic and M Jeremic and D Djikanovic and S B Kämmer},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1242276299&doi=10.1016%2fj.colsurfb.2003.10.018&partnerID=40&md5=5e65808c56a928cb184f645d93478aa7},
doi = {10.1016/j.colsurfb.2003.10.018},
year = {2004},
date = {2004-01-01},
journal = {Colloids and Surfaces B: Biointerfaces},
volume = {34},
number = {1},
pages = {33-40},
abstract = {In this paper, we present a nanoscale study of the supramolecular structure of the dehydrogenate polymer (ZL-DHP) lignin model compound. The combination of near-field scanning optical microscopy (NSOM or SNOM) and atomic force microscopy (AFM) has been utilized to explore physicochemical properties of the lignin model compound on a scale ranging from individual macromolecules to globular supramolecular assemblies. By utilizing NSOM in transmission mode, the optical inhomogeneity in the lignin supramolecular structure has been observed for the first time. In particular, the transmission-mode NSOM images reveal a combination of hollow and layered supramolecular globular structure in the lignin model compound. Through the paired use of TappingMode™ and pulsed-mode AFM, we have also confirmed the existence of regions with different rheological properties on the single lignin model compound supramolecular assembly. © 2003 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nikolić, N; Veselinović, D; Vladimirov, S; Karljiković-Rajić, K; Lingeman, H
In: Journal of Pharmaceutical and Biomedical Analysis, vol. 34, no. 2, pp. 285-293, 2004.
@article{Nikolić2004285,
title = {Chiral ligand-exchange chromatography as the screening method for proposed modifications in exametazime synthesis to enhance diastereoselectivity},
author = {N Nikolić and D Veselinović and S Vladimirov and K Karljiković-Rajić and H Lingeman},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0842287434&doi=10.1016%2fS0731-7085%2803%2900551-X&partnerID=40&md5=575b332b7f31ddc6f99a6b46c010c089},
doi = {10.1016/S0731-7085(03)00551-X},
year = {2004},
date = {2004-01-01},
journal = {Journal of Pharmaceutical and Biomedical Analysis},
volume = {34},
number = {2},
pages = {285-293},
abstract = {99mTc(V)-d,l-HM-PAO complex is well-known radiopharmaceutical for regional cerebral blood flow imaging. The proposed modifications in exametazime, hexamethylpropyleneamine oxime (HM-PAO) (4,8-diaza-3,6,6,9- tetramethylundecane-2,10-dione bisoxime) synthesis, for reduction of intermediary reactant diiminebisoxime (DI) (4,8-diaza-3,6,6,9- tetramethylundecane-3,8-diene-2,10-dione bisoxime) concerned two reductants (NaBH4 and KBH4), two solvents (ethanol and 2-propanol), and three mole ratios of reactant/reductants (1:1, 1:1.5, and 1:2). The simultaneous analysis of diastereo-enantiomeric HM-PAO content, as well as the content of starting DI, in different reduction mixtures were performed using chiral ligand-exchange chromatography (CLEC). The separation of the samples of investigated reduction mixtures, obtained in the second step of HM-PAO synthesis, has been accomplished by using an achiral sorbent (RP-18) and a chiral mobile phase (CMP) containing copper(II) complex with N,N-dimethyl-L-phenylalanine (L-DM-PhA) as initial complex for CLEC. With 12 different reduction conditions, the obtained ratios of diastereoisomers d,l-HM-PAO: meso-HM-PAO varied from 69.2:30.8 to 15.9:84.1, in comparison to the reduction in routine synthesis of HM-PAO which gives an equal mixture of diastereoisomers. The ternary mixed complexes formation recorded spectrophotometrically on addition of HM-PAO or DI to the mobile phase with binary complex Cu(L-DM-PhA)2, due to the evidence of bathochromic shift of 46nm for λmax with significant difference in absorptivity contributes to separation mechanism. © 2003 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Begović, N; Marković, Z; Anić, S; Kolar-Anić, L
Computational investigation of HIO and HIO 2 isomers Journal Article
In: Journal of Physical Chemistry A, vol. 108, no. 4, pp. 651-657, 2004.
@article{Begović2004651,
title = {Computational investigation of HIO and HIO 2 isomers},
author = {N Begović and Z Marković and S Anić and L Kolar-Anić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0442295464&doi=10.1021%2fjp034492o&partnerID=40&md5=e4f691a5934358b415995357a501157a},
doi = {10.1021/jp034492o},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physical Chemistry A},
volume = {108},
number = {4},
pages = {651-657},
abstract = {The theoretical study of hypoiodous and iodous acid isomers, which can be written in the common form HIO n (n = 1,2), is presented. For this purpose, several basis sets and several computational methods are tested. The best fitting with the values known in the literature is achieved using density functional theory at the level of Gill96 exchange and Perdew-Wang91 correlation functional (G96PW91) method, with Lanl2DZ basis set augmented with p and d diffuse and polarization functions for oxygen, relativistic effective core potential of Hay and Wadt combined with Lanl2DZ basis set augmented with diffuse (s and p) and polarization (d and f) functions for iodine, and 6-311++G(3df,3pd) basis set for hydrogen. Using this method for the calculation of bond lengths, vibrations, and energies, the mentioned species are analyzed. The justification of the calculated values is performed by thermochemical calculations of enthalpy of formation of mentioned species. We found that between hypoiodous acid isomers HOI is more stable then HIO, and that between iodous acid isomers HOIO is the most stable isomer. Therefore, they are the most probable ones in the reactions where they take part. All calculations are performed for the species in the gaseous phase. As far as we know, these calculations give the first such information for iodous acid isomers and HIO.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Stanisavljev, D R; Djordjević, A R; Likar-Smiljanić, V D
Microwave driven Bray-Liebhafsky Oscillatory reaction Journal Article
In: ChemPhysChem, vol. 5, no. 1, pp. 140-144, 2004.
@article{Stanisavljev2004140,
title = {Microwave driven Bray-Liebhafsky Oscillatory reaction},
author = {D R Stanisavljev and A R Djordjević and V D Likar-Smiljanić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2442612541&doi=10.1002%2fcphc.200300899&partnerID=40&md5=2d6dcff5e8191f1b37cfcbfba9c6600b},
doi = {10.1002/cphc.200300899},
year = {2004},
date = {2004-01-01},
journal = {ChemPhysChem},
volume = {5},
number = {1},
pages = {140-144},
abstract = {Microwaves alter dynamics: Oscillatory reactions are important in controlling processes in living organisms, in the same way that a clock controls processes in modern computers. Investigations of the microwave heating of the Bray-Liebhafsky oscillatory reaction revealed nonthermal effects by the favoring of monotonic dynamics (see graphic). The important role of bulk water is discussed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Minić, D; Jakovljević, G; Sladić, D; Andjelković, K
In: Materials Science Forum, vol. 453-454, pp. 567-572, 2004.
@article{Minić2004567,
title = {Investigation of thermal stability and kinetic studies of transition metal complexes with the condensation product of 2,6-diacetylpyridine and semioxamazide},
author = {D Minić and G Jakovljević and D Sladić and K Andjelković},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142718316&partnerID=40&md5=e8f5392d4308f1b00871185fc8a6a1b3},
year = {2004},
date = {2004-01-01},
journal = {Materials Science Forum},
volume = {453-454},
pages = {567-572},
abstract = {Thermal behavior of Cu(II), U(VI), Mn(II) and Ni(II) complexes with 2′,2‴-(2,6-pyridinediyldiethylidyne)dioxamohydrazide was studied by DSC and TG analysis, in the temperature range of 20-600°C in a stream of nitrogen. Depending on' the structure of complexes, thermal degradation occurred mostly in the range of 200-400°C, preceded by a loss of crystal and coordinated solvent if present. Kinetic processes of degradation were studied by analysis of DSC and TG curves recorded at one or more heating rates. Based on activation energies, determined in this way, thermodynamic parameters of activated complexes were also determined for U(VI) and Mn(II) complexes. Mechanisms of degradation processes were established using the obtained data.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Ražić, S; Holclajtner-Antunović, I; Todorović, M
The influence of ethanol addition on the spatial emission distribution of traces in a vertical argon stabilized DC arc plasma Journal Article
In: Journal of the Serbian Chemical Society, vol. 69, no. 5, pp. 377-385, 2004.
