Претрага
2205 items
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Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy
Paul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries (2022)This work investigates bituminite (amorphous sedimentary organic matter) in Upper Jurassic Kimmeridge Clay source rock via confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM). These petrographic tools were used to provide better understanding of the nature of bituminite, which has been historically difficult to identify and differentiate from similar organic matter types in source rocks. As part of an International Committee for Coal and Organic Petrology (ICCP) working group, an immature (0.42% vitrinite reflectance), organic-rich (44.1 wt% ...Битуминит, Kонфокална ласерска скенирајућа микроскопија, Mикроскопија атомских сила, Органска петрологија, Термичка зрелостPaul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries. "Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy" in International Journal of Coal Geology, Elsevier BV (2022). https://doi.org/10.1016/j.coal.2022.103927
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Geonasleđe Golije i Peštera
Ljiljana V. Grujičić-Tešić (2017-09-01)Sprovedena istraživanja u ovoj studiji obuhvatila su izdvajanje, opis, evaluaciju i valorizaciju objekata geonasleđa u cilju razvoja istraživane oblasti sa stanovišta geonauka, geoturizma i geoekologije. Na izučavanom području objekti geonasleđa su evidentirani, interpretirani, vrednovani i kategorisani, dat je predlog promocije geoobjekata, i na kraju predložena dopuna inventara objekata geonasleđa Srbije.U protekle četiri godine, na kompleksu geotopa Golije i Peštera istražena su geološka svojstva stena (tip stene, starost, fosilni sadržaj, morfološke i hidrogeološke karakteristike itd.), na osnovu čega je bilo ...... Origin and use of the term ‘geotope’ in German-speaking countries. In O’Halloran, D., Green, C., Harley, M., Stanley, M. & Knill, J. (eds) Geological and Landscape Conservation. Geological Society. London:117–120. Wimbledon, W.A.P. (1993). World Heritage Sites and geological conservation. Geotechnica ...
... (2000): Geological Heritage and Geo - tourism. Geological Heritage: Its Conservation and Management. Madrid. pp. 147–156. Maletić, M. (1969): Novi Pazar sa okolinom. NIP Književne Novine. Beograd. str. 571. Maran, A. (2008): Geoconservation in the Balkan region – Practices and legal instruments. Bulletin ...
... Ivanjica. Beograd: 592. Gray, M. (2004): Geodiversity: Valuing and Conserving Abiotic Nature. Department of Geography. Queen Mary. University of London. pp. 2 - 68. Gray, M. (2005): Geodiversity and Geoconservation: What, Why and How? George Wright Forum 22(3). 4-12. Ljiljana V. Grujičić - ...Ljiljana V. Grujičić-Tešić. "Geonasleđe Golije i Peštera" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2017-09-01)
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also Voellmy turbulent coefficient where best-fitted parameter was 1000 m/s 2 . The amount of entrainment material was included and calculated using Hungr approach. Apart from detail ...
... release area, which has an influence on the movement of material, is appended. Selected rheology law is frictional with Voellmy turbulent coefficient; so tanφ=0.35 (φ is frictional angle), and turbulent coefficient ξ= 1000 m/s 2 . Erosion coefficient proposed by Hungr (1995) is set to 0.0001 ...
... Location of case study B) geometry and main parts 3 METHOD SPH (Smoothed Particle Hydrodynamics) was firstly proposed by Lucy (1977) and Gingold and Monaghan (1977) and applied in astrophysical modeling. In time, it became widely used in different fields (Liu and Liu 2010; Chen et al. 1996; Huang ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer
Saša Milanović (2019)Saša Milanović. "Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer" in Carbonates and Evaporites, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s13146-019-00487-2
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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)
N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero. "An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)" in Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier BV (2020). https://doi.org/10.1016/j.palaeo.2020.110145
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Some examples of interactions between certain rare earth elements and soil
... spread use and as the consequence of the widespread use there is an increased quantity of waste that is disposed and often in the inappropriate manner and ends up in the nature, disrupting the resources such as water and soil. The contami- nation occurs due to insufficient legal regulations and controls ...
... on their nature and ionic forces. CONCLUSION The impact between the soil and rare earth elements and the soil capacity to adsorb these elements has been studied. Freundlich adsorption isotherms for the lanthanum, erbium and gadolinium have been presented in two soil types, the clay and sand soils ...
