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Упит dcterms_subject_txt:Insulating properties

362 items

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... ronomical Society, 62, 699–718.  Lowrie, W., 1990. Identification of feromagnetic minerals in a rock by coercitive and unblocking tempe‐ rature properties. Geophys. Res. Lett., 17, 159–162.  Luković, A.,  Zavašnik,  J., Vulić,  P., Banješević, M.,  Šarić,  K.,  Cvetković, V.,  Pačevski, A.,  2017. Hemoil‐ ...

  • NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands

    Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)
    Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...
    Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)

    Dušan Polomčić, Dragoljub Bajić, Jelena Zarić (2015)
    A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...
    Water supply, Aquifer, Flow, Groundwater regime, Numerical modeling, Particle tracking
    ... storage coefficient, specific storage, and effective porosity were adopted based on international reports [22-25], related to the hydrogeological properties of sediments with similar characteristics. Boundary conditions The following boundary conditions were specified in the hydrodynamic model ...
    ... Simulation of Flow and Advective Transport, Academic Press, San Diego, CA, 381p, 1992. 24. Rehm, B. W., Groenewold G. H. and Morin, K. A., Hydraulic Properties of Coal and Related Materials, Northern Great Plains, Ground Water, Vol. 18, No. 6, 551-561, 1980, http://dx.doi.org/10.1111/j.1745-6584.1980 ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... and rate of stone decay depend on these factors acting independently or more frequently together in different combinations, as well as of the properties of the stone itself, creating stresses that accumulate within stonework over time. Therefore, the rate of decay and weathering effects can vary ...
    ... fortress of Belgrade, 2nd edn, Javno preduzece “Beogradska tvrdjava”, Belgrade (in Serbian) Rothert E, Eggers T, Cassar J et al (2007) Stone properties and weathering induced by salt crystallization of maltese globigerina limestone. In: Prikry1 R, Smith B J (ed) Building stone decay: from diagnosis ...
    ... Siegsmund S, Sterflinger K (2011) Characterisation of stone deterioration on buildings. In: Siegsmund S, Snethlage R (eds) Stone in architecture, properties, durability, 4th edn. Springer, Heilderberg, pp 347—410 Siegesmund S, Weiss T, Volibrecht A (2002) Natural stone, weathering phenomena, co ...

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... electricity production is mainly related to specific tectonic regions, its direct use is more common. Coupling the energy potential with the healing properties of water’s temperature and chemical composition, is recognized as a versatile and efficient way of exploiting this geothermal resources [6–9]. Hot ...
    ... electricity production is mainly related to specific tectonic regions, its direct use is more common. Coupling the energy potential with the healing properties of water’s temperature and chemical composition, is recognized as a versatile and efficient way of exploiting this geothermal resources [6-9]. Hot ...
    ... (In Serbian) 12. Dokmanović, P.B.; Krunić, O.Ž.; Martinović, M.K.; Magazinović, S.M. Hydrogeothermal Resources in Spa Areas of Serbia: Main Properties and Possible Improvement of Use. Therm. Sci. 2012, 16, 21–30. [CrossRef] 13. Republic Agency for Spatial Planning of the Republic of Serbia. Spatial ...

  • Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog

    Maja D. Milošević (2016-12-09)
    Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...
    minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva
    ... Electrokinetic and rheological properties of Na- bentonite in some electrolyte solutions. Microporous and Mesoporous Materials 117: 331 - 338 Duran J.D.G., Ramos-Tejada M.M., Arroyo F.J. and Gonzalez-Caballero F. 2000. Rheological and electrokinetic properties of sodium montmorillonite suspensions ...
    ... of water in montmorillonite. Clays & Clay Miner. 42 (6): 702 - 716 Bodman S.W., Kodama S.P., Pfeil P.C and Stevens R.E. 1967. Solubility and properties of two crystalline phases of methylene blue. Journal of chemical and engineering data 12: 4 Borkovec M., Wu Q., Degovics G., Laggner P. and ...
    ... &user=yoRdi8AAAAAJ&citation_for_view=yoRdi8AAAAAJ:9yKSN-GCB0IC 115 Bujdak J. 2006. Effect of the layer charge of clay minerals on optical properties of organic dyes. A review. Applied Clay Science 34: 58 - 73 Bujdak J. and Iyi N. 2002. Visible spectroscopy of cationic dyes in dispersions ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... Systems (Vol. 6177, pp. 248-255): Springer Berlin Heidelberg. Justeson, J. S., & Katz, S. M. (1995). Technical ter- minology: some linguistic properties and an algo- rithm for identification in text. Natural Language Engineering, 1 (01): 9-27. doi:10.1017/S1351324900000048 Krstev, C. (2008). ...
    ... multiword expression prediction for grammar engineering. Proc. of the Workshop on Multiword Expressions: Identifying and Exploiting Underlying Properties. (pp. 36-44). Proceedings of the conference Terminology and Artificial Intelligence 2015 (Granada, Spain) 89 ...

  • Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia

    Оливера Крунић (2021)
    минералне воде

  • Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems

    Dejan Ćebić, Nebojša M. Ralević (2021)
    нелинеарне једначине, поступци засновани на срединама, вишеструки корени,

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
    ... whereas the highest reactivity shows thiourea compared to the other used ligands. Thiourea is a very useful nucleophile since it combines the ligand properties of thiolates (r-donor) and thio- ethers (r-donor, p-acceptor) [22,24] so it shows the strongest nucleophilicity. Our results confirm this explanation ...
    ... whereas the highest reactivity shows thiourea compared to the other used ligands. Thiourea is a very useful nucleophile since it combines the ligand properties of thiolates (o-donor) and thio- ethers (o-donor, m-acceptor) [22,24] so it shows the strongest nucleophilicity. Our results confirm this explanation ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... acid (FA) composition of the source triglycerides and it determines some critical properties of biodiesel, like viscosity, density, low temperature properties, oxidation stability, etc. Relationships between properties of biodiesel and its FAME contents have been reported previously (Giakoumis 2013; ...
    ... Biodiesel Resources and Comparison of Their Fuel, Engine and Emission Properties.” Renewable and Sustainable Energy Reviews 43: 495—520. doi:10.1016/j.rser.2014.11.049. Tang, H., S. O. Salley, and K. Y. Simon Ng. 2008. “Fuel Properties and Precipitate Formation at Low Temperature in Soy-, Cottonseed- ...
    ... Kašić, Vladan. 2014. Zeolite deposits and occurrences in Serbia – an overview. ZEOLITE 2014, 9th International Conference on the Occurrence, Properties and Utilization of Natural Zeolites, Belgrade, Serbia, 8-13 June 2014, 217-218. Simić, Vladimir, Abramović, Filip, Andrić, Nevena, Delić, Ivana ...

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... with HfNiGa2-Type Structure: Synthesis, Structure, and Physical Properties. Chemistry of materials, 16(3), p.466-476. [52] Freeman, A.J. and Watson, R.E., 1962. Theoretical investigatiton of some magnetic and spectroscopic properties of rare-earth ions. Physical Review, 127(6), p.2058. [53] Johansson ...
    ... Rare-earth elements market: A historical and financial perspective. Resources Policy, 53, p. 26-45. [5] Jha, A.R., 2014. Rare earth materials: properties and applications. CRC Press. [6] Dutta, T., Kim, K.H., Uchimiya, M., Kwon, E.E., Jeon, B.H., Deep, A. and Yun, S.T., 2016. Global demand for ...
    ... electrons in solids. John Wiley & Sons. [29] Schulten, H.R. and Leinweber, P., 2000. New insights into organic-mineral particles: composition, properties and models of molecular structure. Biology and Fertility of Soils, 30, p.399-432. [30] Nash, K.L., 1993. A review of the basic chemistry and ...

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... influence of toxic metal ions on the activity of extra- cellular enzymes is scant and controversial. Variability of data results from the chemical properties of the element and the formation of various chemical species, depending on the pH, ionic strength, presence of competing elements and complexing ...
    ... partly absorbed from the mammalian gastrointestinal tract. It was noted that the gastrointestinal fluids have their own intrinsic metal binding properties, especially for copper (27) and iron (3%). It is known that AP?* ions interact with CaŽ — and Mg?Ž"-dependent enzymes. Binding of AP? ion with ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... EQUATION Rock mass oscillation velocity equation defines velocity alteration of rock mass oscillation depending on distance, explosive amount, properties of rock material and blasting method. The equation, defined in this way, offers the possibility to determine the seismic effect of blasting towards ...

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... cover, as well as the spatial distribution of the estimated temperatures in the Triassic reservoir. Still, uncertainty remains about the hydraulic properties and storativity of the limestone aquifer in the basement of the Miocene basin. 2. GENERAL SETTINGS 2.1. Study area The presented research ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... and (d) Manual. Detailed information about a mine site are shown in a separate page and are grouped into the following sections: general data, properties, registry, owner (stakeholder) and multimedia. A small dynamic map of the surrounding area of the selected mine site with a zoom in possibility ...
    ... Data Analysis Within the reporting system the following reports are available: ‚ Reports giving data on individual abandoned mines (general data, properties, registry, rights owner, coordinates, assessments) ‚ Register of abandoned mines by municipalities (city, locality, cadastral parcel, rights owner ...

  • Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit

    Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić (2015)
    ... N LAW To establish the correlation between the oscillation velocity and three basic parame- ters affecting its size: the explosive quantity, properties of rock material and the distance, there have been developed several mathe- matical models in the world. One of most frequently used models, i ...
    ... which could be attributed to the effect of small faults and carstified cracks in the de- posit. By examination the physical and me- chanical properties of the working environ- ment, the following values are obtained: No. 3, 2015 Mining & Metallurgy Engineering Bor 58 - angle of internal ...