@article{Ražić2004377,
title = {The influence of ethanol addition on the spatial emission distribution of traces in a vertical argon stabilized DC arc plasma},
author = {S Ražić and I Holclajtner-Antunović and M Todorović},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2542575444&doi=10.2298%2fJSC0405377R&partnerID=40&md5=713653d20660d5015b415e679a9f96e1},
doi = {10.2298/JSC0405377R},
year = {2004},
date = {2004-01-01},
journal = {Journal of the Serbian Chemical Society},
volume = {69},
number = {5},
pages = {377-385},
abstract = {The plasma of a vertical argon stabilized DC arc at atmospheric pressure is applied as a spectrochemical source. The lateral distributions of relative spectral line intensities of some trace elements (Zn, Pt, Cd, Mg, Ca and Al) introduced into the plasma in the form of aqueous and ethanol-aqueous solutions were experimentally determined. These distributions were correlated with the calculated equilibrium plasma composition of the arc plasma. On the basis of the obtained results, an explanation of the influence of ethanol addition on the radiation densities from an arc plasma is given.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Žák, T; Schneeweiss, O; Minić, D
Structure and phase analysis of electrochemically synthesized Fe-W Journal Article
In: Journal of Magnetism and Magnetic Materials, vol. 272-276, no. SUPPL. 1, pp. e1119-e1121, 2004.
@article{Žák2004,
title = {Structure and phase analysis of electrochemically synthesized Fe-W},
author = {T Žák and O Schneeweiss and D Minić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-23144438901&doi=10.1016%2fj.jmmm.2003.12.131&partnerID=40&md5=08fe66211b524c072c9e055ffc9eaffc},
doi = {10.1016/j.jmmm.2003.12.131},
year = {2004},
date = {2004-01-01},
journal = {Journal of Magnetism and Magnetic Materials},
volume = {272-276},
number = {SUPPL. 1},
pages = {e1119-e1121},
abstract = {Structural and magnetic study of electrochemically synthesized Fe 91.2W8.8 amorphous powder was realized. Mössbauer spectrum of the as prepared material with its paramagnetic and magnetic part includes γ-Fe plus components of Fe-W solid solution overlapped by amorphous magnetic and paramagnetic phases, stable almost down to 20 K. After thermomagnetic curve measurement, the increase in the intensity of the magnetic part was observed. Phases resulting from thermal decomposition agree with those in the equilibrium Fe-W phase diagram. © 2003 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kremenović, A; Norby, P; Dimitrijević, R; Dondur, V
Phase transition in hexacelsian at about 580 K Journal Article
In: Phase Transitions, vol. 77, no. 11, pp. 955-987, 2004.
@article{Kremenović2004955,
title = {Phase transition in hexacelsian at about 580 K},
author = {A Kremenović and P Norby and R Dimitrijević and V Dondur},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-10944270752&doi=10.1080%2f01411590412331282805&partnerID=40&md5=5a028fa1cc5d68fe89ba6beae68537bf},
doi = {10.1080/01411590412331282805},
year = {2004},
date = {2004-01-01},
journal = {Phase Transitions},
volume = {77},
number = {11},
pages = {955-987},
abstract = {Temperature-induced structure and microstructure changes in hexacelsians (BaAl2Si2O8) that have been synthesised from the Ba-exchanged LTA and FAU zeolites (hexacelsianLTA and hexacelsianFAU) show that the phase transition near 580 K exists only in hexacelsianLTA. The X-ray powder diffraction method has been used to follow the evolution of the structure during the phase transition, as described here. The excess thermodynamic quantities Gibbs free energy (G), entropy (S) and enthalpy (H) are obtained through the Landau theory of phase transition. The constants of proportionality between the G and ordering parameter (Q) are: h = -170345 J mol-1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Maričić, A; Minić, D M; Zak, T
Influence of the changes of free electron density on electrical and magnetic properties of the Co70Fe5Si10B15 amorphous alloy Journal Article
In: Science of Sintering, vol. 36, no. 3, pp. 197-203, 2004.
@article{Maričić2004197,
title = {Influence of the changes of free electron density on electrical and magnetic properties of the Co70Fe5Si10B15 amorphous alloy},
author = {A Maričić and D M Minić and T Zak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-33846859448&doi=10.2298%2fSOS0403197M&partnerID=40&md5=e76a39bb76290470122011a18b7e3163},
doi = {10.2298/SOS0403197M},
year = {2004},
date = {2004-01-01},
journal = {Science of Sintering},
volume = {36},
number = {3},
pages = {197-203},
abstract = {In this study we present the results on structural relaxation of the Co70Fe5Si10B15 amorphous alloy investigated by measuring the thermo-electromotive force (TEMF) during isothermal annealing (for 600 s). A mechanical junction of the investigated alloy and a copper conductor has been constructed for measuring the thermo-electromotive force (ε). Annealing was performed at temperatures T1=430°C},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mojović, M; Vuletić, M; Bačić, G G; Vučinić, Ž
Oxygen radicals produced by plant plasma membranes: An EPR spin-trap study Journal Article
In: Journal of Experimental Botany, vol. 55, no. 408, pp. 2523-2531, 2004.
@article{Mojović20042523,
title = {Oxygen radicals produced by plant plasma membranes: An EPR spin-trap study},
author = {M Mojović and M Vuletić and G G Bačić and Ž Vučinić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-11144262180&doi=10.1093%2fjxb%2ferh266&partnerID=40&md5=89274629049d693354f57cd006e466d1},
doi = {10.1093/jxb/erh266},
year = {2004},
date = {2004-01-01},
journal = {Journal of Experimental Botany},
volume = {55},
number = {408},
pages = {2523-2531},
abstract = {Plant plasma membranes are known to produce superoxide radicals, while the production of the hydroxyl radical, previously detected in complex plant tissues, is thought to occur in the cell wall. The mechanism of production of superoxide radicals by plant plasma membranes is, however, under dispute. It is shown, using electron paramagnetic resonance spectroscopy with a 5-diethoxyphosphoryl-5-methyl-1-pyrroline N-oxide spintrap capable of differentiating between radical species, that isolated purified plasma membranes from maize roots produce hydroxyl radicals besides superoxide radicals. The results argue in favour of superoxide production through an oxygen and diphenylene iodonium-sensitive, NADH-dependent superoxide synthase mechanism, as well as through other unidentified mechanism(s). The hydroxyl radical is produced by an oxygen-insensitive, NADH-stimulated mechanism, which is enhanced in membranes in which the superoxide synthase is incapacitated by substrate removal or inhibition.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Marković, R; Shirazi, A; Džambaski, Z; Baranac, M; Minić, D
In: Journal of Physical Organic Chemistry, vol. 17, no. 2, pp. 118-123, 2004.
