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Упит dcterms_subject_txt:road design

307 items

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... L and N.J., and Ministry of Education, Science and Technologic Development of Serbia, project number 172051. The funders had no role in study design, data RESEARCH ARTICLE Surface functional groups and degree of carbonization of selected chars from different processes and feedstock Marija ...
    ... appropriate baseline correction as described in the Results. Spectral induced polarization. SIP measurements were made using the equipment and design considerations presented by Zimmermann et al. [71]. They were performed in an air- conditioned room at 20.5 + 1 "C. Conductivity values were corrected ...

  • 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 ...
    ... of general geology, exploration of mineral deposits, hydrogeology and engineering geology, as a modern and efficient information basis for planning, design and decision- making in the geological domain. A u t h o r P r o o f 4 R. Stanković et al. Within the GeolISS project a web portal1 was ...

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia
    ... Mammals above the Species Level. Columbia University Press, New York. Milanović, S. 2015. Speleology and cave diving as a base for tapping structure design, p. 470- 489. In Stevanović, Z. (ed.), Karst Aquifers - Characterization and Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-12850-4 ...

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... disadvantages in relation to the reliability of data sources, questionable correlation with landslide development (for example the use of distance to road or distance to drainage fac- tors), subjectivity of the engineering-geological classification methods (rock mass classification), precision of measuring ...
    ... slide susceptibility mapping using certainty factor, index of entropy and logistic regression models in GIS and their comparison at Mugling–Narayanghat road sec- tion in Nepal Himalaya.– Natural Hazards, 65/1, 135–165. doi: 10.1007/s11069- 012-0347-6 DRAGICEVIĆ, S., CAREVIĆ, I., KOSTADINOV, S., NOVKOVIĆ ...
    ... eo lo g ia C ro a ti ca Geologia Croatica 72/192 RAMESH, V. & ANBAZHAGAN, S. (2015): Landslide susceptibility mapping along Kolli hills Ghat road section (India) using frequency ratio, relative effect and fuzzy logic models.– Environmental Earth Sciences, 73/12, 8009–8021. doi: 10.1007/ s126 ...

  • Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

    Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)
    Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...
    Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, Pyrophyllite

  • 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

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji

    Ljiljana R. Kolonja (2016-09-23)
    Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...
    rudarstvo, bezbednost i zdravlje na radu, poslovna inteligencija,tehnička zaštita, ontologije
    ... cfm. 128 NOY, N. F. & HAFNER, C. D. 1997a. The state of the art in ontology design: A survey and comparative review. AI magazine, 18, 53. NOY, N. F. & HAFNER, C. D. 1997b. The state of the art in ontology design: A survey and comparative review. AI magazine, 18, 53. NRM 2004. Queensland Mines and ...
    ... process: an introduction, Addison‐Wesley Professional. LARMAN, C. 2005. Applying UML and patterns: an introduction to object‐oriented analysis and design and iterative development, Pearson Education India. LEI, T. & DING, R.‐J. 2008. Efficiency assessment of coal mine safety input by data envelopment ...

  • Primena ubrzane konsolidacije kod izgradnje nasipa na deonici priključka Novi Beograd – Surčin autoputa ,,Miloš Veliki"

    Aleksa Tomičić (2024)
    Problem koji se javlja prilikom izgradnje objekata na ne konsolidovanom stišljivom tlu jeste pre svega vezan za prevelika sleganja tla usled opterećenja od objekata, najčešće su to objekti putne infrastrukture (nasipi), ili stambeno poslovni objekti. U tu svrhu se,primenjuju različiti vidovi ubrzanja konsolidacije tla. Stoga za potrebe izrade završnog rada Master akademskih studija studijskog programa geotehnika, na Rudarsko-geološkom fakultetu, izvršena je analiza dva najčešće korišćena postupka ubrzanja konsolidacije: predopterećenjem i ugradnjom peščanih drenova. Glavni cilj ovih postupaka je ...
    stišljivo tlo, konsolidacija, ubrzanje konsolidacije, predopterećenje, peščani drenovi

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. For this purpose ...
    ... if we add disruptions then it is obvious that the gate road support is exposed to the rock stress much longer than is the case with the application of modern mechanized methods. In such a production environment, the maintenance of the gate road stability is almost impossible and is per- formed in an ...
    ... a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. For this purpose ...

