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Упит dcterms_subject_txt:road design

307 items

  • Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika

    Saša M. Jovanović (2016-05-16)
    Investiciono okruženje skopčano sa rudarskom industrijom je veoma svojstveno kada seuporedi sa okruženjima koje susrećemo u tipičnim proizvodnim industrijama. Neke odkarakterisitka rudarstva, koje su često naznačene kao jedinstvene su: visok intenzitetinvesticija, dugi predproizvodni periodi, visok rizik i neobnovljivost resursa.Investiranje u sistem otvaranja rudnika predstavlja dobar primer ireverzibilneinvesticije. Takva investicija zahteva pažljivu analizu, jer nakon njene realizacije ona sene može nadoknaditi bez značajnog gubitka vrednosti. Očigledno je da izbor sistemaotvaranja podzemnog rudnika pripada strateškom planiranju...
    otkopavanje; otvaranje; mreže i grafovi; fuzzy skupovi; stohastičkiprocesi; indeks konveksnosti; sistemi podrške odlučivanju
    ... Thomas, D.A.(2007) Network Optimization for the Design of Underground Mines, Networks-DOI10.1002/net, 40-50. [6] Brazil, M., Lee, H., Rubinstein, H., Thomas, D., Weng, J., Wormald, C., et al. (2000). Network optimization of underground mine design. The AusIMM Proceedings 1, 57-65. [7] Brazil ...
    ... network interconnecting all access points with surface breakout point, using the minimum cost of development and haulage. The major task is to design the lowest cost-feasible development system, respecting all operational constraints. In many cases, conditions prevailing on the surface and ...
    ... Brazil, M., Thomas, D.A and Weng, J.F (1998). Gradient Constrained Minimal Steiner Trees, in Network Design: Connectivity and Facilities Location (DIMACS Series in Discrete Mathematics and Theoretical Computer Science, 40) American Mathematical Society: Providence, 23-38. [8] Brimberg, J., Juel, H ...

  • Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma

    Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković (2013)
    ... tumor extension were demonstrated after TT should receive RAI. Although it is not likely that a randomized trial can be performed, an appropriate design of such a trial should define the criteria for the surgical approach to be used as well as a staging/risk system for patient classification and to ...

  • The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA

    Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski (2017)
    Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...
    Pd(II), Selen, Substitucija, Kinetika, Mehanizam

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... data sets and with other LOD resources [46]. In our research we were also aiming at compatibility with the Linked Data approach, using its set of design principles for sharing machine-readable interlinked data on the Web. This vision of globally accessible and linked data on the internet is based on ...
    ... Šandrih for feature extraction from usage examples. Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... ity for road construction. Thermochimica Acta, 498 (2010), 1-6, www.elsevier.com/locate/tca. TOKALIC R., MARINKOVIC S., TRIFUNOVIC P., DEVIC G., ZILDZOVIC S., 2013: Prelimi- nary Examination of the System Fly Ash–Bottom Ash–Flue Gas Desulphurization Gypsum–Portland Cement–Water for Road Construction ...
    ... PEJIĆ M., BOŽIĆ B., ABOLMASOV B., GOSPAVIĆ Z., 2013: Design and optimisation of laser scanning for tunnels geometry inspection. Tunnelling and Underground Space Technology 37 (2013), 199–206. DOI: 10.1016/j.tust.2013.04.004. Corrigendum to „Design and optimisation of laser scanning for tunnels geometry ...
    ... TRIFUNOVIC P., ZILDZOVIC S., 2013: Preliminary Examination of the System Fly Ash-Bottom Ash-Flue Gas Desulphurization Gypsum-Portland Cement-Water for Road Construction. Journal of Chemistry, str. 1–7. MILUTINOVIĆ A., GANIĆ A., RAYES DIYAB TH., TOKALIĆ R., GANIĆ M., 2015: Mine surveying works for the ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... compounds was added. The procedure for automatic construction of entries for a DELAC dictionary is based on a set of rules [10]. The rule design strategy results from expert knowledge on morpholo- gy and the analysis of an already existing, manually created compound dictionary. The task of ...