@article{Marković2004118,
title = {Configurational isomerization of push-pull thiazolidinone derivatives controlled by intermolecular and intramolecular RAHB: 1H NMR dynamic investigation of concentration and temperature effects},
author = {R Marković and A Shirazi and Z Džambaski and M Baranac and D Minić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0442280598&doi=10.1002%2fpoc.700&partnerID=40&md5=475d8c018ac1560cbe0ceded99cc6ef3},
doi = {10.1002/poc.700},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physical Organic Chemistry},
volume = {17},
number = {2},
pages = {118-123},
abstract = {1H NMR spectroscopy was used to investigate hydrogen bonding in the structurally related (Z)- and (E)-5-substituted-2-alkylidene-4-oxothiazolidines in polar and apolar solvents. The equilibrated mixtures of these typical push-pull alkenes consist of the intramolecularly H-bonded E-isomer and intermolecularly H-bonded Z-isomer in varying proportions which depend on the solvent polarity. For a representative of the series, (E)-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-1-phenylethanone (1), the lack of a concentration and temperature dependence of the large chemical NH shift (δ 12.06 ppm) in CDCl3 indicates strong intramolecular resonance-assisted hydrogen-bond formation (RAHB). The upfield chemical shifts of the NH proton of the (Z)-1 isomer as a function of temperature increase and the large 1H NMR Δδ/ΔT value (-11.82 ppb°C-1, Z/E = 60:40, or -10.33 ppb°C-1, Z/E = 20 : 80) in CDCl3 are explained in terms of a decrease in intermolecular H-bonding resulting in a greater amount of free or unassociated Z-isomer.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dragović, S; Nedić, O; Stanković, S; Bačić, G
Radiocesium accumulation in mosses from highlands of Serbia and Montenegro: Chemical and physiological aspects Journal Article
In: Journal of Environmental Radioactivity, vol. 77, no. 3, pp. 381-388, 2004.
@article{Dragović2004381,
title = {Radiocesium accumulation in mosses from highlands of Serbia and Montenegro: Chemical and physiological aspects},
author = {S Dragović and O Nedić and S Stanković and G Bačić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-4644362015&doi=10.1016%2fj.jenvrad.2004.04.007&partnerID=40&md5=88a92e529ac73d7c4ffc6ce2441c0596},
doi = {10.1016/j.jenvrad.2004.04.007},
year = {2004},
date = {2004-01-01},
journal = {Journal of Environmental Radioactivity},
volume = {77},
number = {3},
pages = {381-388},
abstract = {The aim of this work was (i) to determine the activity levels of 137 Cs in mosses from highland ecosystems of Serbia and Montenegro, (ii) to find out if radiocesium is associated with essential biomacromolecules, and (iii) to investigate 137 Cs distribution among intracellular compartments. It was found that biomolecules of mosses do not bind significant amounts of radiocesium (2.3-3.3% of the absorbed 137 Cs), a behavior that was independent of the moss species. Cellular fractionation of mosses showed that membranes are the primary 137 Cs-binding sites at the cellular level. They contained 26.1-43.1% of the initial radiocesium activity. It seems that 137 Cs-binding molecules in different mosses are of similar chemical nature, and their distribution between various cellular compartments is not species specific. © 2004 Published by Elsevier Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sredić, S; Čajkovski, T; Davidović, M; Čajkovski, D; Likar-Smiljanić, V; Marinović-Cincović, M; Mioč, U B; Nedić, Z; Biljić, R
Physicochemical properties of Al-pillared montmorillonite doped with 12-tungstophosphoric acid Journal Article
In: Materials Science Forum, vol. 453-454, pp. 157-162, 2004.
@article{Sredić2004157,
title = {Physicochemical properties of Al-pillared montmorillonite doped with 12-tungstophosphoric acid},
author = {S Sredić and T Čajkovski and M Davidović and D Čajkovski and V Likar-Smiljanić and M Marinović-Cincović and U B Mioč and Z Nedić and R Biljić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142694932&partnerID=40&md5=90efd56c95608900f43b1548b6515547},
year = {2004},
date = {2004-01-01},
journal = {Materials Science Forum},
volume = {453-454},
pages = {157-162},
abstract = {Bentonite a natural raw material from the Šipovo mining deposits (Republic of Srpska), which contains a high percentage of montmorillonite, was treated to obtain montmorillonite clay ready for further investigations. Al-pillared montmorillonite was doped with 12-tungstophosphoric acid (WPA) by the sol-gel method. Substantial increase in proton conductivity of this new material was achieved. Different physicochemical methods were used to characterize new materials such as X-ray powder diffraction (XRD), thermogravimetric (TG) analysis, porosity measurements, scanning electron microscopy (SEM), and infrared measurements (IR). Impedance spectroscopy technique was applied in order to study the proton conductivity and its dependence on the frequency and tungstophosphoric acid concentration.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dimitrijevic, R; Dondur, V; Vulic, P; Markovic, S; Macura, S
Structural characterization of pure Na-nephelines synthesized by zeolite conversion route Journal Article
In: Journal of Physics and Chemistry of Solids, vol. 65, no. 10, pp. 1623-1633, 2004.
@article{Dimitrijevic20041623,
title = {Structural characterization of pure Na-nephelines synthesized by zeolite conversion route},
author = {R Dimitrijevic and V Dondur and P Vulic and S Markovic and S Macura},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142693482&doi=10.1016%2fj.jpcs.2004.03.005&partnerID=40&md5=4387109956ba9be6bb512680854bbb82},
doi = {10.1016/j.jpcs.2004.03.005},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physics and Chemistry of Solids},
volume = {65},
number = {10},
pages = {1623-1633},
abstract = {Using the zeolite thermally induced transformation route and starting from Na-LTA, Na-FAU and Na-GIS zeolites as precursors, we synthesized pure sodium nephelines (ps-Ne) with Si/Al ratios between 1.0 and 1.5 (ps-Ne LTA , ps-Ne FAU , ps-Ne GIS ). By X-ray diffraction analysis of intermediaries, we found that ps-Ne LTA and ps-Ne FAU were obtained as polymorphous transformation products from carnegieite phases and ps-Ne GIS was synthesized directly from amorphous zeolite precursor. Stoichiometric ps-Ne LTA Na 8 [Al 8 Si 8 ] 16 O 32 and non-stoichiometric ps-Ne FAU (Na 7.20 □ 0.80 ) 8 [Al 7.20 Si 8.80 ] 16 O 32 and ps-Ne GIS (Na 6.41 □ 1.59 ) 8 [Al 6.41 Si 9.59 ] 16 O 32 were obtained at temperatures 900-1200 °C. The crystal structures of these ps-Ne-s were refined in the P6 3 space group, from X-ray powder data using the Rietveld method. Mean T-O bond lengths decreases almost linearly with increasing the Si/Al ratio. These changes are induced by short-range order-disorder of Si, Al cations through the T G and T S sites. The increase of short-range disorder over T-sites, is followed and confirmed by 29 Si MAS NMR and IR spectroscopy. Comparison of the Si/Al ordering of synthesized ps-Ne structures with the published data shows inverse segregation of framework cations (Si; T1=T4 and Al; T2=T3). That is probably a consequence of applied synthesis route. © 2004 Elsevier Ltd. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Savović, J; Nikolić, R; Veselinović, D
Cobalt(II) chloride complex formation in acetamide-calcium nitrate tetrahydrate melts Journal Article
In: Journal of Solution Chemistry, vol. 33, no. 3, pp. 287-300, 2004.