  • Definisanje geotehničkih karakteristika terena za potrebe izgradnje stanice za snabdevanje gorivom “OMV” u Trsteniku

    Milica Dutina (2024)
    U ovom Završnom radu prikazana su istraživanja na osnovu kojih su urađeni grafički dio, proračun nosivosti i proračun analize slijeganja terena za potrebe izgradnje benzinske stanice sa pratećim objektima. Detaljno je analiziran prodajni objekat,čelični rezervoar za gorivo i znak. Za proračun graničnog opterećenja korišćena je metoda Mayerhofa, dok je analiza slijeganja urađena Konsolidacionom metodom slijeganja za prodajni objekat i čelični rezervoar za gorivo, a za temelj znaka po principu slijeganja i rotacije krutih temelja - Gorbun Posadov. Sve dobijene ...
    terenska istraživanja, laboratorijska ispitivanja, geotehnička istraživanja, geotehnički model terena, osnovne tehničke karakteristike, analiza slijeganja, proračn nosivosti
    ... parametara čvrstoće i deformabilnosti dobijaju se na osnovu poznatih korelacija iz CPT opita (Manual on Estimating Soil Properties Jor Foundation Design, Schmertmann 1975; Villet-Mitchell 1981, Robertson&Campanella 1983; Kishida 21 1967; Meye rhof 1956, 1976; Peck, Hanson&Thornburn 1974). Ovdje ...

  • Управљање радом центрифугалних компресора

    Младен Благојевић (2024)
    Овај мастер рад се бави анализом и управљањем рада центрифугалних компресора у индустријским постројењима, са посебним освртом на управљачке системе који осигуравају њихов ефикасан рад. Рад обухвата разматрање различитих система за регулацију протока, притиска и примену савремених метода регулације као што су повратна и напредна. Такође, анализиране су динамичке промене у раду компресора, утицај поремећајних величина и могућности оптимизације. Резултати су показали да правилна примена управљачких система не само да спречава пумпање, већ и повећава стабилност и продуктивност целокупног ...
    центрифугални компресори, управљање компресорима, проток притисак, повратна регулација, напредна регулација, оптимизација
    ... e-vanes-do-compressors-saeed-hadi 33 pacnonarab»y norojmaH aJtar. CrnHka 18. npakayyje rpaMep paana IGV-oBa tnoji pa3jtHuHTHM yTJIOBHM4a. Design point Throttle range Capacity cnuka 18. KpaBe Kapakrepucruke IGV? 4.2.3. Ocrajte MerojJte yripaBjbamba IIlocroje H pyre MeTOHeČ KOHTPpOMC ...

  • Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike

    Мирослав Црногорац, Душан Даниловић, Лола Томић (2020)
    ... researches involving employee engagement are mainly focused on larger business systems. The objective of this research is to define a multiphase road map that would facilitate the improvement of employee engagement in micro-enterprises and the research method used is a case study. Research results ...
    ... of-incoming-quality-control-of-pcb-components (posećeno maja 2020.) [7] Jablons, J., Quality Control in the Manufacture of Metal Parts - Achieving Design Specifications And End Functionality, https://metalcutting.com/knowledge-center/quality-control-in-the- manufacture-of-metal-parts/ (posećeno maja ...
    ... load capacity as well as constraints. Optimization is conducted within Topology Study module with mass reduction of 39.8[%], compared to the initial design. In addition, future directions of research are given, as well as potential opportunities for additional reduction while the optimal solution is ...

  • Uticaj utiskivanja gas-lift gasa na prenos mase i toplote

    Branko Grubač (2019)
    Nakon uvođenja kontinualnog gas-lifta, primećen je porast proizvodnje tečnog naftnog gasa, TNG, u postrojenju za preradu gasa, kao jednog od finalnih proizvoda dobijenog iz fluida gaso kondenzatnih i rastvorenog gasa iz naftnih bušotina. Pretpostavljeno je da se prisustvom gas-lift gasa uspostavlja drugačija ravnoteža faza u odnosu na slučaj bez gaslifta, te da je gas-lift gas stripovao propan i butane iz tečne u parnu fazu, što je dovelo do povećanja prinosa TNG-a. Napravljen je model bušotine koja radi u kontinualnom gas-liftu ...
    gas-lift, modelovanje bušotine, prenos mase i toplote, taloženje parafina
    ... Second Edition, Gulf professional publishing, Elsevier, Burlington, str 331-352, (2008) [7] A. Hernandez, Fundamentals of gas-lift engineering, Well design and troubleshooting, Elsevier, Cambridge, str 81-106, (2016) [8] S. Ayatollahi, M. Narimani, M. Moshfeghian, Intermittent gas-lift in Aghajari ...
    ... str 22-36, (2005) [47] A. Zamani, P. Pourafshari, F. Rabiee, Developing a novel temperature model in gas-lifted wells to enhance the gas-lift design, Vol. 2, str 81-85, (2014) [48] F. Farshad, J. Gerber, J. Lorde, Predicting temperature profiles in producing oil wells using aftificial neural ...
    ... Petroleum Technology, str 1003-1008, (1983) [69] B. Shannak, Frictional pressure drop of gas liguid two-phase flow in pipes, Nuclear Engineering and Design, Vol. 238, str 3277-3284, (2008) [70] T. Russell, A. Etchells, R. Jensen, R. Arruda, Pressure drop and holdup in stratified gas-liquid flow, AiChE ...

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... hull. J. Hazard. Mater. 2005, 121, 247–250. [CrossRef] [PubMed] 71. Vadivelan, V.; Vasanth Kumar, K. Equilibrium, kinetics, mechanism, and process design for the sorption of methylene blue onto rice husk. J. Colloid Interface Sci. 2005, 286, 90–100. [CrossRef] [PubMed] 72. Ferrero, F. Dye removal by ...

  • Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia

    Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski (2024)
    General Earth and Planetary Sciences
    ... This research project represents a collective effort in which each author played a crucial role in shaping its concep- tion, methodology, and design. The initial idea was ignited by Dragana Đurić and Uroš Đurić, who laid the foundation for the study by devel- oping the very first models and ...

  • Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike

    Milanka N. Negovanović (2015-06-30)
    Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...
    model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina
    ... Association, Washington, D.C., 1976. 66. Newmark, N.M., Hall, W.J., Earthquake Spectra and Design, Earthquake Engineering Research Institute, Berkeley, CA, 1982. 67. Veletsos, A.S., Newmark, N.M., Design Procedures for Shock Isolation Systems of Underground Protective Structures, Volume III; Response ...
    ... Farmer, I.W., Attewell, P.B., Ground vibrations from shallow sub-surface blasts, The Engineer 217, 1964, 553-559. 9. Holmberg, R., Persson, P.A., Design of tunnel perimeter blasthole patterns to prevent rock damage, Proc. Tunnelling '79, 1979. 10. Shoop, S.A., Daemen J.J.K, Site-specific predictions ...
    ... (based on wave propagation laws), Proc. 24th U.S. Symp. on Rock Mechanics, Texas, USA, 1983, 151-161. 14. Indian Standard, Criteria for safety and design of structures subjected to under ground blast, ISI, IS - 6922, 1973. Univerzitet u Beogradu, Rudarsko - geološki fakultet Milanka Negovanović ...

  • Model predviđanja potresa od miniranja na površinskim kopovima primenom simulacione metode Monte Karlo i fazi logike

    Milanka N. Negovanović (2015-06-30)
    Modeliranje predviđanja potresa tla od miniranja primenom fazi logike i metode MonteKarlo zasnovano je na podacima dobijenim terenskim merenjima potresa uzrokovanihminiranjem. Promenljive modela definisane su analizom parametara bušenja i miniranjaminskih serija, kao i velosigrama izmerenih potresa od miniranja. Iskorišćene suprednosti fazi logike u implementaciji mnogo većeg broja ulaznih i izlaznih veličina zamodeliranje u odnosu na postojeće empirijske modele. Na osnovu identičnih podataka,dobijen je regresioni model predviđanja potresa, da bi se izvršilo testiranje novogmodela. U cilju povećanja pouzdanosti modela predviđanja, ...
    model, predviđanje potresa, miniranje, površinski kop, Monte Karlo, fazilogika, regresiona analiza, FFT analiza, spektri odziva, pomeraj pukotina
    ... Association, Washington, D.C., 1976. 66. Newmark, N.M., Hall, W.J., Earthquake Spectra and Design, Earthquake Engineering Research Institute, Berkeley, CA, 1982. 67. Veletsos, A.S., Newmark, N.M., Design Procedures for Shock Isolation Systems of Underground Protective Structures, Volume III; Response ...
    ... Farmer, I.W., Attewell, P.B., Ground vibrations from shallow sub-surface blasts, The Engineer 217, 1964, 553-559. 9. Holmberg, R., Persson, P.A., Design of tunnel perimeter blasthole patterns to prevent rock damage, Proc. Tunnelling '79, 1979. 10. Shoop, S.A., Daemen J.J.K, Site-specific predictions ...
    ... (based on wave propagation laws), Proc. 24th U.S. Symp. on Rock Mechanics, Texas, USA, 1983, 151-161. 14. Indian Standard, Criteria for safety and design of structures subjected to under ground blast, ISI, IS - 6922, 1973. Univerzitet u Beogradu, Rudarsko - geološki fakultet Milanka Negovanović ...

  • Дефинисање геотехничких параметара еолских седимената земуснког платоа на основу лабораторијских и теренских SPT испитивања

    Ђорђе Крзман (2024)
    Циљ овог рада је био да се одреде геотехничке караткеристике предметног терена што представља полазну основу за рационално пројектовање и градњу. Истражним бушењем утврђено је да предметни терен изграђују четри лесна хоризонта и три слоја погребене земље до дубине од 22-23 m. Лабораторијским испитивањем добијени су ефективни параметри смичуће чврстоће, где се кохезија најчешће креће између c’=14 и 18 kPa, а угао унутрашњег трења f'= 25 - 30 °. Теренска SPT испитивањем уз коришћење прихваћених корелација у геотехничкој пракси ...
    лес, лабораторија, SPT, корелације, параметри
    ... researchgate.net/profile/Md-Manzur- Rahman/publication/318110370 Foundation Design using Standard Penetrati on_Test_SPT_N-value 9. E. H. Kulhawy, P. W. Mayne: „, Manual on Estimating Soil Proporties for Foundation Design “ – Cornell University, Ithaca, New York, 1990. 47 IPAOHUKA JIOKVMEHTATIHJA ...

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary