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Упит dcterms_subject_txt:Computer Science Applications,Process Chemistry and Technology

2414 items

  • Petrographical and organic geochemical study of the subbituminous coal from the Dubrava field, Aleksinac basin (Serbia)

    Željana Sekulić, Ksenija Stojanović, Achim Bechtel, Reinhard Sachsenhofer, Miomir Petrović, Ivan Kojić, Dragana Životić (2019)
    ... Kojić*, Dragana Životiće* 1: Mining and Metallurgy Institute, Zeleni Bulevar 35, 19210 Bor, Serbia 2; University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade, Serbia 3: Montanuniversitčt Leoben, Department of Applied Geosciences and Geophysics, Peter-Tunner-Str. 5, A-8700 ...
    ... Makedonska 33, 11000 Belgrade, Serbia 5; University of Belgrade, Innovation Center of the Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade, Serbia 6; University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia *: Corresponding Author: dragana.zivoticorrgf.bg.ac.rs ...
    ... parts of the Main coal seam and coal layers within and under lower oil shale package. Since vitrinite reflectance (%Rr, 0.44 + 0.03 - 0.46 + 0.02) and biomarker compositions indicate the same maturity stage of organic matter (OM), corresponding to late diagenesis and early catagenesis, petrographic ...

  • Анализа примене утискивања полимера за повећање искоришћења лежишта „Х“

    Јана Ивановић (2024)
    Лежиште „Х“ се налази у Панонском басену и део је нафтно-гасног поља „ХХ“.С обзиром на висок удео воде у произведеном флуиду на лежишту је потребно применити неку методу којом би се смањила брзина напредовања фронта воде ка производним бушотинама, односно смањио удео воде у производњи. Овај рад има за циљ да детаљно испита могућност примене једне од допунских метода повећања искоришћења лежишта, методе утискивања полимера на изабраном лежишту „Х“. Први део рада приказује основне теоријске појмове на којима се ...
    методе повећања искоришћења, хемијске методе, инјектирање полимера, нумеричка симулација
    ... in South Oman - Initial Results and Future Plans”, 2012. [4] Cai Shuwet, He Xianru, Liu Kun, „Macromolecular interactions and synergy in xanthan/HPAM aqueous solution”, Royal Society of Chemistry, 2017. [5] Chang Hong Gao, „Scienfific research and field applications of polymer Jlooding in heavy ...
    ... Technique”, Oil & Gas Research, 2017. [16] Kasimbazi Gloria, „Polymer Flooding”, master thiesis, Norwegian university of science and technology, Department of Petroleum Engineering and applied geophysics, 2014. [17] Ming Han, Hianmin Zhou, Fuseni B. Alhasan, Badr Zahrani, Abdulkareem M. AlSofi, „ ...
    ... ory and Practice”, Elsevier, 2011. 53 [23] Sheng J. James, „A Comprehensive Review of Alkaline-Surfactant-Polymer (ASP) Flooding”, Article in Asia-Pacific Journal of Chemical Engineering, 2013. [24] Sheng, J. James, Leonhardt, B., and Azri, N., „Status of Polymer-Flooding Technology“, 2015 ...

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... International Conference on Computer Applications for Water Supply and Distribution,  Leicester Polytechnic, UK, September 8‐10. (на енглеском)  279. Todini, E., Pilati, S. 1988. A gradient method for the analysis of pipe networks. in: B.  Coulbeck, C.H. Orr (Eds), Computer applications in water supply, Jo ...
    ...  Al‐Dabass, D. 2004. Modelling and simulation of water  systems based on loop equations. International journal of simulation: Systems, science &  technology 5(1‐2), 61–72. (на енглеском)  9. Allen, J.J., Shockling, M.A., Kunkel, G.J., Smits, A.J. 2007. Turbulent flow in smooth and  rough pipes. Philosophi ...
    ... 58. Brkić, D. 2009i. Gas distribution network hydraulic problem from practice, Petroleum  Science and Technology /in press/ (на енглеском)  59. Brkić, D. 2009. Serbian gas sector in the spotlight of oil and gas agreement with Russia.  Energy Policy 37 (5) 1925‐1938. (на енглеском)  60. Бркић, Д., ...