@article{Savović2004287,
title = {Cobalt(II) chloride complex formation in acetamide-calcium nitrate tetrahydrate melts},
author = {J Savović and R Nikolić and D Veselinović},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3242877293&doi=10.1023%2fB%3aJOSL.0000035361.89473.a4&partnerID=40&md5=1775b27c816c537ccc2b8d922e81d6bd},
doi = {10.1023/B:JOSL.0000035361.89473.a4},
year = {2004},
date = {2004-01-01},
journal = {Journal of Solution Chemistry},
volume = {33},
number = {3},
pages = {287-300},
abstract = {The absorption spectra of Co(II) chloride complexes, containing variable concentrations of chloride ligand, in a molten mixture of 80 mol% acetamide-20 mol% calcium nitrate tetrahydrate, were studied at 313, 333, 353, and 363 K, in the wavelength range 400-800 nm. The melt contains three possible ligands (CH3CONH2, H2O, and NO3-) for competition with added chloride ligand. Addition of chloride caused a shift of the absorption maximum of octahedral cobalt(II) nitrate towards lower energies and pronounced changes in the shape of the initial spectrum of cobalt(II) nitrate. The effect of temperature changes on the molar absorption coefficient of the Co(II) species was dependent on the chloride concentration and was attributed to the structural changes occurring in the cobalt(II) species. The STAR and STAR FA programs were applied to identify the complex ionic species and to calculate the stability constants of Co(II) complexes formed in this solvent. The results indicate the highest probability of formation of the following complex species: Co(NO3)4 2-, Co(NO3)2Cl22-, and CoCl42-. Stability constants of each complex were presented for the equilibria occurring at 313, 333, 353, and 363 K. Distribution of the Co(II) species was also calculated over the ranges of chloride concentration and temperature investigated.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Jugović, D; Mitrić, M; Cvjetićanin, N; Miljković, M; Jokanović, V; Uskoković, D
Properties of LiMn 2 O 4 powders obtained by ultrasonic spray pyrolysis Journal Article
In: Materials Science Forum, vol. 453-454, pp. 387-392, 2004.
@article{Jugović2004387,
title = {Properties of LiMn 2 O 4 powders obtained by ultrasonic spray pyrolysis},
author = {D Jugović and M Mitrić and N Cvjetićanin and M Miljković and V Jokanović and D Uskoković},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142775710&partnerID=40&md5=b12a31fafb8688bf21c75a1d6732a2b4},
year = {2004},
date = {2004-01-01},
journal = {Materials Science Forum},
volume = {453-454},
pages = {387-392},
abstract = {LiMn 2 O 4 powders were synthesized by ultrasonic spray pyrolysis. By varying the cooling conditions, two samples of powders were obtained: quenched in water (Q) and spontaneously cooled to room temperature (SC). The crystal structure of the as-prepared powders was revealed by X-ray powder diffraction. Structure refinements confirm that SC sample crystallizes in Fd3m space group, while Q sample crystallizes in I4 1 /amd space group. Particle morphology was determined by scanning electron microscopy. Electrochemical intercalation and deintercalation were examined in galvanostatic regime.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nikčević, I; Jokanović, V; Mitrić, M; Nedić, Z; Makovec, D; Uskoković, D
Mechanochemical synthesis of nanostructured fluorapatite/ fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite Journal Article
In: Journal of Solid State Chemistry, vol. 177, no. 7, pp. 2565-2574, 2004.
@article{Nikčević20042565,
title = {Mechanochemical synthesis of nanostructured fluorapatite/ fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite},
author = {I Nikčević and V Jokanović and M Mitrić and Z Nedić and D Makovec and D Uskoković},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2942654770&doi=10.1016%2fj.jssc.2004.03.024&partnerID=40&md5=0bb3e20bba815afcbfb3c547904bd999},
doi = {10.1016/j.jssc.2004.03.024},
year = {2004},
date = {2004-01-01},
journal = {Journal of Solid State Chemistry},
volume = {177},
number = {7},
pages = {2565-2574},
abstract = {Powder mixture of Ca(OH) 2 -P 2 O 5 -CaF 2 were milled in planetary ball mill. A carbonated fluorhydroxyapatite, FHA Ca 10 (PO 4 ) 1-y (CO 3 ) y (PO 4 ) 5 (OH) 2-2x1 (F) 2x1 was formed after 5h of milling and carbonated fluoroapatite Ca 10 (PO 4 ) 1-y (CO 3 ) y (PO 4 ) 5 (F) 2 was formed after 9h of milling. Complete transformation of the carbonated form of FA into then single phase of FA occurred after 9h milling and thermally treating. The various experimental techniques like X-ray Diffraction (XRD), Differential Thermal Analysis (DTA), Infrared Spectroscopy (IR), Transmission Electron Microscopy and Scanning Electron Microscopy (SEM) were used to characterize the synthesized powders and to postulate reaction mechanisms' steps- transformations of reactants involved. © 2004 Elsevier Inc. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mioč, U B; Colomban, Ph.; Sagon, G; Stojanović, M; Rosić, A
Ochre decor and cinnabar residues in Neolithic pottery from Vinča, Serbia Journal Article
In: Journal of Raman Spectroscopy, vol. 35, no. 10, pp. 843-846, 2004.
@article{Mioč2004843,
title = {Ochre decor and cinnabar residues in Neolithic pottery from Vinča, Serbia},
author = {U B Mioč and Ph. Colomban and G Sagon and M Stojanović and A Rosić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-6944227546&doi=10.1002%2fjrs.1221&partnerID=40&md5=9587a31af16d0807d552191d4c857fef},
doi = {10.1002/jrs.1221},
year = {2004},
date = {2004-01-01},
journal = {Journal of Raman Spectroscopy},
volume = {35},
number = {10},
pages = {843-846},
abstract = {The prehistoric site of Vinča, on the right bank of the River Danube, the territory of the City of Belgrade, first excavated by M. Vasić in 1931-34, provides Neolithic pottery dating back to 5200-4200 BC. Shards excavated in 1998 (Serbian Academy of Sciences and Arts) have a yellow coating on the external (convex) and red deposit on the internal (concave) side. Raman, IR and x-ray identification proved that the yellow-to-red decor deposited on the external faces of pottery is made of ochre, a mixture of hematite, quartz and phyllosilicates. The red deposit found on some internal surfaces of the pottery consists of cinnabar (HgS) with some quartz and phyllosilicates. This indicates that cinnabar was not used for decor but for other purposes than and prepared or stored in ceramic utensils. A comparison is made with mercury ore from the Šuplja Stena mine located ∼20 km from Vinča village. Copyright © 2004 John Wiley & Sons, Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2004
Kaninski, M P M; Maksić, A D; Stojić, D. Lj.; Miljanić, S S
Ionic activators in the electrolytic production of hydrogen - Cost reduction-analysis of the cathode Journal Article
In: Journal of Power Sources, vol. 131, no. 1-2, pp. 107-111, 2004.
@article{Kaninski2004107,
title = {Ionic activators in the electrolytic production of hydrogen - Cost reduction-analysis of the cathode},
author = {M P M Kaninski and A D Maksić and D.Lj. Stojić and S S Miljanić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2342634442&doi=10.1016%2fj.jpowsour.2004.01.005&partnerID=40&md5=11af5fea0521166391c4aa3283f49823},
doi = {10.1016/j.jpowsour.2004.01.005},
year = {2004},
date = {2004-01-01},
journal = {Journal of Power Sources},
volume = {131},
number = {1-2},
pages = {107-111},
abstract = {As recent technology progress makes hydrogen a realistic long-term energy option with little or no pollution, development of new methods for its production and improvement of conventional technology is important. In spite of the fact that, among overall world technologies for hydrogen production today, only 4% is produced by electrolysis, this is the most promising method in the future as a consequence of the high existing water supply. The limitation factor for its use on the large scale is well known-high energy consumption. In this work, methods for increasing efficiency and lowering the energy consumption in the electrolytic hydrogen production are presented. The stability of ionic activators, as an indicator of capital cost, are also shown, as are an analysis of composition, structure and morphology characteristic of cathode, formed in the presence as ionic activators. © 2004 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Vukojević, V; Yakovleva, T; Terenius, L; Pramanik, A; Bakalkin, G
Denaturation of dsDNA by p53: Fluorescence correlation spectroscopy study Journal Article
In: Biochemical and Biophysical Research Communications, vol. 316, no. 4, pp. 1150-1155, 2004.
