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Упит dcterms_subject_txt:ratio of modified secondary and primary compression index

2944 items

  • Горњокредне творевине северозападне Србије

    Bojan M. Glavaš-Trbić (2013-11-26)
    У раду су приказане палеогеографске карактеристике и геотектонски положајширег подручја (Јадарског блока и Вардарске зоне) које су утицале на условеталожења, односно карактеристике горњокредних творевина на простору данашњесеверозападне Србије.Описани су карактеристични локални геолошки стубови уз приказ њиховихлитолошких, биостратиграфских и седиментолошких карактеристика. При томе сукоришћена досадашња сазнања о предметном простору изложена у домаћим радовима,и извршена је компарација и корелација са подацима суседних терена, ширеперитетиског ареала.Истраживања у првој фази су вршена на међусобно удаљеним и релативномалим профилима – често само ерозионим крпама ...
    горња креда, стратиграфија, микрофосили, макрофосили, Јадарскиблок-Вардарска зона, СЗ Србија
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  • Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке

    Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић (2018)
    ...  (N). The degree of homo‐ geneity is the measure of the decrease of the intensity of the magnetic field with the distance from the  source of the anomaly. For simple models, it is interpreted as a structural index (Thompson, 1982) and  defines the type of targets used in the O3DD procedure (Reid et al ...
    ... or gives the exact positions of the edges of the source, while with the Standard Method  the area covered by solutions is somewhat broader.  In the case of deeper sources, it was necessary to change the value of the structural index for a  more accurate determination of the depth. The Standard O3DD ...
    ... elected with two levels of  peak detection with a structural index of 0.5 considered most suitable for contacts (Ried et al., 1990). A  normal level of detection of peaks was used, which included only the maximum values in the analytical  signal network (all adjacent cells of the network have a  lower value) ...

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • Funkcionisanje i uticaj epikarsta na režim, bilans i kvalitet podzemnih voda istočnog dela karstnog sistema Suve planine

    Branislav Z. Petrović (2020)
    Epikarst je deo karstne izdani koji se nalazi u okviru nadizdanske zone i predstavlja kompleksnu tačku dodira i mešanja nekonsolidovanog materijala sa površine terena, ostataka karbonatnih stena izmenjenih korozivnim delovanjem vode, živog sveta i njihovih ostataka, koja je delimično zasićena podzemnom vodom. Kompletan sud o stepenu razvoja i prisustva epikarsta na nekom krečnjačkom terenu moguće je doneti uz multidisciplinarna i obavezna detaljna hidrogeološka istraživanja. Poligon za sprovedena istraživanja je bio karstni masiv Suve planine, koja u geološkom i geografskom smislu ...
    epikarst, karstni sistem, podzemne vode, procesi samoprečišćavanja, hidrohemijski i mikrobiološki procesi u podzemnoj vodi

  • Application of the geodiversity index for assessment of geodiversity in urban areas: an example of the Belgrade city area, Serbia

    Ilić Marina, Stojković Sanja, Rundić Ljupko, Ćalić Jelena, Sandić Dejan (2016)

  • Application of geological strength index for characterization of weathering-induced failures

    Berisavljević Zoran, Berisavljević Dušan, Rakić Dragoslav, Radić Zoran (2018)

  • 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

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... development of natural gas sector based of historical trends and Action plan [5] are used as example of model analysis. These scenarios are than modified in sense of determination of energy security and assessment of the highest level of 2 environmental acceptability. Comparison of anticipate emissions ...
    ... change of load, downtime, etc.), which causes an increase in emissions. It is characteristic of the thermal power plants that the primary process of such plants is the combustion of fossil fuels for the production of thermal energy, and very careful consideration is given to the modes of operation ...
    ... d that the emission of CO2 and other pollutants, with investment costs being indispensable partial indicators of observation. The aspect of social indicators, with partial indicators of social acceptability and provision of comfort, is increasingly used in the evaluation of the energy scenario ...

  • 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
    ... diagram of the novel design concept The outlined system (Figure 3) permits an aerodynamic definition of mine ventilation network based on psychrometric recordings and the use of ResNet software, i.e. the establishment of actual aerodynamic resistance of mine chambers and thus the configuration of the ...
    ... detailed analysis of necessary airflow volumes for the ventilation of individual workplace locations, often with a very complex geometry. The application of CFD software improves the reliability and quality of the apprehension and verification of air amounts needed for the ventilation of workplaces. ...
    ... estimation of gas and dust emission and temperature conditions flow process modelling using CFD Data acquis ition ventilation and psychrometric parameters ventilation and psychrometric parameters Fig. 3. Architecture of the hybrid system INVENTS 3. Software implementation of INVENTS The ...

