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Упит dcterms_subject_txt:in situ

366 items

  • Remedijacija otpadnih voda Rudnika prirodnim zeolitom

    Igor Veličković (2024)
    U radu je razmatrano prečišćavanje otpadnih flotacijskih voda sa područja rudnika Rudnik prirodnim zeolitskim tufom sa planine Jastrebac. Prečišćavanje otpadnih flotacijskih voda sa područja rudnika Rudnik prirodnim zeoliskim tufom sa obronaka planine Jastrebac pokazala se veoma efikasnom. Naime, u tri otpadne flotacijske vode utvrđen je povišen sadržaj arsena, hroma, gvožđa, mangana, kao i nikla. Jednostavnim tretmanom zeolitskim tufom iz ovih voda uklonjeni su svi ovi elementi. Sadržaji gvožđe i mangana su sniženi od 95 do 99 %, dok su ...
    flotation waste water, zeolite tuff, purification
    ... ore deposits in Yugoslavia. In: Exp. Memoir of the Metallogenic Map of Europe, 1:2500000. UNESCO, Paris, pp. 385—395. Janković, S., 1990. Ore Deposits of Serbia. University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, pp. 760 (in Serbian, with extended abstract in English). ...
    ... : Use of Natural zeolites in Agriculture and Aquaculture, Westview, Boulder, CO, 59, 1320. Robertson, A.H.F., Karamata, S., Šarić, K., 2009. Overview of ophiolites and related units in the Late Palaeozoic-Early Cenozoic magmatic and tectonic development of Tethys in the northern part of the Balkan ...
    ... (Shoumkova, 2011). Zbog svojih jedinstvenih svojstava, zeoliti su našli široku industrijsku primenu kao katalizatori, adsorbenti, molekularna sita i jJonski izmenjivači sa rastućim svetskim tržištem, procenjenim na oko 4 miliona tona u 2010. Korišćeni su u velikom broju procesa tretmana kao ...

  • Genesis and metallogenetic setting of the polymetallic barite-sulphide deposit, Bobija, Western Serbia

    Marcel Maurer, Dejan Prelević, Regina Mertz-Kraus, Aleksandar Pačevski, Bojan Kostić, Jovana Malbašić (2019)
    Trejs elementi u sfaleritu, izotopi sumpora, datiranje cirkonom, SEDEX, SHMS, dominantno klastični Pb-Zn, sulfidi, ležišta

  • Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area

    Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić (2016)
    jurski sedimenti, uran, torijum, elementi retkih zemalja, podzemna voda, istočna Srbija

  • 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
    ... Monitoring in situ Biodegresation and Retardation of Aromatic Hydrocarbons, Ground Water, Vol. 33, No. 3, 469-475, 1995, http://dx.doi.org/10.1111/j.1745-6584.1995.tb00303.x 26. Babac, D., Study on the Analysis of the Local Water Resources of the Deep Aquifer of the “Šumice” Water Source in Kikinda ...
    ... significant issue in every society. It is of vital importance to control and monitor the operation of each water source. Unfortunately, there are many problems. Even when the required legislation is in place, it is sometimes impossible to implement it in practice, not only in the case of existing ...
    ... wells (Figure 2) have been drilled in the study area [18]. According to the type of porosity and hydrodynamic characteristics, there are two types of aquifers in this region: confined and unconfined, both in Quaternary sands. The unconfined aquifer was formed in Quaternary alluvial sands. The depth ...

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)
    ... proces donošienje konačan odluka Text: estim of the qualiti of built-in concret by the ultrasound observ. thi paper present result of the propag veloc investig of ultrasound wave in the concret construct so call non-destruct method in situ due to inspect of concret qualiti that is inbuilt into the bodi of ...
    ... keyword extraction on parallel texts written in two languages. In addition, in this work we test whether the SBKE method is portable to a new language, in this research Serbian (in addition to Croatian and English [8]), to a new domain of geology and mining (in addition to domains of news and technical ...
    ... usually define keywords in their lemmatized form, while in the Serbian texts (and rarely in English) they appear in many inflected forms, which are different from lemma. Bilingual Serbian-English KE dataset introduced in this paper is publicly available from http://langnet.uniri. hr/resources.html. The ...

  • Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites

    Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)
    To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...
    Perovskite/spinel ceramics, Multiferroic, Sintering, Influence of synthesis method

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... very often not economically attractive, companics in these situations tend to combust the produced gas on the production site directly. This process lcads to significant emissions of CH+, and CO». Aside rom intentional flaring at the production site, the flaring process can take place during hydrocarbon ...
    ... scaled to Methanc content in the facility-associated gas composition before bcing applied. Additionally, CO>» can also be released from fugitive sources if CO, is present in the gas stream. In this case, the Methane emission factor is scaled based on CO» content in thc gas stream. 4ctuall CHa ...
    ... 70000 ! - In recent years, thc accurate estimate and reporting of GHG emissions has becomc increasingly important in the O&G industry. This is due in part to growing concerns over climate change and thce nced to mitigate its effects. As a result, O&G companies are investing more cffort in improving ...