@article{Vukojević20041150,
title = {Denaturation of dsDNA by p53: Fluorescence correlation spectroscopy study},
author = {V Vukojević and T Yakovleva and L Terenius and A Pramanik and G Bakalkin},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1642275403&doi=10.1016%2fj.bbrc.2004.02.167&partnerID=40&md5=f802a2acc9686701ea84a3500aabb2ea},
doi = {10.1016/j.bbrc.2004.02.167},
year = {2004},
date = {2004-01-01},
journal = {Biochemical and Biophysical Research Communications},
volume = {316},
number = {4},
pages = {1150-1155},
abstract = {p53 activates transcription through interaction with specific DNA sequences in gene promoters. It also regulates DNA replication, recombination, and repair apparently through interactions with DNA intermediates of these reactions. Biochemical activities relevant for these functions of p53 include binding to the ends and internal segments of single-stranded DNA molecules, catalysis of DNA renaturation, and strand exchange. We report a novel activity of p53, its ability to denature double-stranded DNA molecules aggregated by basic peptides. Stable complexes of coiled single-stranded DNA molecules with basic peptides are formed in this reaction. Thus, complementary to the ability to catalyze DNA renaturation, p53 denatures double-stranded DNA when the latter reaction is thermodynamically favorable. This p53 activity, along with its ability to interact physically with DNA helicases, may be relevant for resolving double-stranded DNA intermediates and inhibition of DNA recombination, which is critical for guarding of the genome. © 2004 Elsevier Inc. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Micic, M; Radotic, K; Jeremic, M; Djikanovic, D; Kämmer, S B
Study of the lignin model compound supramolecular structure by combination of near-field scanning optical microscopy and atomic force microscopy Journal Article
In: Colloids and Surfaces B: Biointerfaces, vol. 34, no. 1, pp. 33-40, 2004.
@article{Micic200433,
title = {Study of the lignin model compound supramolecular structure by combination of near-field scanning optical microscopy and atomic force microscopy},
author = {M Micic and K Radotic and M Jeremic and D Djikanovic and S B Kämmer},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1242276299&doi=10.1016%2fj.colsurfb.2003.10.018&partnerID=40&md5=5e65808c56a928cb184f645d93478aa7},
doi = {10.1016/j.colsurfb.2003.10.018},
year = {2004},
date = {2004-01-01},
journal = {Colloids and Surfaces B: Biointerfaces},
volume = {34},
number = {1},
pages = {33-40},
abstract = {In this paper, we present a nanoscale study of the supramolecular structure of the dehydrogenate polymer (ZL-DHP) lignin model compound. The combination of near-field scanning optical microscopy (NSOM or SNOM) and atomic force microscopy (AFM) has been utilized to explore physicochemical properties of the lignin model compound on a scale ranging from individual macromolecules to globular supramolecular assemblies. By utilizing NSOM in transmission mode, the optical inhomogeneity in the lignin supramolecular structure has been observed for the first time. In particular, the transmission-mode NSOM images reveal a combination of hollow and layered supramolecular globular structure in the lignin model compound. Through the paired use of TappingMode™ and pulsed-mode AFM, we have also confirmed the existence of regions with different rheological properties on the single lignin model compound supramolecular assembly. © 2003 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nikolić, N; Veselinović, D; Vladimirov, S; Karljiković-Rajić, K; Lingeman, H
In: Journal of Pharmaceutical and Biomedical Analysis, vol. 34, no. 2, pp. 285-293, 2004.
@article{Nikolić2004285,
title = {Chiral ligand-exchange chromatography as the screening method for proposed modifications in exametazime synthesis to enhance diastereoselectivity},
author = {N Nikolić and D Veselinović and S Vladimirov and K Karljiković-Rajić and H Lingeman},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0842287434&doi=10.1016%2fS0731-7085%2803%2900551-X&partnerID=40&md5=575b332b7f31ddc6f99a6b46c010c089},
doi = {10.1016/S0731-7085(03)00551-X},
year = {2004},
date = {2004-01-01},
journal = {Journal of Pharmaceutical and Biomedical Analysis},
volume = {34},
number = {2},
pages = {285-293},
abstract = {99mTc(V)-d,l-HM-PAO complex is well-known radiopharmaceutical for regional cerebral blood flow imaging. The proposed modifications in exametazime, hexamethylpropyleneamine oxime (HM-PAO) (4,8-diaza-3,6,6,9- tetramethylundecane-2,10-dione bisoxime) synthesis, for reduction of intermediary reactant diiminebisoxime (DI) (4,8-diaza-3,6,6,9- tetramethylundecane-3,8-diene-2,10-dione bisoxime) concerned two reductants (NaBH4 and KBH4), two solvents (ethanol and 2-propanol), and three mole ratios of reactant/reductants (1:1, 1:1.5, and 1:2). The simultaneous analysis of diastereo-enantiomeric HM-PAO content, as well as the content of starting DI, in different reduction mixtures were performed using chiral ligand-exchange chromatography (CLEC). The separation of the samples of investigated reduction mixtures, obtained in the second step of HM-PAO synthesis, has been accomplished by using an achiral sorbent (RP-18) and a chiral mobile phase (CMP) containing copper(II) complex with N,N-dimethyl-L-phenylalanine (L-DM-PhA) as initial complex for CLEC. With 12 different reduction conditions, the obtained ratios of diastereoisomers d,l-HM-PAO: meso-HM-PAO varied from 69.2:30.8 to 15.9:84.1, in comparison to the reduction in routine synthesis of HM-PAO which gives an equal mixture of diastereoisomers. The ternary mixed complexes formation recorded spectrophotometrically on addition of HM-PAO or DI to the mobile phase with binary complex Cu(L-DM-PhA)2, due to the evidence of bathochromic shift of 46nm for λmax with significant difference in absorptivity contributes to separation mechanism. © 2003 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Begović, N; Marković, Z; Anić, S; Kolar-Anić, L
Computational investigation of HIO and HIO 2 isomers Journal Article
In: Journal of Physical Chemistry A, vol. 108, no. 4, pp. 651-657, 2004.
@article{Begović2004651,
title = {Computational investigation of HIO and HIO 2 isomers},
author = {N Begović and Z Marković and S Anić and L Kolar-Anić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0442295464&doi=10.1021%2fjp034492o&partnerID=40&md5=e4f691a5934358b415995357a501157a},
doi = {10.1021/jp034492o},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physical Chemistry A},
volume = {108},
number = {4},
pages = {651-657},
abstract = {The theoretical study of hypoiodous and iodous acid isomers, which can be written in the common form HIO n (n = 1,2), is presented. For this purpose, several basis sets and several computational methods are tested. The best fitting with the values known in the literature is achieved using density functional theory at the level of Gill96 exchange and Perdew-Wang91 correlation functional (G96PW91) method, with Lanl2DZ basis set augmented with p and d diffuse and polarization functions for oxygen, relativistic effective core potential of Hay and Wadt combined with Lanl2DZ basis set augmented with diffuse (s and p) and polarization (d and f) functions for iodine, and 6-311++G(3df,3pd) basis set for hydrogen. Using this method for the calculation of bond lengths, vibrations, and energies, the mentioned species are analyzed. The justification of the calculated values is performed by thermochemical calculations of enthalpy of formation of mentioned species. We found that between hypoiodous acid isomers HOI is more stable then HIO, and that between iodous acid isomers HOIO is the most stable isomer. Therefore, they are the most probable ones in the reactions where they take part. All calculations are performed for the species in the gaseous phase. As far as we know, these calculations give the first such information for iodous acid isomers and HIO.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Stanisavljev, D R; Djordjević, A R; Likar-Smiljanić, V D
Microwave driven Bray-Liebhafsky Oscillatory reaction Journal Article
In: ChemPhysChem, vol. 5, no. 1, pp. 140-144, 2004.