  • Structural characterization of traditional pottery produced from local clay, Rujište (Ražanj, Central Serbia), in an effort to preserve its geoheritage

    Maja Milošević, Biljana Đorđević, Alena Zdravković (2021)
    ... cases, coatings of iron oxide are observed on the grains of minerals. There is a uniformity in the ratio of coarse-grained particles and the fine-grained fraction in the basic mass. Microcrystalline clasts could not be accurately identified. An X-ray powder diagram of the sample and database search ...
    ... with a detector for secondary electrons (SE), back-scattered electrons (BSE), modern energy-dispersive spectrometer (EDS), a wavelength-dispersive spectrometer (WDS) and a cathodoluminescence detector (CL) were applied to determine the morphology and grain size assessment of minerals as well as ...
    ... Sofia  Institute of Mineralogy and Crystallography “Acad. Ivan Kostov”, Bulgarian Academy of Sciences, Sofia  National Museum of Natural History, Bulgarian Academy of Sciences, Sofia  Sofia University “St. Kliment Ohridski”, Sofia  University of Mining and Geology “St. Ivan Rilski”, Sofia ...

  • 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 ...
    ... diagram of the novel design concept The outlined system (Figure 3) permits an aerodynamic definition of mine ventilation network based on psychrometric recordings and the use of ResNet software, i.e. the establishment of actual aerodynamic resistance of mine chambers and thus the configuration of the ...
    ... detailed analysis of necessary airflow volumes for the ventilation of individual workplace locations, often with a very complex geometry. The application of CFD software improves the reliability and quality of the apprehension and verification of air amounts needed for the ventilation of workplaces. ...
    ... estimation of gas and dust emission and temperature conditions flow process modelling using CFD Data acquis ition ventilation and psychrometric parameters ventilation and psychrometric parameters Fig. 3. Architecture of the hybrid system INVENTS 3. Software implementation of INVENTS The ...

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

    Franković Maja, Novaković Nevenka, Matović Vesna (2014)

  • 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
    ... is the primary source of energy for many physical and biological processes on Earth and it is one of the basic preconditions for the existence of the living world. In essence, energy received from the Sun is in the form of light and thermal energy. When considering the total impact of the solar ...
    ... year in solar energy and 0.04 Mtoe per year in biodegradable part of waste (Republic of Serbia, 2013). Total primary energy production from RES in Serbia in 2018 was 2.069 Mtoe (Ministry of Mining and Energy, Republic of Serbia, 2018). In the total domestic production of primary energy from renewable ...
    ... m Biogas, Solar, Geothermal energy Figure 1: Total production of primary energy from RES in Serbia per energy source (Republic of Serbia, 2018). 3. Potential of solar energy in Serbia Serbia has an average of 272 sunny days and about 2,300 sunny hours, which is more than the European average ...

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... stemming, tagging, recognition of nominal phrases and named entities and, finally, parsing [10]. Based on document representations by surrogates in large collections of tex- tual documents, a preprocessing of documents usually takes place, in which an index of the collection of documents is formed, to be ...
    ... dissertation metadata and full-text search was developed at the University of Novi Sad. It uses an index based on Lucene that integrates a Porters stemmer for Serbian [9]. Furlan and associates [5] also use Porter’s stemmer and min-max normalization for logarithm of tflog (the log-number of times the given ...
    ... be used for search and retrieval purposes. Relevant documents are retrieved and ranked upon a user query on basis of this index, using an approximate matching model, such as the vector space model, based on weight coefficients of terms, or the probabilistic model, based on relevance feedback [22]. When ...