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... International Conference on Computer Applications for Water Supply and Distribution,  Leicester Polytechnic, UK, September 8‐10. (на енглеском)  279. Todini, E., Pilati, S. 1988. A gradient method for the analysis of pipe networks. in: B.  Coulbeck, C.H. Orr (Eds), Computer applications in water supply, Jo ...
    ...  Al‐Dabass, D. 2004. Modelling and simulation of water  systems based on loop equations. International journal of simulation: Systems, science &  technology 5(1‐2), 61–72. (на енглеском)  9. Allen, J.J., Shockling, M.A., Kunkel, G.J., Smits, A.J. 2007. Turbulent flow in smooth and  rough pipes. Philosophi ...
    ... 58. Brkić, D. 2009i. Gas distribution network hydraulic problem from practice, Petroleum  Science and Technology /in press/ (на енглеском)  59. Brkić, D. 2009. Serbian gas sector in the spotlight of oil and gas agreement with Russia.  Energy Policy 37 (5) 1925‐1938. (на енглеском)  60. Бркић, Д., ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... Britain, Quaternary Journal of Engineering Geology and Hydrogeology 39, 5-50. 45. Dulinska, J.M., Fabijanska, M. 2011. Large-dimensional shells under mining tremors from various mining regions in Poland. World Academy of Science, Engineering and Technology 59, 1443-1450 46. Eckmann, J.P., Oliffson Kamphorst ...
    ... T., Samaey, G. 2001. Technical Report TW-330, Department of Computer Science, K.U. Leuven, Leuven, Belgium. 49. Engelder, J.T., Logan, J.M., Handin, J. 1975. The sliding characteristics of sandstone on quartz fault-gouge, Pure and Applied Geophysics 113, 69-86. 193   50. Erickson, B., Birnir ...
    ... 37, 341 p. 35. Daihua, Z., Miller, H.D.S., Kaiser, P. K. 1989. Numerical study of violent rock failure by stick-slip on joints, Mining Science and Technology, 9, 241–251. 36. Davies, N., Kijko, A. 2003. Seismic risk assessment: with an application to the South African Insurance Industry, South ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... Britain, Quaternary Journal of Engineering Geology and Hydrogeology 39, 5-50. 45. Dulinska, J.M., Fabijanska, M. 2011. Large-dimensional shells under mining tremors from various mining regions in Poland. World Academy of Science, Engineering and Technology 59, 1443-1450 46. Eckmann, J.P., Oliffson Kamphorst ...
    ... T., Samaey, G. 2001. Technical Report TW-330, Department of Computer Science, K.U. Leuven, Leuven, Belgium. 49. Engelder, J.T., Logan, J.M., Handin, J. 1975. The sliding characteristics of sandstone on quartz fault-gouge, Pure and Applied Geophysics 113, 69-86. 193   50. Erickson, B., Birnir ...
    ... 37, 341 p. 35. Daihua, Z., Miller, H.D.S., Kaiser, P. K. 1989. Numerical study of violent rock failure by stick-slip on joints, Mining Science and Technology, 9, 241–251. 36. Davies, N., Kijko, A. 2003. Seismic risk assessment: with an application to the South African Insurance Industry, South ...

  • Quantitative landslide risk assessment in the city of Tuzla

    Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović (2021)
    In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...
    "landslides", "risk assessment"
    ... collecting causative-conditioning factors as proxies for landsliding process propagation, including geological, geomorphologic and environmental factors, as well as synthetic GIS-based derivatives; splitting the area into training and testing/validating parts; training the Machine Learning algorithm ...
    ... implemented by HEIS Sarajevo, URBIS Banja Luka and IBIS Engineering, Banja Luka. We are very grateful to Mrs. Aida Hadžič Hurem for her great support. This research results are part of the Project TR36009 funded by the Ministry of Education, Science and Technological Development of the Republic of ...
    ... to be prepared cautiously, using as realistic estimations on population distribution as possible. Eventually, overlapping spatial and temporal dimension of the process, as well as detailed element at risk inventory, resulted in a very detailed, very realistic landslide risk map. The map depicts ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS

  • Ograničenja primene optimizacionih algoritama u slučaju kopova

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Petar Marković, Dejan Ranković (2020)
    Proces optimizacije površinskih kopova, kao sastavni deo strateškog planiranja, veoma je važan sa stanovišta ostvarivanja maksimalnih efekata proizvodnje. To je složen zadatak koji vrlo često podleže vrlo strogim geometrijskim i drugim praktičnim rudarskim ograničenjima. Ova ograničenja u posebno su izražena na površinskim kopovima uglja, te u značajnoj meri mogu povećati stepen neizvesnosti rudarskog projekta, odnosno izazvati neželjena dejstva u pogledu profitabilnosti poslovanja. Iz tog razloga, veoma je važna primena savremenih optimizacionih alata, koji u značajnoj meri mogu olakšati celokupan ...
    ... mines, and can significantly increase the degree of uncertainty of the mining project, or cause side effects in terms of business profitability. For this reason, it is very important to apply modern optimization tools, which can significantly facilitate the entire optimization process, and also reduce ...
    ... Plants Through Mine Coal Quality Planning and Control. Thermal Science, 22(1B), pp.721-733, 2017 Benndorf J.: Investigating the variability of key coal quality parameters in continuous mining operations when using stockpiles. Advances in Orebody Modelling and Strategic Mine Planning I. AusiMM, 2011 ...
    ... st Abstract The process of open pit mine optimization, as an integral part of strategic planning, is very important from the point of view of achieving maximum economic efficiency of production. It is a complex task that is very often subject to very strict geometric and other practical mining ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... nt of Lignite Open cast Technology in Order to Increase Energy Efficiency and Occupational Safety” (TR 33039), “Developed new methods for diagnosis and examination mechanical structures” (TR 35040) and a part of the project “Research on possibility for AT (Advanced Technology) rockbolting application ...
    ... work safety and production efficiency” (TR 33025), financed by the Ministry of Education and Science of the Republic of Serbia within the framework of Programme of research in the field of technological development for the period 2011-2019. REFERENCES 1. Optimizing organization, resources and costs of ...
    ... selection, including savings and improvements, can be achieved by these activities: In-time replacement of auxiliary machines and vehicles; Usage of proven and quality machines with implemented unification as much as possible; Improvement of maintenance system; Implement modern and improved technologies ...