... n happened in several different phases and the extraction in phases with milder extraction agents had occurred. In case of neodymium, the nature of soil is important in particular, since only in certain extraction phases there came to ion extraction, and also due to slightly different neodymium ...Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski. "Some examples of interactions between certain rare earth elements and soil" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC211006095N
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Ventex: an expert system for mine ventilation systems analysis
roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "Ventex: an expert system for mine ventilation systems analysis" in Mining Technology, United Kingdom (1997)
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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: ...Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić. "Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals" in Review on advanced materials science, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/rams-2020-0043
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Lozovik Onyx Marble and Travertine Deposit: Mineralogy, Petrology and Utilisation
Simić Vladimir, Andrić Nevena, Rvović Žarko, Miladinović Zoran, Vuković Nikola. "Lozovik Onyx Marble and Travertine Deposit: Mineralogy, Petrology and Utilisation" in Proceedings / 2nd INTERNATIONAL CONFERENCE „HARMONY OF NATURE AND SPIRITUALITY IN STONE“ no. 2, Belgrade, 2012 Kragujevac: Spektar7:Stone Studio Association (2012): 155-168
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Rocks, waters and human habitats
Stevanović Zoran (2013)Stevanović Zoran. "Rocks, waters and human habitats" in Harmony of nature and sprituality of stone : proceedings of 3rd international conference, 21-22 March 2013, Kragujevac, Beograd:Stone studio association (2013): 175-184
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Man and stone
Milovanović Dragan, Markov Jelena, Đajić Zoran. "Man and stone" in 3rd International Conference Harmony of nature and spirituality in stone, Kragujevac:Stone Studio Association (2013): 243-256
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Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems
Dejan Ćebić, Nebojša M. Ralević (2021)Dejan Ćebić, Nebojša M. Ralević. "Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems" in Journal of Mathematical Chemistry, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10910-021-01253-3
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Cementation of sandstones from Paleozoic, Mesozoic and Tertiary formations in Libya
Vasić Nebojša, Selah Turki, Srećković Batoćanin Danica, Savić Marija, Sherif Khalid, Andrić Nevena (2011)Vasić Nebojša, Selah Turki, Srećković Batoćanin Danica, Savić Marija, Sherif Khalid, Andrić Nevena. "Cementation of sandstones from Paleozoic, Mesozoic and Tertiary formations in Libya" in Proceedings, 1st International Conference “HARMONY OF NATURE AND SPIRITUALITY IN STONE”, 17-18 March 2011, Kragujevac, Kragujevac:Stone Studio Association (2011): 229-341
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Petrologic and technical properties of the Triassic limestone from the open pit Rupeljevo
Avramović Nikola, Matović Vesna, Gajić Violeta, Srećković Batoćanin Danica, Matović Nenad, Munjas Branko (2012)Avramović Nikola, Matović Vesna, Gajić Violeta, Srećković Batoćanin Danica, Matović Nenad, Munjas Branko. "Petrologic and technical properties of the Triassic limestone from the open pit Rupeljevo" in Proceedings / 2nd International Conference Harmony of Nature and Spirituality in Stone, 15-16 March 2012, Kragujevac, Belgrade:Stone Studio Association (2012): 97-107
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Stochastic nature of earthquake ground motion
Kostić Srđan, Vasović Nebojša, Perc Matjaz, Toljić Marinko, Nikolić Dobrica. "Stochastic nature of earthquake ground motion" in Physica A: Statistical Mechanics and its Applications 392 no. 18, Amsterdam:Elsevier (2013): 4134-4145
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The role of non-covalent intermolecular interactions on the diversity of crystal packing in supramolecular dihalopyridine–silver(i) nitrate complexes
Sunčica Roca, Lucija Hok, Robert Vianello, Mladen Borovina, Marijana Đaković, Ljiljana Karanović, Dražen Vikić-Topić, Zora Popović (2020)Six novel 1 : 2 complexes of silver(I) nitrate with 2,5-, 2,6- and 3,5-dihalopyridines (halo stands for chlorine and bromine) were prepared by the reaction of an aqueous solution of AgNO3 and the corresponding pyridine derivative in a water–alcohol solution. In spite of having analogous empirical formulae, they reveal intriguing structural differences, except [Ag(NO3)(2,5-Cl2py)2]n (1) and [Ag(NO3)(2,5-Br2py)2]n (4), which are isostructural. In contrast, [Ag(NO3)(3,5-Cl2py)2]2 (3) is dimeric, while its Br analogue [Ag(NO3)(3,5-Br2py)2]n (6) is polymeric in nature, being the ...Sunčica Roca, Lucija Hok, Robert Vianello, Mladen Borovina, Marijana Đaković, Ljiljana Karanović, Dražen Vikić-Topić, Zora Popović. "The role of non-covalent intermolecular interactions on the diversity of crystal packing in supramolecular dihalopyridine–silver(i) nitrate complexes" in CrystEngComm, Royal Society of Chemistry (RSC) (2020). https://doi.org/10.1039/D0CE01257B
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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... single-block model with Dieterich-Ruina rate and state dependent friction law, for Carlson-Langer model with one and two blocks and velocity dependent friction law, and for Becker single-block model with Dieterich-Ruina rate and state dependent friction law and two state variables. The stability analysis ...