  • 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

  • Dvodimenzionalna geometrijska morfometrija prvih gornjih molara hominina sa teritorije Srbije - taksonomska i metodološka analiza

    Predrag N. Radović (2022)
    Primarni cilj ove studije tiče se taksonomske identifikacije fosilnih prvih gornjih molara (M1) hominina pronađenih u Srbiji, primenom metoda dvodimenzionalne (2D) geometrijske morfometrije. U prvoj (metodološkoj) fazi istraživanja ispitana je efikasnost 16 različitih pristupa (geometrijskih modela) u klasifikaciji M1 neandertalaca i anatomski modernog čoveka. Modeli su testirani na dva seta okluzalnih projekcija krunica (n = 34 i n = 64) dobijenih orijentisanjem digitalnih 3D modela u virtuelnom okruženju ili fotografisanjem fizičkih primeraka zuba. Prilikom testiranja primenjena je klasifikacija zasnovana ...
    2D geometrijska morfometrija, prvi gornji molar (M1), taksonomska identifikacija, neandertalci, anatomski moderni ljudi, Pešturina, Velika Balanica, Srbija

  • Properties of fly ash and slag from the power plants

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...
    fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method
    ... al indicators caused by fly ash and slag can be eliminated or reduced if they are used as build- ing material for road construction and other trafficked areas. The using of fly ash and slag as secondary materials for road construc- tions, saves huge amounts of standard building materials (stone ...
    ... R., RADIĆ, D., OBRADOVIĆ, M. & STOJANOVIĆ, K. (2015): Reprint of „Petrological and or- ganic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index”.– International Journal of Coal Geo- logy, 157, 165–183. ŽIVOTIĆ, D., STOJANOVIĆ, K., GRŽETIĆ ...
    ... (1973): Methods of analysis of coal and coke – Determination of barium oxide (BaO) in ash from solid fuels. SRPS B.H8.362 (1973): Methods of analysis of coal and coke – Determination of ferric oxide (Fe2O3) in ash from solid fuels. SRPS B.H8.363 (1973): Methods of analysis of coal and coke – Determination ...

  • 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
    ... Sci. 2021, 11, 2691 3 of 24 Figure 1. (a) Main tectonic units of the Alpine Fold Belt and Alpine–Carpathian–Dinaric Mountains (modified after [28]); (b) Geological map of the Vojvodina part of the Pannonian basin basement (modified after [29]). Appl. Sci. 2021, 11, 2691 4 of 24 Figure 2. Proposed ...
    ... site belong to the carbonated type, and this confirmed that the primary geothermal reservoir was formed in the Triassic rocks of the basin bedrock (Figure 9). Appl. Sci. 2021, 11, 2691 13 of 24 Table 5. Physical-chemical features of geothermal waters on the site of Ljuba. T Conductivity pH Na K Ca ...
    ... Applying the method of D’Amore’s genetic parameters, geothermal waters at Banatsko Veliko Selo belong to the clastic water type, and this confirmed that the primary geothermal reservoir was formed within the sands of Pliocene epoch (Figure 10). Table 6. Physical-chemical features of geothermal waters ...

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • Analiza mogućnosti primene tehnologije hvatanja i skladištenja ugljenika (CO2) na objektima Nis-A

    Isidora Veljanoski (2024)
    U ovom radu opisana je primena CCUS tehnologija u kompaniji NIS i na koji način treba da se optimizuje da bi projekat bio rentabilan.U prvom i drugom poglavlju opisani su energetski trendovi i tranzicije, razvojni mehanizmi za regulisanje emisije gasova staklene baste i o ugljen-dioksidu kao hemijskom jedinjenju i šta je to CCUS.U trećem, četvrtom i petom poglavlju je detaljnije opisano izdvajanje, hvatanje, transport i skladištenje ugljen-dioksida.Šesto poglavlje i sedmo poglavlje obuhvataju rešenja za razvoj i realizaciju CCUS projekata ...
    energetski trendovi, ugljen-dioksid, CCUS, izdvajanje, hvatanje, transport i skladištenje CO2, ležište, ekonomija projekta
    ... overview of current status of carbon dioxide capture and storage technologies, URL: An overview of current status of carbon dioxide capture and storage technologies - ScienceDirect (2014) [3] V. Gonzales, A. Krupnick, L. Dunlap, Carbon Capture and Storage 101 „URL: Carbon Capture and Storage 101 ...
    ... Between Carbon Capture and Storage and Carbon Sequestration, URL: https://www.differencebetween.com/difference-between- carbon-capture-and-storage-and-carbon-sequestration/ (2021) [20] J. Bradshaw, S. Bachu, et al., CO-» storage capacity estimation: issues and development of standards, URL: h ...
    ... kapital (zajam) su kamatna stopa 6%, period otplate zajma 15 godina. 49 CO2 captured Efficience of capturing Investment CAPEX capture CAPEX capture CAPEX transport CAPEX compression OPEX capture OPEX transport OPEX compresion General assumptions Discount rate Tax rate Tax ...