@article{Stanisavljev2004140,
title = {Microwave driven Bray-Liebhafsky Oscillatory reaction},
author = {D R Stanisavljev and A R Djordjević and V D Likar-Smiljanić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2442612541&doi=10.1002%2fcphc.200300899&partnerID=40&md5=2d6dcff5e8191f1b37cfcbfba9c6600b},
doi = {10.1002/cphc.200300899},
year = {2004},
date = {2004-01-01},
journal = {ChemPhysChem},
volume = {5},
number = {1},
pages = {140-144},
abstract = {Microwaves alter dynamics: Oscillatory reactions are important in controlling processes in living organisms, in the same way that a clock controls processes in modern computers. Investigations of the microwave heating of the Bray-Liebhafsky oscillatory reaction revealed nonthermal effects by the favoring of monotonic dynamics (see graphic). The important role of bulk water is discussed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Minić, D; Jakovljević, G; Sladić, D; Andjelković, K
In: Materials Science Forum, vol. 453-454, pp. 567-572, 2004.
@article{Minić2004567,
title = {Investigation of thermal stability and kinetic studies of transition metal complexes with the condensation product of 2,6-diacetylpyridine and semioxamazide},
author = {D Minić and G Jakovljević and D Sladić and K Andjelković},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142718316&partnerID=40&md5=e8f5392d4308f1b00871185fc8a6a1b3},
year = {2004},
date = {2004-01-01},
journal = {Materials Science Forum},
volume = {453-454},
pages = {567-572},
abstract = {Thermal behavior of Cu(II), U(VI), Mn(II) and Ni(II) complexes with 2′,2‴-(2,6-pyridinediyldiethylidyne)dioxamohydrazide was studied by DSC and TG analysis, in the temperature range of 20-600°C in a stream of nitrogen. Depending on' the structure of complexes, thermal degradation occurred mostly in the range of 200-400°C, preceded by a loss of crystal and coordinated solvent if present. Kinetic processes of degradation were studied by analysis of DSC and TG curves recorded at one or more heating rates. Based on activation energies, determined in this way, thermodynamic parameters of activated complexes were also determined for U(VI) and Mn(II) complexes. Mechanisms of degradation processes were established using the obtained data.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Ražić, S; Holclajtner-Antunović, I; Todorović, M
The influence of ethanol addition on the spatial emission distribution of traces in a vertical argon stabilized DC arc plasma Journal Article
In: Journal of the Serbian Chemical Society, vol. 69, no. 5, pp. 377-385, 2004.
@article{Ražić2004377,
title = {The influence of ethanol addition on the spatial emission distribution of traces in a vertical argon stabilized DC arc plasma},
author = {S Ražić and I Holclajtner-Antunović and M Todorović},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2542575444&doi=10.2298%2fJSC0405377R&partnerID=40&md5=713653d20660d5015b415e679a9f96e1},
doi = {10.2298/JSC0405377R},
year = {2004},
date = {2004-01-01},
journal = {Journal of the Serbian Chemical Society},
volume = {69},
number = {5},
pages = {377-385},
abstract = {The plasma of a vertical argon stabilized DC arc at atmospheric pressure is applied as a spectrochemical source. The lateral distributions of relative spectral line intensities of some trace elements (Zn, Pt, Cd, Mg, Ca and Al) introduced into the plasma in the form of aqueous and ethanol-aqueous solutions were experimentally determined. These distributions were correlated with the calculated equilibrium plasma composition of the arc plasma. On the basis of the obtained results, an explanation of the influence of ethanol addition on the radiation densities from an arc plasma is given.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Žák, T; Schneeweiss, O; Minić, D
Structure and phase analysis of electrochemically synthesized Fe-W Journal Article
In: Journal of Magnetism and Magnetic Materials, vol. 272-276, no. SUPPL. 1, pp. e1119-e1121, 2004.
@article{Žák2004,
title = {Structure and phase analysis of electrochemically synthesized Fe-W},
author = {T Žák and O Schneeweiss and D Minić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-23144438901&doi=10.1016%2fj.jmmm.2003.12.131&partnerID=40&md5=08fe66211b524c072c9e055ffc9eaffc},
doi = {10.1016/j.jmmm.2003.12.131},
year = {2004},
date = {2004-01-01},
journal = {Journal of Magnetism and Magnetic Materials},
volume = {272-276},
number = {SUPPL. 1},
pages = {e1119-e1121},
abstract = {Structural and magnetic study of electrochemically synthesized Fe 91.2W8.8 amorphous powder was realized. Mössbauer spectrum of the as prepared material with its paramagnetic and magnetic part includes γ-Fe plus components of Fe-W solid solution overlapped by amorphous magnetic and paramagnetic phases, stable almost down to 20 K. After thermomagnetic curve measurement, the increase in the intensity of the magnetic part was observed. Phases resulting from thermal decomposition agree with those in the equilibrium Fe-W phase diagram. © 2003 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kremenović, A; Norby, P; Dimitrijević, R; Dondur, V
Phase transition in hexacelsian at about 580 K Journal Article
In: Phase Transitions, vol. 77, no. 11, pp. 955-987, 2004.
@article{Kremenović2004955,
title = {Phase transition in hexacelsian at about 580 K},
author = {A Kremenović and P Norby and R Dimitrijević and V Dondur},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-10944270752&doi=10.1080%2f01411590412331282805&partnerID=40&md5=5a028fa1cc5d68fe89ba6beae68537bf},
doi = {10.1080/01411590412331282805},
year = {2004},
date = {2004-01-01},
journal = {Phase Transitions},
volume = {77},
number = {11},
pages = {955-987},
abstract = {Temperature-induced structure and microstructure changes in hexacelsians (BaAl2Si2O8) that have been synthesised from the Ba-exchanged LTA and FAU zeolites (hexacelsianLTA and hexacelsianFAU) show that the phase transition near 580 K exists only in hexacelsianLTA. The X-ray powder diffraction method has been used to follow the evolution of the structure during the phase transition, as described here. The excess thermodynamic quantities Gibbs free energy (G), entropy (S) and enthalpy (H) are obtained through the Landau theory of phase transition. The constants of proportionality between the G and ordering parameter (Q) are: h = -170345 J mol-1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Maričić, A; Minić, D M; Zak, T
Influence of the changes of free electron density on electrical and magnetic properties of the Co70Fe5Si10B15 amorphous alloy Journal Article
In: Science of Sintering, vol. 36, no. 3, pp. 197-203, 2004.
@article{Maričić2004197,
title = {Influence of the changes of free electron density on electrical and magnetic properties of the Co70Fe5Si10B15 amorphous alloy},
author = {A Maričić and D M Minić and T Zak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-33846859448&doi=10.2298%2fSOS0403197M&partnerID=40&md5=e76a39bb76290470122011a18b7e3163},
doi = {10.2298/SOS0403197M},
year = {2004},
date = {2004-01-01},
journal = {Science of Sintering},
volume = {36},
number = {3},
pages = {197-203},
abstract = {In this study we present the results on structural relaxation of the Co70Fe5Si10B15 amorphous alloy investigated by measuring the thermo-electromotive force (TEMF) during isothermal annealing (for 600 s). A mechanical junction of the investigated alloy and a copper conductor has been constructed for measuring the thermo-electromotive force (ε). Annealing was performed at temperatures T1=430°C},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mojović, M; Vuletić, M; Bačić, G G; Vučinić, Ž
Oxygen radicals produced by plant plasma membranes: An EPR spin-trap study Journal Article
In: Journal of Experimental Botany, vol. 55, no. 408, pp. 2523-2531, 2004.
