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Упит dcterms_subject_txt:Geotechnical investigation

231 items

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... steps in petroleum exploration is to determine possible source rocks, their thermal maturity and burial history, the present study focused on the investigation of organic matter type and thermal maturity of outcropping sedimentary rocks that are possible source rocks in the re- gional petroleum system ...
    ... steps in petroleum exploration is to determine possible source rocks, their thermal maturity and burial history, the present study focused on the investigation of organic matter type and thermal maturity of outcropping sedimentary rocks that are possible source rocks in the re- gional petroleum system. ...
    ... samples, the PI was not a suitable maturity indicator for the outcropping sedimentary rocks analysed in this study. An organic petrographic investigation including vitrinite re�ectance was done with a Zeiss Axio Imager 2 microscope with an oil immersion objective 50x in incident non-polar- ized ...

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... that which is desirable in an archaeological survey. Therefore, it is better to use a total station to read the geographic coordinates of the investigation polygon where the magnetic measurements are acquired, rather than GPS which assigns uniformly-arranged coordinates along the x and y axes of ...
    ... the measured points, be- fore and after the completion of the measurements with GPS, the geographic coordinates of the cor- ner points of the investigation polygons were re- corded. Taking the average value of the measured coordinates, the data is distributed regularly along the x or the y axis, ...

  • Flotability of chalcopyrite from the Rudnik deposit

    Đurica Nikšić, Predrag Lazić, Milena Kostović (2021)
    Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...
    Директно селективно флотирање, халкопирит, KAX, NaCN

  • Linear-motor plunger pump increases lifting efficiency

    Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev (2022)
    plunger, linear, motor, pumps

  • Značaj izvodjenja Proktorovog opita na komunalnom otpadu

    Jovana Janković, Dragoslav Rakić, Tina Đurić, Irena Basarić Ikodinović, Laslo Čaki (2019)
    Komunalni otpad predstavlja jedan od ključnih problema današnjice. U Srbiji je najčešći vid odlaganja otpada na komunalne deponije i zbog toga je bitno ispravno i sigurno ga skladištiti. Zbijanje komunalnog otpada predstavlja jednu od osnovnih komponenti procesa odlaganja. Kako bi se što bolje predvidelo ponašanje komunalnog otpada neophodno je pre zbijanja na terenu laboratorijski odrediti maksimalnu suvu zapreminsku težinu i optimalnu vlažnost. U dosadašnjoj praksi u svetu za to se koristi standardizovan Proktorov opit. U radu će biti prikazani ...
    komunalni otpad, zbijanje, deponija, Proktorov opit
    ... different compositions, Waste Management & Research 12. 2013. Rudarsko- geološki fakultet Univerziteta u Beogradu. 2013. Wong, W.W. : Investigation of the geotechnical propertiesof municipal solid waste as a function of placement conditions. MSc. thesis, California Polytechnic State Univ. San Luis Obispo ...
    ... 19 5 authors, including: Some of the authors of this publication are also working on these related projects: Contribution to municipal waste geotechnical classification View project WBIF (Western Balkans Investment Framework), EWBJF: WB13-SER-TRA-01, View project Jovana Janković University of Belgrade ...
    ... NDcyODM0Mzc1NjhAMTU4Njk3NDA4MjE4Mg%3D%3D&el=1_x_3&_esc=publicationCoverPdf https://www.researchgate.net/project/Contribution-to-municipal-waste-geotechnical-classification?enrichId=rgreq-78bf53eab1d6b47e8a972adda0488f0f-XXX&enrichSource=Y292ZXJQYWdlOzM0MDY2MDMwMTtBUzo4ODA2NDcyODM0Mzc1NjhAMTU4Njk3NDA ...

  • Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik

    Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić (2022)
    Tunel „Debelo brdo“ nazvan je po najizraženijem relјefnom obliku na ovoj drugoj deonici autoputa E-80 Niš – Pločnik. Osnovnu geološku građu na lokaciji tunela čini Mio-Plioceni kompleks heterogenog litološkog sastava. Izgradnja tunela je predviđena delom u otvorenom iskopu dužine 240 m, a delom sa podzemnim iskopom dužine 190 m. U zoni tunela, padina je okarakterisana kao uslovno stabilna, pa bi neadekvatna zasecanja mogla da izazovu klizanja terena. Iz tih razloga, u okviru rada posebno su prikazani geotehnički uslovi izgradnje ...
    Tunel „Debelo brdo“, Geotehnički parametri, Privremene kosine, Šipovi, Podgrada.
    ... putevima, Beograd, str. 12-23. [6] ; ; J (2019). Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia Proceedings of the XVII European Conference of Soil Mechanics and Geotechnical Engineering ECSMGE-2019, Geotechnical Engineering foundation of the future, Reykjavik ...
    ... of the terrain. For these reasons, the paper presents separately the geotechnical conditions for the construction of the tunnel in open excavation (temporary excavation securing by installing piles is provided), and the geotechnical conditions for tunnel excavation with a partially modified model in ...
    ... prikazani izgradnje tunela u otvorenom iskopu ( je projektno : Tunel Debelo brdo G parametri, Privremene kosine, ipovi, Podgrada. GEOTECHNICAL CONDITIONS FOR THE CONSTRUCTION OF ON THE HIGHWAY E- - 1, 2 Ikodinovi 3, 4 1 University of Belgrade Faculty of Mining and Geology, Djusin ...

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... iments except for one locality –  Mali Krivelj. This is a most interesting case for the following reason. From this site recent mineralogical  investigation  showed  that  beside  the magnetite  the  andesite  also  contains  homogeneous  grains  of  hemoilmenite which corresponds to the intermediat ...

  • Konstitutivne zavisnosti komunalnog otpada sa deponija u Srbiji

    Dragoslav Rakić (2013-05-10)
    U disertaciji su prikazani rezultati laboratorijskih ispitivanja uzoraka komunalnogotpada dobijeni u aparatima za direktno smicanje i edometarskim aparatima (jedanedometarski aparat konstruisan je za potrebe ove disertacije). Sva ispitivanja su izvršenana veštački pripremljenim uzorcima, uz uvažavanje preporuka koje se odnose nadimenzije korišćenih aparata i veličinu najvećih frakcija u uzorku (EN 1997-2, ASTM2007-a, 2007-b). Za formiranje uzoraka korišćen je komunalni otpad različite starosti,uzet sa dve deponije u Srbiji (Ade Huje u Beogradu i gradske deponije u Novom Sadu).Interpretacija rezultata dobijenih iz ...
    komunalni otpad, deponija, geotehnička klasifikacija, čvrstoća smicanja,deformabilnost, indeks primarne kompresije, indeks sekundarne kompresije, modelisleganja
    ... Founta, P. & Zisimatou, E. (2008). Municipal solid waste as a reinforced soil: Investigation using synthetic waste, Proc., Geo-Institute Geocongress 2008, The Challenge of Sustainability in the Geoenvironment, Geotechnical Special Publication, ASCE, No. 177, 168-175. Atkinson, J.H. (1993). A note ...
    ... of Waste Fills - Theory and Practice, ASTM STP 1070, 358- 370. Coumoulos, D.G., Koryalos, T.P., Metaxas, I.L., & Gioka, D.A. (1995). Geotechnical Investigation at the Main Landfill of Athens, Proceedings of the 5th International Landfill Symposium, Sardinia ’95, S. Margherita di Pula, CISA, Italy ...
    ... Syllwasschy, O. & Kockel, R. (1995). Investigation of waste body behaviour and waste structure interaction, Proceedings of the 5th International Landfill Symposium, Sardinia ’95, S. Margherita di Pula, CISA, Italy, 731-743. Jessberger, H. L. (2001). Geotechnical parameters of municipal solid waste ...

  • Frequency and Length of Syllables in Serbian

    Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)
    Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.
    frekvencije slogova, dužina slogova, srpski jezik
    ... general approach to all languages under investigation is indispensable. If a language allows only open syllables (such as Old Slavonic, cf. Rottmann, 1999), the syllabification is straightforward (provided that diphthongs – if the language under investigation contains any – can be reliably distinguished ...