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • 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
    ... Silva AM, Erickson JVXW. Crystal structures of native and inhibited forms of human cathepsin D: Implications for lysosomal targeting and drug design. Proc Nat Acad Sci USA 1993;90:6796—6800. 4] Blundell'TL, Jenkin J, Sewell BT, Pearl LH, CooperJB, Tickle1J, Veerapandian B, Wood SP. X-ray analyses ...

  • Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda

    Đorđije M. Božović (2023)
    Predmet istraživanja doktorske disertacije su bunari sa horizontalnim drenovima beogradskog izvorišta podzemnih voda, drugog najvećeg izvorišta ovog tipa na svetu, čiji je režim rada opterećen procesima intenzivnog starenja prisutnog od samog početka formiranja izvorišta, početkom 1950‒ih godina. Istraživanja sprovedena u okviru izrade disertacije su imala za cilj definisanje nove metodologije izučavanja procesa mehaničkog i biohemijskog kolmiranja drenova izradom detaljnih 3D numeričkih hidrodinamičkih modela, upotrebom postojećih, dostupnih i široko rasprostranjenih računarskih programa. Istraživanja su realizovana simulacijom ostvarenog režima podzemnih voda ...
    modeliranje podzemnih voda, hidrauličke karakteristike drenova, koeficijent propusnosti drenova, prifilterska zona drena, hidraulički otpori na drenovima, kolmiranje drenova, ulazne brzine podzemnih voda, MODFLOW, CLN Package
    ... Doktorska disertacija 7 LITERATURA 1 Ahmed, N., Taylor, S.W., Sheng, Z., 2014. Hydraulics of Wells: design, construction, testing, and maintenance of water well systems. Task Committee on hydraulics of wells. DOI: 10.1061/9780784412732 2 Anderson, M ...
    ... groundwater sources. Water Research and Management, Vol. 4, No. 4, 3–23. 51 Dimkić, M., Pušić, M., 2016a. Application of a 3D model to determine design criteria for radial wells at Belgrade’s groundwater source; Dimkić, M., (Ed.), IWA specialists groundwater conference, 09–11 June 2016, Belgrade ...
    ... riverbank filtration. Water, 8 (12), 604. DOI: 10.3390/w8120604 71 Grischek, T., Schoenheinz, D., Ray, C., Melin, G., Linsky, R., 2002. Siting and design issues for riverbank filtration schemes; Ray, C., Melin, G., Linsky, R.B., (Eds.), Riverbank Filtration: Improving Source–Water Quality, 43, 291–302 ...

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction
    ... aim of research is to test the possibility of using the fly ash from PPNT A for making elements of road structures (top and bottom layers of the road). Fly ash can be used to create elements for road structures, but it must be taken into account that the embedding is done in segments, isolated from ...
    ... of elasticity. The aim of research is to test the possibility of using the fly ash from PPNT A for making elements of road structures (top and bottom layers of the road). 2 Experimental 2.1 Mineral properties of fly ash Mineral properties of samples of fly ash from thermal plant PPNT ...
    ... fly ash from PPNT A can be used to create elements for road structures. It must be taken into account that the embedding is done in segments, isolated from the influence of surface water and groundwater, because with this, in terms of road operation, it prevents the leaching of harmful chemicals ...

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    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 ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... .mre.gov.rs/doc/efikasnost- izvori/NREAP%20OF%20REPUBLIC%20OF%20SERBIA%2028_June_2013.pdf?urisCELEX:32009L0028). Rich Paul M., Fu Pinde, 1999. Design and implementation of the Solar Analyst: an ArcView extension for modeling solar radiation at landscape scales. Proceedings of the 19th Annual ESRI ...

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... writing:— original draft preparation, L.V.; writing—review and editing, L.V., S.M. and T.D.; visualisation, L.V. and S.M.; supervision, T.D.; research design and funding, acquisition, L.V.; project administration, L.V. AlI authors have read and agreed to the published version of the manuscript. Funding; ...