@article{Mojović20042523,
title = {Oxygen radicals produced by plant plasma membranes: An EPR spin-trap study},
author = {M Mojović and M Vuletić and G G Bačić and Ž Vučinić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-11144262180&doi=10.1093%2fjxb%2ferh266&partnerID=40&md5=89274629049d693354f57cd006e466d1},
doi = {10.1093/jxb/erh266},
year = {2004},
date = {2004-01-01},
journal = {Journal of Experimental Botany},
volume = {55},
number = {408},
pages = {2523-2531},
abstract = {Plant plasma membranes are known to produce superoxide radicals, while the production of the hydroxyl radical, previously detected in complex plant tissues, is thought to occur in the cell wall. The mechanism of production of superoxide radicals by plant plasma membranes is, however, under dispute. It is shown, using electron paramagnetic resonance spectroscopy with a 5-diethoxyphosphoryl-5-methyl-1-pyrroline N-oxide spintrap capable of differentiating between radical species, that isolated purified plasma membranes from maize roots produce hydroxyl radicals besides superoxide radicals. The results argue in favour of superoxide production through an oxygen and diphenylene iodonium-sensitive, NADH-dependent superoxide synthase mechanism, as well as through other unidentified mechanism(s). The hydroxyl radical is produced by an oxygen-insensitive, NADH-stimulated mechanism, which is enhanced in membranes in which the superoxide synthase is incapacitated by substrate removal or inhibition.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Marković, R; Shirazi, A; Džambaski, Z; Baranac, M; Minić, D
In: Journal of Physical Organic Chemistry, vol. 17, no. 2, pp. 118-123, 2004.
@article{Marković2004118,
title = {Configurational isomerization of push-pull thiazolidinone derivatives controlled by intermolecular and intramolecular RAHB: 1H NMR dynamic investigation of concentration and temperature effects},
author = {R Marković and A Shirazi and Z Džambaski and M Baranac and D Minić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0442280598&doi=10.1002%2fpoc.700&partnerID=40&md5=475d8c018ac1560cbe0ceded99cc6ef3},
doi = {10.1002/poc.700},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physical Organic Chemistry},
volume = {17},
number = {2},
pages = {118-123},
abstract = {1H NMR spectroscopy was used to investigate hydrogen bonding in the structurally related (Z)- and (E)-5-substituted-2-alkylidene-4-oxothiazolidines in polar and apolar solvents. The equilibrated mixtures of these typical push-pull alkenes consist of the intramolecularly H-bonded E-isomer and intermolecularly H-bonded Z-isomer in varying proportions which depend on the solvent polarity. For a representative of the series, (E)-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-1-phenylethanone (1), the lack of a concentration and temperature dependence of the large chemical NH shift (δ 12.06 ppm) in CDCl3 indicates strong intramolecular resonance-assisted hydrogen-bond formation (RAHB). The upfield chemical shifts of the NH proton of the (Z)-1 isomer as a function of temperature increase and the large 1H NMR Δδ/ΔT value (-11.82 ppb°C-1, Z/E = 60:40, or -10.33 ppb°C-1, Z/E = 20 : 80) in CDCl3 are explained in terms of a decrease in intermolecular H-bonding resulting in a greater amount of free or unassociated Z-isomer.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dragović, S; Nedić, O; Stanković, S; Bačić, G
Radiocesium accumulation in mosses from highlands of Serbia and Montenegro: Chemical and physiological aspects Journal Article
In: Journal of Environmental Radioactivity, vol. 77, no. 3, pp. 381-388, 2004.
@article{Dragović2004381,
title = {Radiocesium accumulation in mosses from highlands of Serbia and Montenegro: Chemical and physiological aspects},
author = {S Dragović and O Nedić and S Stanković and G Bačić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-4644362015&doi=10.1016%2fj.jenvrad.2004.04.007&partnerID=40&md5=88a92e529ac73d7c4ffc6ce2441c0596},
doi = {10.1016/j.jenvrad.2004.04.007},
year = {2004},
date = {2004-01-01},
journal = {Journal of Environmental Radioactivity},
volume = {77},
number = {3},
pages = {381-388},
abstract = {The aim of this work was (i) to determine the activity levels of 137 Cs in mosses from highland ecosystems of Serbia and Montenegro, (ii) to find out if radiocesium is associated with essential biomacromolecules, and (iii) to investigate 137 Cs distribution among intracellular compartments. It was found that biomolecules of mosses do not bind significant amounts of radiocesium (2.3-3.3% of the absorbed 137 Cs), a behavior that was independent of the moss species. Cellular fractionation of mosses showed that membranes are the primary 137 Cs-binding sites at the cellular level. They contained 26.1-43.1% of the initial radiocesium activity. It seems that 137 Cs-binding molecules in different mosses are of similar chemical nature, and their distribution between various cellular compartments is not species specific. © 2004 Published by Elsevier Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sredić, S; Čajkovski, T; Davidović, M; Čajkovski, D; Likar-Smiljanić, V; Marinović-Cincović, M; Mioč, U B; Nedić, Z; Biljić, R
Physicochemical properties of Al-pillared montmorillonite doped with 12-tungstophosphoric acid Journal Article
In: Materials Science Forum, vol. 453-454, pp. 157-162, 2004.
@article{Sredić2004157,
title = {Physicochemical properties of Al-pillared montmorillonite doped with 12-tungstophosphoric acid},
author = {S Sredić and T Čajkovski and M Davidović and D Čajkovski and V Likar-Smiljanić and M Marinović-Cincović and U B Mioč and Z Nedić and R Biljić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142694932&partnerID=40&md5=90efd56c95608900f43b1548b6515547},
year = {2004},
date = {2004-01-01},
journal = {Materials Science Forum},
volume = {453-454},
pages = {157-162},
abstract = {Bentonite a natural raw material from the Šipovo mining deposits (Republic of Srpska), which contains a high percentage of montmorillonite, was treated to obtain montmorillonite clay ready for further investigations. Al-pillared montmorillonite was doped with 12-tungstophosphoric acid (WPA) by the sol-gel method. Substantial increase in proton conductivity of this new material was achieved. Different physicochemical methods were used to characterize new materials such as X-ray powder diffraction (XRD), thermogravimetric (TG) analysis, porosity measurements, scanning electron microscopy (SEM), and infrared measurements (IR). Impedance spectroscopy technique was applied in order to study the proton conductivity and its dependence on the frequency and tungstophosphoric acid concentration.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dimitrijevic, R; Dondur, V; Vulic, P; Markovic, S; Macura, S
Structural characterization of pure Na-nephelines synthesized by zeolite conversion route Journal Article
In: Journal of Physics and Chemistry of Solids, vol. 65, no. 10, pp. 1623-1633, 2004.
@article{Dimitrijevic20041623,
title = {Structural characterization of pure Na-nephelines synthesized by zeolite conversion route},
author = {R Dimitrijevic and V Dondur and P Vulic and S Markovic and S Macura},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142693482&doi=10.1016%2fj.jpcs.2004.03.005&partnerID=40&md5=4387109956ba9be6bb512680854bbb82},
doi = {10.1016/j.jpcs.2004.03.005},
year = {2004},
date = {2004-01-01},
journal = {Journal of Physics and Chemistry of Solids},
volume = {65},
number = {10},
pages = {1623-1633},
abstract = {Using the zeolite thermally induced transformation route and starting from Na-LTA, Na-FAU and Na-GIS zeolites as precursors, we synthesized pure sodium nephelines (ps-Ne) with Si/Al ratios between 1.0 and 1.5 (ps-Ne LTA , ps-Ne FAU , ps-Ne GIS ). By X-ray diffraction analysis of intermediaries, we found that ps-Ne LTA and ps-Ne FAU were obtained as polymorphous transformation products from carnegieite phases and ps-Ne GIS was synthesized directly from amorphous zeolite precursor. Stoichiometric ps-Ne LTA Na 8 [Al 8 Si 8 ] 16 O 32 and non-stoichiometric ps-Ne FAU (Na 7.20 □ 0.80 ) 8 [Al 7.20 Si 8.80 ] 16 O 32 and ps-Ne GIS (Na 6.41 □ 1.59 ) 8 [Al 6.41 Si 9.59 ] 16 O 32 were obtained at temperatures 900-1200 °C. The crystal structures of these ps-Ne-s were refined in the P6 3 space group, from X-ray powder data using the Rietveld method. Mean T-O bond lengths decreases almost linearly with increasing the Si/Al ratio. These changes are induced by short-range order-disorder of Si, Al cations through the T G and T S sites. The increase of short-range disorder over T-sites, is followed and confirmed by 29 Si MAS NMR and IR spectroscopy. Comparison of the Si/Al ordering of synthesized ps-Ne structures with the published data shows inverse segregation of framework cations (Si; T1=T4 and Al; T2=T3). That is probably a consequence of applied synthesis route. © 2004 Elsevier Ltd. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Savović, J; Nikolić, R; Veselinović, D
Cobalt(II) chloride complex formation in acetamide-calcium nitrate tetrahydrate melts Journal Article
In: Journal of Solution Chemistry, vol. 33, no. 3, pp. 287-300, 2004.
