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Упит dcterms_subject_txt:mature field

511 items

  • Primena termografije u rudarstvu

    Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić (2019)
    Danas, gotovo da nema oblasti u nauci i tehnici u kojoj se Infracrvena termografija ne primenjuje kao metoda za lociranje i praćenje zagrejanih objekata ili tela, beskontaktnu procenu temperature površina, i nedestruktivno ispitivanje materijala. U radu su prikazane mogućnosti i perspektive primene ove metode u oblasti rudarstva.
    infracrvena termografija, rudarstvo, monitoring
    ... primene ove metode u oblasti rudarstva. Ključne reči: infracrvena termografija, rudarstvo, monitoring Abstract Today, there is almost no field in science and technology in which Infrared thermography is not used as a method for locating and monitoring heated objects or bodies, contactless ...
    ... temperature estimation and non-destructive material testing. This paper presents the possibilities and prospects of applying this method in the field of mining. Key words: infrared thermography, mining, monitoring 1. Uvod Termografija, kao oblast nauke koja se temelji na zakonima zračenja ...
    ... Vol. 12, pp. 875-892, 2005. [5] Tomic Lj., Kovacevic A., Damnjanovic V., Osmokrovic P., Probability density function estimation of a temperature field obtained by pulsed radiometric defectoscopy. Measurement, Vol. 46, 2263-2268, 2013. [6] Lahiri B., Bagavathiappan S., Jayakumar T., Philip J., Medical ...

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... recent regional paleostress reconstructions indicate a stress field with variable orientations that formed during the gradual clockwise rotation around the Moesian Platform (Mladenović et al., 2019). However, how such a variable stress field is linked with the mechanics of regional and local deformation ...
    ... the Fig. 4. Geological cross sections across the studied area. Cross sections are built following the field observations and results of this study. Surface to depth projection is based on the field kinematic data from this study and the Basic geological map of former Yugoslavia, scale 1:100.000. Colors ...
    ... dreds of metres to 20 km) along their strike across the entire studied area (colored faults in Figs. 5, 7, 8 and 10). In the field, these major contacts are observed in the field by zones of intense deformation, such as meters- thick foliated fault gouges, intense faulting with large offset at outcrop ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... permit if there are indications that mineral resources are located outside the existing boundaries of the exploitation field [56]. The protective zone around the exploitation field required for the possible expansion of reserves and resources is de- fined in the exploitation permit and may be as follows: ...
    ... adoption of best possible techniques for geological exploration and estimation of resources/reserves. Therefore, we analyzed the actual practice in the field of geo- logical exploration which has not changed significantly in the last 30 years, as well as legislation related to the mining industry and access ...
    ... has undergone great changes in the political, societal, and economic fields in the last thirty years. The changes did not significantly affect the field of geological exploration and eval- uation of mineral resources/reserves and their classification, which is still causing some inconveniences, especially ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... carrying out all activities related to planning, design and decision-making in the field of geology. Within the project a web portal3 was established that allows quick and easy access to geological data and information in the field of general geology, ex- ploration of mineral deposits, hydrogeology and engineering ...
    ... consideration: title, field, keywords, and abstract, while for location criterion other fields are searched: municipality, county, name of the cartographic sheet, location and chronological number of the document, and the sheet signature. The search system takes into account the field where the keyword was ...
    ... 1. Thus, if search is performed with the location criterion Bor, documents in which Bor occurs in Municipality field will be better ranked than those in which it occurs in the Abstract field. The ranking of results is performed in descending order according to the total sum of the product of weight factors ...

  • Equilibrium and kinetic studies of the reactions between [Ru(terpy)(bipy)Cl]Cl complex and biologically important N-donor ligands

    Aleksandar Mijatović, Biljana Petrović, Ratomir Jelić, Živadin Bugarčić (2011)
    Studije u oblasti antikancerogenih karakteristika jedinjenja rutenijuma(III/II) izazivaju veliku pažnju već nekoliko godina otkako su neka od njih kao što su KP1019 (indazolijum-tetrahloridobis(H-indazol)rutenat(III)) i NAMI-A (imidazolijum) -trans-tetrahlorido(dimetilsulfoksid)indazolerutenat(III)) dostigao nivo kliničkog ispitivanja. Kompleksi rutenijuma u ​​reakciji sa molekulom DNK formiraju prvenstveno gvanin- i adenin-adukt, kao komplekse platine. Takođe, nekoliko studija ukazuje na veoma jake interakcije sa proteinima. Međutim, kompleksi Ru(III/II) pokazuju generalno manje toksične efekte od lekova platine(II).1 Proučavali smo kinetiku reakcija supstitucije kompleksa [Ru(terpi)(bipi)Cl]Cl sa biološki važnim ligandima: dimetilsulfoksidom, gvanozin-5’-monofosfatom, ...