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Анализа рада гас лифта на нафтном пољу К

    Тамара Бркан (2024)
    Анализа рада гас лифта укључује детаљну процену перформанси, идентификацију проблема, симулацију и моделирање, као и опримизацију и прилагођавање система. Циљ је осигурати да гас лифт функционише ефикасно уз повећање производње и уз што мање оперативне трошкове. У даљем тексту биће описана анализа рада гас лифта на нафтном пољу К, као и поређење најекономичнијег решења.
    поврмени гас лифт, континуални гас лифт, оперативни вентил, компримован гас
    ... Publishing Co Tusla 5. BROWN, K. E., 1980. 7he tehnology of Artificial Lift Metods 4. Petroleum Publishing Co Tusla 6. SCHLUMBERGER, 1999. Gas Lift Design and Technology 36 O0pasau 1 H3JABA O AYTOPCTBY 3ABPII(IHOT PAJIA Hwe H ripe3HMe cTyJleHTa Tamapa BpkaH Bpoj HHJeKca P3/20 Hy3jaBMPbyjeM ...

  • Opremanje bušotine X zavojnom pumpom

    Milan Filipović (2024)
    Ovaj rad se bavi osnovnim pojmovima i karakteristikama zavojnih pumpi.Prikazan je sklop zavojnih pumpi i njena prateća oprema. Objašnjen je princip rada zavojnih pumpi kao i uloga svakog mašinskog elementa koji se nalazi u pumpi. Razmotrene su prednosti i nedostaci primene ovih primarnih mehaničkih metoda eksploatacije ugljovodonika. Dat je uvid u inovativna rešenja problematike primene zavojnih pumpi. Na konkretnom primeru bušotine X su prikazani problemi kao i rešenja primene ovih primarnih mehaničkih metoda u praksi. Napravljena je detaljna analiza ...
    zavojne pumpe, oprema, primarne mehaničke metode, ugljovodonici, analiza rada
    ... uipment-and-services/wellhead-junction-box • Crane Engineering, Kimberly, 2024, https://blog.craneengineering.net/new- progressive-cavity-pump-design-makes-maintenance-a-breeze • Zhu,J. & Zhang H.Q. (2018). "A Review of Experiments and Modeling of Gas&Liquid Flow in Electrical Submersible Pumps" ...

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... VESTA (Momma & Izumi, 2011). 2.3. Magnetic measurements (SQUID magnetometry) The magnetic properties of K3YbSi2O7 were investigated using a Quantum Design MPMS-XL-5 susceptometer equipped with a SQUID sensor. The temperature dependen- cies of the magnetic susceptibilities were measured over the temperature ...
    ... VESTA (Momma & Izumi, 2011). 2.3. Magnetic measurements (SQUID magnetometry) The magnetic properties of K;YbSi.O7 were investigated using a Quantum Design MPMS-XL-S5_ susceptometer equipped with a SQUID sensor. The temperature dependen- cies of the magnetic susceptibilities were measured over the temperature ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... (eco) toxic elements (PTEs) in road dust from metropolitan area of Hefei, China. Chemosphere,181, 111–121. [16] Gabarron, M., Faz, A., Acosta, J.A. (2017a). Effect of different industrial activities on heavy metal concentrations and chemical distribution in topsoil and road dust. Environ. Earth Sci., 76 ...
    ... Langella, C. (2016). Study and development of of concept of auxetic structures in bio-inspired design. International Journal of Sustainable Design, 3(1), 20-37. [9] Fan, H., Yang, L., Tian, Y., Wang, Z. (2020). Design of metastructures with quasi-zero dynamic stiffness for vibration isolation. Composite ...
    ... Envir. Pollution, 142, 1-16. [11] Amato, F., Pandolf, M., Escrig, A., Querol, X., Alastueya, A., Pey, J., Perez, N., Hopke, P.K. (2009). Quantifying road dust resuspension in urban environment by Multilinear Engine: A comparison with PMF2. Atmospheric Environment, 43 (17), 2770-2780. [12] Saeedi, M ...

  • Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite

    Philippe Colomban, Aleksandar Kremenović (2020)
    Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...
    asbestos, CMC, Corsica, fiber, pottery
    ... ceramic gives rise to a brittle edge, and fracture initiation depends upon the defects and their distribution in the matrix. It is thus difficult to design the shape and mechanical strength of a ceramic object. However, the association of two brittle materials, i.e., a composite material, can give ...