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

    Nikoleta Aleksić (2021)
    ... 1. Perelo, L.W., 2010. Review: In situ and bioremediation of organic pollutants in aquatic sediments. Journal of Hazardous Materials 177, 81–89. 2. Nyholm, J.R., Lundberg, C., Andersson, P.L., 2010. Biodegradation kinetics of selected brominated flame retardants in aerobic and anaerobic soil. En ...
    ... carbon amendment for in-situ stabilization of polychlorinated biphenyls in marine sediment. Environmental Science & Technology 43, 3815–3823. 12. Cho, Y.M., Werner, D., Choi, Y., Luthy, R.G., 2012. Long-term monitoring and modeling of the mass transfer of polychlorinated biphenyls in sediment following ...
    ... parent-and alkylated-polycyclic aromatic hydrocarbons in petroleum-impacted sediments. Environmental Science & Technology 47, 1024–1032. 19. Choi, Y., Cho, Y.M., Luthy, R.G., 2014. In situ sequestration of hydrophobic organic contaminants in sediments under stagnant contact with activated carbon ...

  • Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata

    Dejan N. Radivojević (2014-12-30)
    Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...
    Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika
    ... formation in a very curved orogen: Evidence from fission track studies in the South Carpathians (Romania), Tectonophysics, v. 404, p. 33–53, doi:10.1016/j.tecto.2005.03.019. Gagić, N., 1985–1994, Izveštaji o mikropaleontološkim ispitivanjima jezgara i proba sa vibro‐sita iz bušotina ...
    ... tectonic history of the Carpathians, in The Pannonian Basin L A Study in Basin Evolution, edited by L. H. Royden and F. Horváth, AAPG Mem., v. 45, p. 17–26. Savić, Lj., 1993–2003, Izveštaji o mikropaleontološkim ispitivanjima jezgara i proba sa vibro‐sita iz bušotina u Vojvodini, Fondovska ...
    ... Regionalno‐stratigrafski prikaz 39 globigerinele, herohelicide). Starost ovih tvorevina nije precizno utvrđena zbog potpunog odsustva in situ fosila. Na osnovu prisustva pomenutih fragmenata gornjosenonskih krečnjaka, može se zaključiti da ova gruboklastična serija ima po ...

  • Elektromagnetska sprega sistema litosfera-atmosfera-jonosfera

    Aleksandra B. Kolarski (2016-08-25)
    Radio talasi vrlo niskih frekvencija VLF (eng. Very Low Frequency) frekventnog opsega od 3 do 30 kHz, koji se prostiru talasovodom Zemlja-jonosfera (50 -90 km) su, kao što je poznato, efikasni i nezamenljivi u osmatranju pojava u niskoj jonosferi, sa tla...
    prostiranje talasa vrlo niskih frekvencija, talasovod Zemlja-jonosfera, globalno električno kolo, atmosfersko električno pražnjenje, kratkotrajne svetlosne pojave
    ... saglasnosti sa rezultatima proračuna na osnovu drugih modela niske jonosfere, kao i sa rezultatima merenja primenom različitih tehnika, sa tla i “in situ”. Ključne reči: Prostiranje talasa vrlo niskih frekvencija, Talasovod Zemlja-jonosfera, globalno električno kolo, Atmosfersko električno ...
    ... srednja vrednost električnog polja oko 100 V/m (Mauchly, 1923; Hoffman, 1923). Integracijom vertikalnog električnog napona sa visinom (merenog “in situ” pomoću balona i letilica) dobija se razlika napona između jonosfere i Zemlje - jonosferski potencijal, sa srednjom vrednošću 250 kV (Markson, ...
    ... Satelit Demeter na orbiti od 700 km, namenjen prvenstveno za praćenje emisije ELF i VLF talasa koje emituju “zviždući” atmosferici, zabeležio je “in situ” elektromagnetske efekte koji potiču od sprajtova (Blecki et al., 2009). Dva sprajta snimljena su kamerom, 20. jula 2007. godine u 20:10:08 UT ...

  • Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia

    Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)
    The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...
    hydrogeological characteristics, water regime, water balance, karst aquifer, Resava catchment area
    ... indices (BFI). In the select- ed years, the BFI at the Manasija Monastery was 3 to 9% higher, suggesting that the karst massif had considerable dynamic reserves, which recharged the Resava River during dry periods. The year 2001 was an exception, whcn the situation was the oppo- site. Namely, the ...
    ... karst. The same applies to dry years but in that case the specific runoff in the upper catchment ofthe Re- sava River is twice the specific runoff in the entire catchment in the same dry ycar, or the arca covcred by the gauging station at Svilajnac. However, in wet years the situation is opposite. ...
    ... types of aquifers in the study arca. https://bgd.bg/review-bgs 1. Intergranular aquifers in the central and western parts of thc study area, formed in Quater- nary and Ncogene sediments. Thcy are recharged by infiltration of precipitation, water from surface strecams, and in part by karst aquifer ...

  • Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина

    Aлександар Додеровић (2024)
    Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...
    оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритам

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... and their application for biocementation of sand. World J. Microbiol. Biotechnol. 2013, 29, 1453–1460. [CrossRef] 17. Al-Thavadi, S. High Strength In-Situ Biocementation of Soil by Calcite Precipitating Locally Isolated Ureolytic Bacteria. Ph.D. Thesis, Murdoch University, Perth, Australia, 2008. 18 ...
    ... 1691 2 of 20 a historical site [6]. The high rate of self-healing effect of mortar was achieved using granu- lated denitrifying soil microbial culture [7], while Achal et al. [8] performed a phenotype modification of Sporosarcina pasteurii with UV radiation, which resulted in the alkaline resis- tant ...
    ... were previously reported in scientific literature and described characteristics are in correlation with the obtained in this study. Briefly, B. muralis isolated from historical building material [31], as well as soil isolates B. muralis and B. licheniformis showed high potential in inducing precipitation ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • 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

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... registrovano GPS kordinatama. Izvršena su in situ merenja oksido–redukcionog potencijala (ORP), pH vrednosti i temperature podzemnih voda, pomoću paketa terenskih instrumenata WTW pH 3110 SET 2 i Electrode Sen Tix ORP 100 °C. ORP vrednosti koje su merene in-situ su korigovane prema standardnoj vodonikovoj ...
    ... Yardley B, Bordnar R. 2014. Fluids in the Continental Crust. In: Oelkers EH (eds.). Geochemical Perspectives 3(1). European Association of Geochemistry, EAG. 181. Zachara J, Brown C, Christensen J, Davis JA, Dresel E, Liu C, Kelly S, Mckinley J, Serne J, Um W. 2007. A Site-Wide Perspective on Uranium ...
    ... >197 mV, izdvojena prethodnom ROC analizom sa zadovoljavajućim odnosom senzitivnosti i specifičnosti: Se 76.9, Sp 61.2);  pH vrednost kao in situ merena varijabla (kako bi se povećala preciznost modela, pošto na osnovu ROC analize kriterijum za pH nije izdvojen sa velikom AUC vrednošću); ...

  • Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B"

    Tomislav Trpković (2024)
    Predmet ovog rada baziraće se na proračunu i usvajanju mašinskih instalacija potrebnih za nesmetano funkcionisanje sistema dve međusobno povezane celine Absorber - Pumpna stanica, preko FRP ( Fiberglass Reinforced Plastic) cevovoda kojim se odvija transport suspenzije krečnjaka neophodnog u samom procesu odsumporavanja dimnih gasova. Pored tehničkog opisa same tehnologije koja uključuje tri objekta: Absorber, Pumpna Stanica i cevovod, glavni deo rada odnosiće se na proračun i usvajanje mašinskih instalacija koji uključuju recirkulacione radijalne centrifugalne pumpe i cevovode kojima ...
    postrojenje za odsumporavanje dimnih gasova, termoelektrana, pumpna stanica, FRP cevovod, Absorber, transport suspenzije gipsa, prirubnica, ventil, potisni cevovod, usisni cevovod
    ... the Pump Station, connected by FRP (Fiberglass Reinforced Plastic) pipelines that transport the gypsum suspension essential in the flue gas desulfurization process. In addition to the technical description of the technology itself, which includes three facilities: the Absorber, the Pump Station ...
    ... paper will include a technical description of the Pump Station, explaining in detail the operation of the transport of the limestone and gypsum suspension through the recirculating pumps and pipelines to the Absorber. In the final part of the paper, attention will be given to the calculation and ...
    ... T komad 1.3 5 |6.5 T komad 1.5 '} |D T komad 1 D } Pregradni ventil D.17 O |O Nepovratni ventil a O |O Leptirasti ventil 0.24 |2 D.48 Sito 10 D |} Protokomer |7 '} |D TOTAL koef otpora 12.73 Proračun Gustina suspenzije pp=1000*100/{Cw/ps+(100-Cw)/(pl/1000)) pp kg/mš |1095.9 Unutrašnji ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of ...
    ... ISSMGE. The paper was published in the proceedings of the 13th International Symposium on Landslides and was edited by Miguel Angel Cabrera, Luis Felipe Prada-Sarmiento and Juan Montero. The conference was originally scheduled to be held in Cartagena, Colombia in June 2020, but due to the SARS-CoV-2 ...
    ... Hydrodynamics) is a mesh- less approach, widely used in different fields of research, and it is found very suitable in different parts of fluid mechanics. Its main difference from other most used methods like finite element and finite difference methods, is in absence of numerical grid, and while mass is ...