  • Neogene to Quaternary geology of Fruška Gora (Serbia)

    Rundić Ljupko, Dulić Ivan (2011)

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... content. In the description data field a summarizing description of the resource is given. Once created, some resources can be further enhanced by contributors, that is, persons, organizations, or services, which are then specified in the contributor field. Another important feature of the resource ...
    ... development of the learning object and its current state, and originate from the LOM Standard. The version field designates the edition of the learning object, whereas the status field shows whether the resource is already active or pending submission, or maybe archived or even deleted. The ...
    ... achieved, enabling OER learners from both universities and enterprises to study educational materials at their own pace. Within the academic field, the BAEKTEL network will additionally contribute to the development of virtual mobility, as it will enable students to follow courses at universities ...

  • Flyrock induced by blasting in surface mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća

  • Процјена хазарда и ризика од клизишта за различите нивое просторног планирања у Републици Српској, БиХ

    Цвјетко С. Сандић (2022)
    Територија Републике Српске је у посљедних десетак година веома угрожена активирањем нових и реактивирањем старих клизишта. Она својим дјеловањем наносе огромне материјалне штете, па и људске жртве, те је неопходно озбиљније третирање и дјеловање у борби са овим природним хазардом. Чест проблем јесте одговорност, тј. надлежност институција из ове области и недостатак у законској регулативи која готово никако или само површно обрађује област хазарда и ризика од клизишта. Усљед непостојања праксе и усвојених методологија које су у примјени у свијету, циљ ...
    Kлизишта, склоност, хазард, ризик, процјена, просторно планирање, угроженост

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... of the mining waste field, the carrier of exploration and/or exploitation or economic entity that produces mining waste, the economic entity which is the operator of mining waste, the characterization and categorization of mining waste landfills within the mining waste field, as well as other data ...
    ... details of all rights owners in the database, while the class terrain_record models notes taken during field visits. The class multimedia is intended for photos and video records collected during field visits. The spatial polygonal class abandoned_facility describes the geometric parameters of the degraded ...
    ... control for specific data is based on a common vocabulary, integrated in the database and application. All data related to one company, like permits, field visit records, multimedia, described and contoured area, remote sensing data, can be retrieved and displayed, both on the map and in the form of a ...

  • Brief hydrogeology on the Dinaric karst with emphasis on the SE of the Adriatic basin

    Stevanović Zoran (2014)

  • Debris-flow Susceptibility Assessment in Flow-R: Ribnica River Case Study

    Ksenija Micić, Miloš Marjanović, Biljana Abolmasov (2024)
    Debris flows are among the most dangerous erosional geohazards due to the fast rate of movement and long runout zones. Even though the initiation can be triggered in mountainous areas, inhabited and with steep slopes, their propagation and deposition can endanger not only buildings and infrastructure in the urbanized areas, but also threaten human lives. As these initiation areas usually represent unattainable terrains with rapid vegetation cover development, field observations and aerial photo analysis become high-demanding tasks. Consequently, medium-to-regional ...
    tečenje drobine, Flow-R, procena podložnosti, empirijski model

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we present the design methodology of the hybrid ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we present the design methodology of the hybrid ...

  • Source rock investigations and organic geochemistry of a Cretaceous succession of the Outer Dinarides (Mokra Gora, Tara Mountain, SW Serbia).

    Neumeister Stefan, Banjac Nenad, Bechtel A. Gawlick Hans Jurgen (2013)

  • Listvenite from Serbia as Gemstone Resource

    Simić Vladimir, Šarić Kristina, Miladinović Zoran, Andrić Nevena, Vuković Nikola (2013)

  • More than 500 Ma of magmatic and tectonic evolution of the Serbo-Macedonian Massif (south Serbia, southwest Bulgaria and east Macedonia)

    Antić Milorad, Peytcheva Irena, von Quadt Albrecht, Kounov Alexandre, Trivic Branislav, Serafimovski Todor, Tasev Goran, Gerdjikov Ianko (2012)

  • Late Cretaceous bimodal igneous association of the northern Kozara Mts. revisited: New geochemical data serving for refined geodynamic interpretations

    Cvetković Vladica, Šarić Kristina, Grubić Aleksandar, Cvijić Ranko, Milošević Aleksej (2013)

  • Determination of wather loss from reservoirs in less permeable karst aquifer- case example of left bank of Lazici dam- western Serbia

    Jemcov Igor, Mladenović Ana, Pavlović Radmila, Trivić Branislav, Petrović Dragana, Petrović Rastko (2014)

  • Double traveling valve increases rod-pump efficiency

    Miloš Petrović, Bojan Martinović, Milica Ješić, Miroslav Crnogorac (2023)
    Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling valves installed in pumps with top mechanical seating. The valves sealed better and produced similar fluid volumes compared with the previous single-valve pumps. They also enabled a reduction in pump diameter and optimized usage of surface equipment. Overall, the double travel valve SRPs produced stable production rates and annual production targets.
    дубинска пумпа на клипним шипкама, производња нафте, ефикасност