@article{Savović2004287,
title = {Cobalt(II) chloride complex formation in acetamide-calcium nitrate tetrahydrate melts},
author = {J Savović and R Nikolić and D Veselinović},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3242877293&doi=10.1023%2fB%3aJOSL.0000035361.89473.a4&partnerID=40&md5=1775b27c816c537ccc2b8d922e81d6bd},
doi = {10.1023/B:JOSL.0000035361.89473.a4},
year = {2004},
date = {2004-01-01},
journal = {Journal of Solution Chemistry},
volume = {33},
number = {3},
pages = {287-300},
abstract = {The absorption spectra of Co(II) chloride complexes, containing variable concentrations of chloride ligand, in a molten mixture of 80 mol% acetamide-20 mol% calcium nitrate tetrahydrate, were studied at 313, 333, 353, and 363 K, in the wavelength range 400-800 nm. The melt contains three possible ligands (CH3CONH2, H2O, and NO3-) for competition with added chloride ligand. Addition of chloride caused a shift of the absorption maximum of octahedral cobalt(II) nitrate towards lower energies and pronounced changes in the shape of the initial spectrum of cobalt(II) nitrate. The effect of temperature changes on the molar absorption coefficient of the Co(II) species was dependent on the chloride concentration and was attributed to the structural changes occurring in the cobalt(II) species. The STAR and STAR FA programs were applied to identify the complex ionic species and to calculate the stability constants of Co(II) complexes formed in this solvent. The results indicate the highest probability of formation of the following complex species: Co(NO3)4 2-, Co(NO3)2Cl22-, and CoCl42-. Stability constants of each complex were presented for the equilibria occurring at 313, 333, 353, and 363 K. Distribution of the Co(II) species was also calculated over the ranges of chloride concentration and temperature investigated.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Jugović, D; Mitrić, M; Cvjetićanin, N; Miljković, M; Jokanović, V; Uskoković, D
Properties of LiMn 2 O 4 powders obtained by ultrasonic spray pyrolysis Journal Article
In: Materials Science Forum, vol. 453-454, pp. 387-392, 2004.
@article{Jugović2004387,
title = {Properties of LiMn 2 O 4 powders obtained by ultrasonic spray pyrolysis},
author = {D Jugović and M Mitrić and N Cvjetićanin and M Miljković and V Jokanović and D Uskoković},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3142775710&partnerID=40&md5=b12a31fafb8688bf21c75a1d6732a2b4},
year = {2004},
date = {2004-01-01},
journal = {Materials Science Forum},
volume = {453-454},
pages = {387-392},
abstract = {LiMn 2 O 4 powders were synthesized by ultrasonic spray pyrolysis. By varying the cooling conditions, two samples of powders were obtained: quenched in water (Q) and spontaneously cooled to room temperature (SC). The crystal structure of the as-prepared powders was revealed by X-ray powder diffraction. Structure refinements confirm that SC sample crystallizes in Fd3m space group, while Q sample crystallizes in I4 1 /amd space group. Particle morphology was determined by scanning electron microscopy. Electrochemical intercalation and deintercalation were examined in galvanostatic regime.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nikčević, I; Jokanović, V; Mitrić, M; Nedić, Z; Makovec, D; Uskoković, D
Mechanochemical synthesis of nanostructured fluorapatite/ fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite Journal Article
In: Journal of Solid State Chemistry, vol. 177, no. 7, pp. 2565-2574, 2004.
@article{Nikčević20042565,
title = {Mechanochemical synthesis of nanostructured fluorapatite/ fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite},
author = {I Nikčević and V Jokanović and M Mitrić and Z Nedić and D Makovec and D Uskoković},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2942654770&doi=10.1016%2fj.jssc.2004.03.024&partnerID=40&md5=0bb3e20bba815afcbfb3c547904bd999},
doi = {10.1016/j.jssc.2004.03.024},
year = {2004},
date = {2004-01-01},
journal = {Journal of Solid State Chemistry},
volume = {177},
number = {7},
pages = {2565-2574},
abstract = {Powder mixture of Ca(OH) 2 -P 2 O 5 -CaF 2 were milled in planetary ball mill. A carbonated fluorhydroxyapatite, FHA Ca 10 (PO 4 ) 1-y (CO 3 ) y (PO 4 ) 5 (OH) 2-2x1 (F) 2x1 was formed after 5h of milling and carbonated fluoroapatite Ca 10 (PO 4 ) 1-y (CO 3 ) y (PO 4 ) 5 (F) 2 was formed after 9h of milling. Complete transformation of the carbonated form of FA into then single phase of FA occurred after 9h milling and thermally treating. The various experimental techniques like X-ray Diffraction (XRD), Differential Thermal Analysis (DTA), Infrared Spectroscopy (IR), Transmission Electron Microscopy and Scanning Electron Microscopy (SEM) were used to characterize the synthesized powders and to postulate reaction mechanisms' steps- transformations of reactants involved. © 2004 Elsevier Inc. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mioč, U B; Colomban, Ph.; Sagon, G; Stojanović, M; Rosić, A
Ochre decor and cinnabar residues in Neolithic pottery from Vinča, Serbia Journal Article
In: Journal of Raman Spectroscopy, vol. 35, no. 10, pp. 843-846, 2004.
@article{Mioč2004843,
title = {Ochre decor and cinnabar residues in Neolithic pottery from Vinča, Serbia},
author = {U B Mioč and Ph. Colomban and G Sagon and M Stojanović and A Rosić},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-6944227546&doi=10.1002%2fjrs.1221&partnerID=40&md5=9587a31af16d0807d552191d4c857fef},
doi = {10.1002/jrs.1221},
year = {2004},
date = {2004-01-01},
journal = {Journal of Raman Spectroscopy},
volume = {35},
number = {10},
pages = {843-846},
abstract = {The prehistoric site of Vinča, on the right bank of the River Danube, the territory of the City of Belgrade, first excavated by M. Vasić in 1931-34, provides Neolithic pottery dating back to 5200-4200 BC. Shards excavated in 1998 (Serbian Academy of Sciences and Arts) have a yellow coating on the external (convex) and red deposit on the internal (concave) side. Raman, IR and x-ray identification proved that the yellow-to-red decor deposited on the external faces of pottery is made of ochre, a mixture of hematite, quartz and phyllosilicates. The red deposit found on some internal surfaces of the pottery consists of cinnabar (HgS) with some quartz and phyllosilicates. This indicates that cinnabar was not used for decor but for other purposes than and prepared or stored in ceramic utensils. A comparison is made with mercury ore from the Šuplja Stena mine located ∼20 km from Vinča village. Copyright © 2004 John Wiley & Sons, Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}