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Упит dcterms_subject_txt:General Earth and Planetary Sciences,General Environmental Science

2444 items

  • The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA

    Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski (2017)
    Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...
    Pd(II), Selen, Substitucija, Kinetika, Mehanizam

  • Stepen metamorfizma metaklastita rudnika

    Vanja Ćuk (2024)
    Zadatak ovog rada je bio, potvrda saznanja da se na planini Rudnik dogodio kontaktni metamorfizam gornjokrednih sedimentnih stena i da se ispita intenzitet kontakto-metamorfnih promena. Posle kraćeg opisa geografskog položaja, pregleda ranijih istraživanja i geologije šireg područja, usmerena je pažnja na petrološka ispitivanja metaklastita i na kontaktno-metamorfne facije. Usled stvaranja različitih vulkanogenih facija odnosno usled vulkanskih erupcija, delovanjem zagrejane magme (lave) ili zagrejanih fluida, došlo je do kontaktnog metamorfizma, na granici oligocen-miocen i do stvaranja različitih metamorfnih stena, a ...
    Kontaktni metamorfizam, Rudnik, metakonglomerati, metapeščari, metaalveroliti

  • Intracontinental Basaltic Volcanism Associated with the Melez Shuqran Formation (Southern Libya)

    Toljić Marinko, Cvetković Vladica, Marović Milun, Turki S.M., Abu Aghreb A.F., Popović D (2012)

  • Surface modification of sol-gel synthesized TiO2 nanoparticles induced by La-doping

    Grujić-Brojcin Mira, Armaković Stevan, Tomić N., Abramović Biljana, Golubović Aleksandar, Stojadinović Bojan, Kremenović Aleksandar, Babić Biljana, Dohcević-Mitrović Zorana, Šćepanović Maja (2014)

  • Генеза хидротермалног Cu-Au система Чукару Пеки (Источна Србија)

    Милош Велојић (2021)
    Главни циљ испитивања хидротермалног система Чукару Пеки је разумевање процеса који су довели до његовог настанка, а посебно еволуције рудоносних флуида из којих је настала рудна минерализација. Утврђено је да је овај систем настао у периоду пре 86,78 - 85,19 Ma из магматског интрузива који је био богат водом и имао висок оксидативни потенцијал. Током хлађења, из овог магматског интрузива су издвојени веома врели флуиди, који су имали температуре изнад 600°С и висок салинитет. У ...
    Борска металогенетска зона, Тимочки магматски комплекс, порфирска лежишта, високосулфидациона лежишта, флуидне инклузије, рудне парагенезе, геохронологија, хидротермалне алтерације, LA-ICP-MS
    ... 181-195. 21. Browne, P.R.L., 1978. Hydrothermal alteration in active geothermal fields: Annual Reviews in Earth and Planetary Sciences, v. 6, 229-250. 22. Brown, K. L., 1986. Gold deposition from geothermal discharges in New Zealand. Economic Geology, 81(4), 979-983. 23. Бугарин, М., Маринковић ...
    ... assessment of porphyry Cu deposit fertility. Earth and Planetary Science Letters 472:107-119. 90. Ловрић, М., 1972. Магматске формације горњокредне-терцијарне у Тимочко- средњегорској зони и њихова апсолутна старост. III саветовање о бакру, Бор. 91. Lu, Y., Loucks, R., Fiorentini, M., McCuaig, T., Evans ...
    ... S.S. and McDonough, W.F., 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Geological Society, London, Special Publications, 42(1), 313-345. 132. T ma , C.G. & Mile si, J.P., 2002. Hydrovolcanic breccia pipe structures-General features ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... large dataset (40,078 samples); and the final part presents the best model and general conclusions. 6.6.1 Experimentation procedures For conducting the experiments, the following descriptors were used: Fourier descriptors (with DFT) and wavelet descriptors (with CWT and the "Mexican Hat" wavelet ...
    ... values of load and stroke of the smooth rod, defined by the general function(F(t) = f(S(t)). Here, the abscissa shows the variation in the stroke of the smooth rod over one cycle of the deep well pump operation (including both the upward and downward strokes of the pump rod and smooth rod), while ...
    ... optimizing processes, conserving Tresources, and ensuring system safety. 5.2.1. Operating principle Flow sensors operate based on different principles, depending on the type of sensor and application requirements. The general goal of these sensors is to convert the mechanical flow of a fluid into an ...