... The effect of loading rate on static friction and the rate of fault healing during the earthquake cycle, Nature 391, 69-72. 109.Marone, C. 1998. Laboratory derived friction laws and their application to seismic faulting, Annual Review of Earth and Planetary Science 26, 643-696 110.Marone, C. ...
... 163.Scholz, C.H. 1998. Earthquakes and friction laws, Nature 391, 37-42. 164.Schreiber, T. 1997. Detecting and analyzing nonstationarity in a time series with nonlinear cross-predictions. Physical Review Letters 78, 843-846. 165.Sibson, R.H. 1977. Fault rocks and fault mechanisms, Journal of the ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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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... single-block model with Dieterich-Ruina rate and state dependent friction law, for Carlson-Langer model with one and two blocks and velocity dependent friction law, and for Becker single-block model with Dieterich-Ruina rate and state dependent friction law and two state variables. The stability analysis ...
... The effect of loading rate on static friction and the rate of fault healing during the earthquake cycle, Nature 391, 69-72. 109.Marone, C. 1998. Laboratory derived friction laws and their application to seismic faulting, Annual Review of Earth and Planetary Science 26, 643-696 110.Marone, C. ...
... 163.Scholz, C.H. 1998. Earthquakes and friction laws, Nature 391, 37-42. 164.Schreiber, T. 1997. Detecting and analyzing nonstationarity in a time series with nonlinear cross-predictions. Physical Review Letters 78, 843-846. 165.Sibson, R.H. 1977. Fault rocks and fault mechanisms, Journal of the ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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Development and Application of Methodology for Quantification of Overbreaks in Hard Rock Tunnel Construction
A methodology for determining overbreaks in hard rock tunnel construction using the drill-and-blast technique is presented in this paper. The methodology was developed for and applied to crystalline medium- to thick-bedded limestone, but it can be used in any jointed hard rock mass. Overbreaks are inevitable in hard rock tunnelling in a low-confinement environment (shallow tunnels up to several hundred meters deep) as a result of wedge failures along unfavourably oriented discontinuities caused by blasting. It is widely accepted ...hard rock, drill-and-blast, geological overbreak, technological overbreak, stability criterion, discontinuity orientation, tunnel constructionZoran Berisavljević, Dragoljub Bajić, Vojkan Jovičić. "Development and Application of Methodology for Quantification of Overbreaks in Hard Rock Tunnel Construction" in Applied Sciences, MDPI (2023). https://doi.org/10.3390/app13031379
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Malathion-induced inhibition of human plasma cholinesterase studied by the fluorescence spectroscopy method
The in vitro effect of technical grade malathion was assessed via the kinetic parameters of human plasma butyrylcholinesterase (BChE) using N-methylindoxyl acetate as a substrate for BChE. An inhibitor kinetics study demonstrated the existence of a biphasic inhibition curve, indicating high- and low-affinity binding sites of malathion. The IC50 values as calculated from the experimental inhibition curves were 1.33 × 10–9 and 1.48 × 10–5 M for the high- and low-affinity binding sites, respectively; Hill’s analysis gave 1.29 × ...V. M. Pavelkić, K. S. Krinulović, J. Z. Savić, M. A. Ilić. "Malathion-induced inhibition of human plasma cholinesterase studied by the fluorescence spectroscopy method" in Russian Journal of Physical Chemistry A, Pleiades Publishing Ltd (2008). https://doi.org/10.1134/S0036024408050312