Претрага
311 items
-
Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... ion (MPC) of arsenic from 50 to 10 µg/L [10, 11]. A large number of adverse impacts of arsenic on human health have been identified, such as skin changes, effects on the cardiovascular and respiratory sys- tems, neurological impacts, and skin and other cancers [12]. First of all, toxic arsenic compounds ...
... and blood vessels, causing paralysis of the capillaries. As a result of the interruption of blood flow and neural processes occurring, pathological changes in heart, liver, intestines, kidneys, skin, and nails occur. Arsenic is a pro- toplasmic poison with a pronounced effect on oxidative processes in ...
... assess the health effects of chronic As exposure it would be necessary to accurately characterize residents’ consumption patterns, namely to track changes in the sources of drinking water, duration of use, and drinking rate. Central Banat and North Bačka featured the highest arsenic concentrations in ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
-
Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions
Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
-
Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders
Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)... [2] this was our motivation to dope CuO with Ag in order to improve further its multiferroic properties. Compared with CuO, we observed small changes in magnetic properties in Cu, „Ag,O. The size and morphology of the particles were successfully determined by transmission electron microscopy (TEM) ...Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić. "Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders" in Programme ; and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia , Beograd : Institut za multidisciplinarna istraživanja, (2023)
-
Preliminary regional landslide susceptibility assessment using limited data
Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...... dramatic changes in landslide distribution are evident for litho- logical type (14.08% and 16.6%, for WLT-TLSR-100 and WLT- TLSR-500 variants, respectively), followed by slope inclination (12.97% and 14.69%, for WSI-TLSR-100 and WSI-TLSR-500 var- iants, respectively). The smallest changes in landslide ...
... Regional landslide mapping is largely accepted among scientists, bearing in mind that the spatial distribution of land- slide conditioning parameters changes over larger areas. In this Preliminary regional landslide susceptibility assessment using limited data Igor Peshevski1, Milorad Jovanovski1 ...
... the basis of particular conditioning factor importance for land- slide development in a given region. In order to investigate the sensitivity to changes of these rat- ings, analysis is further extended by adding so called sensitivity coefficients for each of the conditioning parameters. The general ...Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska. "Preliminary regional landslide susceptibility assessment using limited data" in Geologica Croatica , Croatian Geological Society (2019). https://doi.org/10.4154/gc.2019.03
-
Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
-
Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... like in practice can be observed on the example of coal stacking at the "Tamnava - Zapad" pit shown on the diagram in Figure 2. Figure 2. Changes of stacking speed as a function of the number of layers, capacity and capabilities of the stacker stacking coal from the "Tamnava – Zapad" pit ...
... the stacker (4-20 m/min) coal can be stacked in 16 to 90 layers. For a more realistic hourly capacity, the minimum and maximum number of layers changes. For a pit rate of 3000 t/h, coal can be stacked in 25 to 150 layers. The example in Figure 2 shows the problem when the pit operates at a lower ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
-
Infotheca (Q25460443) in Wikidata
Ranka Stanković, Lazar Davidović (2021)Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.... efficiently generated by the OpenRefine tool. The difference between these two tools is in the granularity of transactions, since OpenRefine inputs the changes in a single step, so resolving data entry errors can lead to data dupli- cates, while QuickStatements inputs each item individually, allowing better ...
... to identifiers (QID) of the existing items and entry of new ones, if they do not already exist. In this phase, manual checking and possibly making changes are necessary. Creating a dataset schema defines the predicates that will link subjects to objects in RDF triples and it is a very important step. ...Ranka Stanković, Lazar Davidović. "Infotheca (Q25460443) in Wikidata" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.5
-
Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... ion (MPC) of arsenic from 50 to 10 µg/L [10, 11]. A large number of adverse impacts of arsenic on human health have been identified, such as skin changes, effects on the cardiovascular and respiratory sys- tems, neurological impacts, and skin and other cancers [12]. First of all, toxic arsenic compounds ...
... and blood vessels, causing paralysis of the capillaries. As a result of the interruption of blood flow and neural processes occurring, pathological changes in heart, liver, intestines, kidneys, skin, and nails occur. Arsenic is a pro- toplasmic poison with a pronounced effect on oxidative processes in ...
... assess the health effects of chronic As exposure it would be necessary to accurately characterize residents’ consumption patterns, namely to track changes in the sources of drinking water, duration of use, and drinking rate. Central Banat and North Bačka featured the highest arsenic concentrations in ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
-
Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)
Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...... samples, which is reflected through the increase of lower homologues. In addition to the fact that the distribution of n-alkanes depends on maturity changes that particularly occur in the CS pyrolysis, it also depends on the kerogen precursor material. The prevalence of lower homologues in LPs is consistent ...Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović. "Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134040
-
Using gravity data to define structural correlation affecting the formation of Neogene basins
A gravity survey can help to define the structural correlation in the study area. The structures that have influenced the development of Neogene basins can be defined using gravity data. By applying mathematical transformations to gravity data, the geological structures (faults, nappes, etc.) that impacted the formation of Neogene basins can be defined. We have taken the part of the Dinarides as the test region. The paper presents the results obtained using the procedure residual, vertical gradient, and total ...Snežana Ignjatović, Ivana Vasiljević, Branisav Sretković, Milanka Negovanović. "Using gravity data to define structural correlation affecting the formation of Neogene basins" in The 54th International October Conference on Mining and Metallurgy, Bor Lake, Serbia, 18-21 October 2023, Bor : University of Belgrade, Technical Faculty in Bor (2023)
-
Centar za hidrogeologiju karsta - 15 godina nauke i struke
... Saša participated in the SUDEHSTRA project (Sustainable Development of Hungarian-Serbian Transboundary Aquifer), in the project CCWaterS (Climate Changes and Water Supply) Zoran and Saša were joined by Vesna and ljiljana. One of first tasks was the creation of a website, which Saša and Lljilja ...