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    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 ...
    debris flow, modelling, SPH code, DEM
    ... Ministry of Education, Science and Technological Development of the Republic of Serbia. 7 REFERENCES Chen, C. and Ling, C.H. (1996). ‘’Granular-Flow Rheology: Role of Shear-Rate Number in Transition Regime’’. J. Eng. Mech. 122:469–480. Cuomo, S., Pastor, M., Cascini, L. and Castorino, G.C. (2014) ...
    ... 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 ...
    ... fields of research, and it is found very suitable in different parts of fluid mechanics. Its main difference from other most used methods like finite element and finite difference methods, is in absence of numerical grid, and while mass is presented with particles of solid and fluid phase. Each particle ...

  • Geneza i uslovi cirkulacije voda kompleksnih karstnih sistema Kučajsko-Beljaničkog masiva

    Ljiljana M. Vasić (2017-07-14)
    postupaka koji je primenjen u cilju definisanja zona prihranjivanja i veze izmeđupodzemnih i površinskih voda, vremena koje voda provede u podzemlju, pri čemu seformira jedinstven hemijski sastav i temperaturni režim isteklih voda, bili su polaznaosnova za usmerenje na istraživanje karsta i definisanje teme doktorske disertacije.Kučajsko-beljanički masiv se nalazi u istočnoj Srbiji i pripada oblasti Karpatobalkanskogluka i idealan je poligon za istraživanje, obzirom da se u okviru njega nalazejaka karstna vrela i pojave toplih karstnih izvora na relativno malom rastojanju, ...
    karstni sistemi, geneza podzemnih voda, izotopske metode, starost voda,hidrogeohemijski procesi, dubina cirkulacije podzemnih voda, subtermalne i termalnevode
    ... Improvements in 230Th dating, 230Th and 234U half-life values, and U–Th isotopic measurements by multi-collector inductively coupled plasma mass spectrometry, Earth and Planetary Science Letters No 371–372(2013), pp 82–91 7. Clark I., Fritz P., (1999) Environmental isotopes in hydrogeology, 2nd edition ...
    ... Milanović S., Vasić Lj., Stevanović Z., Ristić Vakanjac V. (2013) 3D Modeling and monitoring of karst system as a base for its evaluation and utilization – A case study from eastern Serbia, Environmental Earth Science – Springer, DOI 10.1007/512665-013-2591-9, pp. 525-532 69. Milanović S. (2014) ...
    ... , Mu¨nich, K.O. (1988) Tritium/3He dating of shallow groundwater, Earth and Planetary Sci. Lett. 89,353–362 88. Sinreich M., Pronk M., Kozel R. (2014) Microbiological monitoring and classification of karst springs Envi. Earth Sci. doi: 10.1007/s12665-013-2508-7 89. Stevanović Z. (1981) Hidrogeološke ...

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... the positions of the main rupture structures is very satisfactory. ACKNOLEDGEMENT 'The funds are provided by the Ministry of science, technological development and innovation of the Republic of Serbia, based on contract no. 451-03-65/2024-03/200126. 102 REFERENCES Hussain Y., Uagoda, R ...
    ... opportunity for a new approach to analysis and visualization that differs from the standard logging data processing. Numerical interpolation and correlation of data from various logging measurements (short-normal and long-normal resistivity, spontaneous potential and gamma ray logging), proved to be a ...
    ... s of karst in terms of surface and underground water circulation, as well as stability and hazard assessment for large objects such as dams (Sretković and Vučković, 2020). 'The use of geophysical characterization of karst systems can provide an economical and non-invasive alternative _ for ...

  • 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
    ... improved blast vibration predictors, Mining Science and Technology 12(2), 1991, 157-165. 17. Rai, R., Singh, T.N., A new predictor for ground vibration prediction and its comparison with other predictors, Indian Journal of Engineering and Materials Sciences 11(3), 2004, 178-184. 18. Siskind, D. E ...
    ... network, International Journal of Rock Mechanics and Mining Sciences 46(7), 2009, 1214-1222. 31. Bakhshandeh Amnieh, H., Mozaianfard, M.R., Siamaki, A., Predicting of blasting vibrations in Sarcheshmeh copper mine by neural network, Safety Science 48(3), 2010, 319-325. 32. Monjezi, M., Ahmadi ...
    ... Mechanics and Mining Sciences 48(1), 2011, 51-58. 35. Kamali, M., Ataei, M., Prediction of blast induced vibrations in the structures of Karoun III power plant and dam, Journal of Vibration and Control 17(4), 2011, 541-548. 36. Mohamed, M.T., Performance of fuzzy logic and artificial ...