  • 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
    ... „zonservative · best estimates and utilization of NREL's Annual Technology Baseline (ATB) tool and PVWatts Calculator (US EPA, 2019). Based on these resources, NREL recommends these factors (US EPA, 2019): r = 15% solar panel efficiency of PV module, and PR = 86% performance ratio. [1 ...
    ... There are several models - available to be used by the public - for creating: the solar maps. These models are usually connected with computer software applications, with most of them using ESRIs ArcGIS as their base system (Sarmiento N. et al.. 2019). ESRI's ArcGIS can provide the appropriate ...
    ... October 2019, Athens - Greece field of environmental terrestrial applications (Copernicus land Monitoring Service, 2019b). Data from CORINE Land Cover (CLC) is generated by the processing of high-resolution satellite images and they provide information about land cover changes in the major part ...

  • Cu(II) effect on sphalerite floatability and zeta potential

    Vučinić Dušica, Deušić Slaven, Tomašević Aleksandra (2012)

  • Kinetics and the mechanism of the supstitution reactions of some Pt(II) and Pd(II) complexes

    Bogojeski Jovana, Mijatović Aleksandar, Đurović Mirjana, Petrović Biljana, Bugarčić D. Živadin (2011)

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... Standardization EN 14157:2008). To evaluate the physical and mechanical properties of the investigated carbonate rocks, basic descriptive statistics were performed using the StatSoft computer software. Statistical parameters (mean, minimum, and maximum value) are presented using box-Whisker diagrams ...
    ... Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Djusina 7, Belgrade, Serbia e-mail: vesna.matovic('rgf.bg.ac.rs T. V. Ćalić Department of Architectural Technology, Faculty of Architecture, University of Belgrade, Bulevar ...
    ... petrological and physico- mechanical properties of Serbia's Mesozoic carbonate rocks, among those of which are rocks applicable as dimension stone. Essentially, this paper offers a substan- tiated overview of this material's recommended scope of use, proposing proper applications of natural stone ...

  • High-resolution sequence stratigraphy of carbonates - theory and examples

    Jelena Stefanović, Dejan Radivojević (2020)
    Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...
    изданак, системска група, јура-креда, карбонатна платформа, плитководна средина
    ... W. and ALLEN, G.P., 1999. Siliciclastic sequence stratigraphy: concepts and applications. Concepts in sedimentology and Paleontology, vol. 7. Society of Economic Paleontologists and Mineralogists (SEPM). 210. READ, J.F. 1995. Overview of carbonate platform sequences, cycle stratigraphy and reservoirs ...
    ... sequences and systems tracts - responses of carbonate platforms to relative sealevel changes, in LOUCKS, R.G. and SARG, J.F., eds., Carbonate sequence stratigraphy – recent developments and applications: American Association of Petroleum Geologists Memoir 57, p.3-41. HUNT, D. and TUCKER, M.E ...
    ... SUMMARY From the 70s and the development from the seismic stratigraphy - sequence stratigraphy has become powerful tool in modern scientific research. Science has encouraged the development of the method and biggest advances can be seen in resolution improvement and application of the original ...

  • Two new zincophosphates, (H3NCH2CH2NH3)2[Zn(m-PO4)2] and (NH4)[(H3N)Zn{(m-PO4)Zn}3]: Crystal structures and relationships to similar open framework zinco - and aluminophospates

    Karanović Ljiljana, Poleti Dejan, Đorđević Tamara, Šutović Sabina (2011)

  • An investigation of polyhedral deformation in two mixed-metal diarsenates: SrZnAs2O7 and BaCuAs2O7

    Kovač Sabina, Karanović Ljiljana, Đorđević Tamara (2015)

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... examples from corpora, and the presented approach supports the selection of dictionary examples making the process of dictionary development faster and more productive. 1.2 The role of dictionary examples Dictionary examples play an important role in dictionary entries and they constitute, according ...
    ... different dictionaries of Serbian and the forthcoming volumes of the SASA dictionary. Section 2 describes some steps towards modernization of the dictionary-making process and the development of the digital version of SASA dictionary, starting with retro- digitization process, followed by several ideas ...
    ... names and their values. The list of requested features can also be customized. The system is envisaged to process both the sentences from corpora and dictionary examples extracted from the lexical database. In the text that follows, the term sentence will refer to both dictionary examples and sentences ...

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