  • Određivanje zbijenosti starog komunalnog otpada

    Jovana Janković, Dragoslav Rakić, Irena Basarić Ikodinović, Tina Đurić (2021)
    Bez obzira na savremene tretmane komunalnog otpada u svetu, u Srbiji je i dalje najčešći vid odlaganja na komunalne deponije, pa zbijanje otpada predstavlja jednu od ključnih faza formiranja deponije. Na ovaj način znatno se smanjuje zapremina otpada, ubrzava proces degradacije i produžava radni vek deponije. Zbog toga su geotehničke karakteristike komunalnog otpada prilikom zbijanja, veoma bitne kako u fazi projektovanja tako i u fazi izgradnje deponije i optimizacije prostora. Tu se pre svega misli na maksimalnu suvu zapreminsku ...
    komunalni otpad, deponija, Proktorov opit, optimalna vlažnost, maksimalna suva zapreminska težina

  • Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics

    Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar (2019)
    keramika, glina, Dobrodo, mineralogija, sirovina, Srbija

  • 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
    ... its implementation on scales equivalent to well data or outcrops. Carbonates proved to be the most convenient of all sediments for this type of investigation because of their sensitivity to eustatic changes. The basics of carbonate sequence stratigraphy are introduced in second part of the paper. ...

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... continued until present day [9]. Several different structural arrangements have been sug;gested, influenced by the method and accuracy applied in the investigation and by its similarity to marcasite (orthorhombic FeS>, Pnnm) and rutile (tetragonal TiO>», P4, /mnm) prototype structures. The current consensus ...
    ... (Andreja Šestan); software, A.Š. (Aleš Šoster); validation, LJ., A.P., A.K. and J.Z.; formal analysis, LJ., A.K., AŠ. (Andreja Šestan) and J.Z.; investigation, LJ.; resources, A.P.; data curation, LjJ. and J.Z.; writingz— original draft preparation, 1.J., A.P., A.K., AŠ. (Andreja Šestan), and A.Š. (Aleš ...

  • 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
    ... visually satisfactory prediction maps. Regarding the most informative features, the results revealed intriguing pat- terns that require further investigation to fully compre- hend the geological and geophysical implications. Feature importance is a valuable piece of information that neces- sitates ...
    ... various grid search techniques, it will require greater computational time. The FP prediction map holds great significance as it ena- bles an investigation into potential ophiolite sites that were not identified through surface mapping methodologies or are situated beneath the surface. In the context ...
    ... https://doi.org/ 10.33003/fjs-202 1-0503-729 Al-Rawashdeh S, Saleh B, Hamzah M (2006) The use of Remote Sensing Technology in geological Investigation and mineral Detection in El Azraq-Jordan. Cybergeo. https://doi.org/10. 4000/cybergeo.2856 Bachri I, Hakdaoui M, Raji M et al (2022) Iden ...

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... Anna Pytlak: Conceptualization, Investigation, Formal analysis,Writ- ing, Methodology, Visualization; Anna Szafranek-Nakonieczna: Investi- gation; Weronika Goraj: Investigation; Izabela Śnieżyńska: Writing, Visualization;Aleksandra Krążała:Writing; Artur Banach: Investigation; Ivica Ristović: Resources; ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... the additional e�ects that the presence of noise could impose on the thresholded signal28. �us, our work calls for further and more detailed investigation of experimental data in order to unravel the true nature of underlaying mechanisms causing the onset of temporal correlations in these systems ...
    ... the additional effects that the presence of noise could impose on the thresholded signal”®. Thus, our work calls for further and more detailed investigation of experimental data in order to unravel the true nature of underlaying mechanisms causing the onset of temporal correlations in these systems. ...
    ... Detection �reshold. Phys. Rev. Lett. 117, 230601 (2016). 31. Lebyodkin, M. A., Shashkov, I. V., Lebedkina, T. A. & Gornakov, V. S. Experimental investigation of the e�ect of thresholding on temporal statistics of avalanches. Phys. Rev. E 95, 032910 (2017). 32. Janićević, S., Laurson, L., Måløy, K. ...