... karst waters of Western Balkan – VUSPLAN (2007-2009). Bilateralni projekat Srpske akademije nauka i umetnosti i Bugarske akademije nauka Climate changes and Impacts on Water Supply CCWaterS, SFEF Programe, finansiran od strane FU Delegacije za Srbiju iz sredstava fonda IPA (2009-2012) UN FAO projekat ...
... Western Balkan - VUSPLAN (2007-2009). Bilateral project of the Serbian Academy of Sciences and Arts and the Bulgarian Academy o} Sciences. Climate changes and Impacts on Water Supply CCWaterS, SFE Program, financed by the FU Delegation for Serbia from the IPA funds (2009- Učesnici na radionici u okviru ...urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović. Centar za hidrogeologiju karsta - 15 godina nauke i struke, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, Centar za hidrogeologiju karsta, 2023
-
Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content
Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugsNina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović. "Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content" in Journal of Sol-Gel Science and Technology, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s10971-019-04925-4
-
Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines
The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković. "Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines" in 8th International Conference MIining And Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
-
The analysis of the geothermal energy capacity for power generation in Serbia
Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)... Results and discussion The silica phases present in geothermal flu- ids are quartz, chalcedony and amorphous sil- ica. Figure 1 presents the diagram changes of silica concentrations in selected 23 groundwa- ter samples, and measured temperature (Tm °C). It is obvious that high content of silica condi- ...
... et al.: The Analysis of the Geothermal Energy Capacity for ... THERMAL SCIENCE: Year 2013, Vol. 17, No. 4, pp. 969-976 971 Figure 1. The diagram changes of silica concentrations and measured temperature (Tm °C) also includes temperatures at which electric power may be generated by some generally ...Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk. "The analysis of the geothermal energy capacity for power generation in Serbia" in Thermal Science, National Library of Serbia (2013). https://doi.org/10.2298/TSCI120215033S
-
Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... maximum depth of 60 m was employed (Figure 5). Figure 5. Schematic representation of the geological coal and gravel deposit, “Kovin”, with pressure changes with increasing depth. Minerals 2021, 11, 564 5 of 17 5. Methodology of Cutting Resistance Testing Up to date, there are no well-defined and accepted ...
... Cutting Resistance Testing for Underwater Coal Mining The cutting resistance testing methodology for underwater coal mining is designed to determine changes in the value of cutting resistance depending on the change in the mining depth, which is represented by the change of hydrostatic (confining) pressure ...
... 450, 500, 550, and 600 kPa were applied. The modified cutting resistance testing methodology for underwater coal mining is designed to determine changes in the value of cutting resistance depending on the change in the mining depth, which is represented by the change of hydrostatic (confining) pressure ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
-
Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
-
Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability
Marija Živković, Dejan Ivezić (2021)Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија... possible integration of heat pumps in district heating systems were identified: (a) Heat pump placement into the existing network without major changes, (b) heat pump placement in an expanded network, (c) deep refurbishment of the existing district heating system, and (d) the design of a new district ...
... was applied for Serbia as a case study, assuming a scenario of integration of heat pumps in the existing district heating systems with- out major changes. Currently in Serbia, sewage waste heat is not utilized at all. Moreover, there are no available data about sewage waste heat potential at the level ...
... in the existing district heating systems (assuming a scenario of integration of heat pumps in the existing district heating systems without major changes) are evaluated. It has been shown that all proposed indicators for the projected future would have more desirable values compared to the values ...Marija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
-
Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...... substitution reactions of [Ru(trpy)(bpy)Cl]? with nucleophiles Tu, L-His, DMSO, and 50-GMP were investigated spectrophotometrically by following the changes in absorbance at suitable wavelengths as a func- tion of time at 310 K. The complex and ligands were dissolved in aqueous 0.1 M NaClO4 with the addition ...
... addition of 20 mM NaCl to prevent the spontaneous hydrolysis of Ru(II) complex [42–44]. The concentration of 20 mM NaCl was chosen after recording the changes in absorbance of the complex at different chloride concentrations. The obtained results are given in the Supplementary material (Table 1S; Fig. ...
... The kinetics of the substitution reactions of [Ru(trpy) (bpy)Cl]? with nucleophiles 50-GMP, L-His, Tu, and DMSO were studied by following the changes in absor- bance at a suitable wavelength as a function of time. The working wavelength for each reaction system was deter- mined by recording the ...Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
-
The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje
In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...... from CORINE Land Cover (CLC) is generated by the processing of high-resolution satellite images and they provide information about land cover changes in the major part of Europe. Polygonal entities represent a state of land cover differentiated in 44 classes, divided into a 3-level hierarchical ...
... classification system (Stojkovic S., 2017). The COPERNICUS website includes CLC datasets for different years with the corresponding land cover changes (Copernicus land Monitoring Service, 2019a). Regarding the object of this study, using the ArcGIS software (ArcMap) it is possible to extract ...
... of Serbia. (Available Internet link: http://publikacıje.stat.gov.rs/G2018/PdfE/G201813045.pdf). Stojkovic S., 2017. "GIS Analysis of Land Use Changes – Case Study: the Stara Pazova Municipality, Serbia". Collection of Papers - Faculty of Geography at the University of Belgrade. Volume 65, Issue ...Boban Pavlović, Milica Pešić-Georgiadis. "The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje" in 12th International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece, Energy Policy and Development Centre (KEPA) of the National and Kapodistrian University of Athens (2019)
-
Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15