  • 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
    ... improved blast vibration predictors, Mining Science and Technology 12(2), 1991, 157-165. 17. Rai, R., Singh, T.N., A new predictor for ground vibration prediction and its comparison with other predictors, Indian Journal of Engineering and Materials Sciences 11(3), 2004, 178-184. 18. Siskind, D. E ...
    ... network, International Journal of Rock Mechanics and Mining Sciences 46(7), 2009, 1214-1222. 31. Bakhshandeh Amnieh, H., Mozaianfard, M.R., Siamaki, A., Predicting of blasting vibrations in Sarcheshmeh copper mine by neural network, Safety Science 48(3), 2010, 319-325. 32. Monjezi, M., Ahmadi ...
    ... Mechanics and Mining Sciences 48(1), 2011, 51-58. 35. Kamali, M., Ataei, M., Prediction of blast induced vibrations in the structures of Karoun III power plant and dam, Journal of Vibration and Control 17(4), 2011, 541-548. 36. Mohamed, M.T., Performance of fuzzy logic and artificial ...

  • Hibridni sistem za planiranje i analizu ventilacije rudnika

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilacija rudnika, informacioni sistemi
    ... degree in mathematics, The M.S. degree in information systems science and Ph.D. degree in computer science from University of Belgrade, Yugoslavia in 1974, 1981 and 1991, respectively. He is an associate professor at the Faculty of Mining and Geology, University of Belgrade, Yugoslavia. Dr Obradović ...
    ... book SUMMARY Engineering planing and design is the process of a conceptual construction of a system, its components or processes whose goal is to meet the desired needs. It is a decision-making process, often interactive, based on mathematics and engineering sciences applied in order to realize the ...
    ... FLUID DYNAMICS Theoretical Foundations of Computational Fluid Dynamics………………………….43 What is CFD ? General Form of the Balance Equation Initial and Boundary Conditions State Equations Laminar and Turbulent Flow Reynold’s Equations Prantl’s Theory of Blending Path Standard k-ε Turbulence Model ...

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije

  • Geomagnetna bura kategorije G5 u maju 2024. godine

    Magdalena Marčeva (2024)
    Zemlja poseduje magnetno polje, koje je generisano u njenom spoljašnjem jezgru. Magnetno polje Zemlje je konstantno izloženo dejstvu sunčevog magnetnog polja i zračenja koje se sa Sunca emituje. Naelektrisane čestice koje pristižu sa Sunca stupaju u interakciju sa magnetosferom, što dovodi do različitih geomagnetnih poremećaja.Geomagnetna aktivnost direktno je proporcionalna intenzitetu sunčevog zračenja koje dolazi do Zemlje. Pod uticajem sunčevog korpuskularnog zračenja dolazi do pojave geomagnetnih bura koje su praćene porastom intenziteta magnetnog polja.Količina i jačina dolaznog sunčevog zračenja zavisi ...
    magnetosfera, sunčevo zračenje, geomagnetna bura, indeksi geomagnetne aktivnosti, polarna svetlost
    ... foxweather.com/earth-space/rare-severe-solar-storm- northern-lights-alabama Gajić, D., 2005. Fizika Sunca, Prirodno-matematički fakultet, Niš, str. 198, 200-206, 212-221. Glover, A. & Lomas, G., 2017. Review of space weather impacts on satellite operations. Journal of Space Weather and Space Climate ...
    ... & Huang, C., 2017. A comprehensive study of geomagnetic storm effects on ionospheric total electron content and its relationship with solar wind parameters. Journal of Space Weather and Space Climate, 7, A33. URL:https://www.SWSC- journal.org/articles/swsc/full_html/2017/01/swsc170014/swsc170014 ...
    ... 1958-1990. godine, str. 1-5, 30, 34, 38- 41. Mihajlović, J. S., 2017. Enciklopedija magnetskih bura, str. 34, 149, 195-197. National Centers for Environmental Information. Geomagnetic indices. URL: https://www.nce1.noaa.gov/products/geomagnetic-indices National Geophysical Data Center, 2024. Dst index ...

  • Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela

    Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)
    ... supply of the main Hungarian consumers and for geothermal energy the deeper aquifer layers are utilized. The studied aquifer system is located between the Danube and Tisa Rivers and extends to the vicinity of Kiskunfelegyhaza on the Hungarian side (North) and to Vrbas in Serbia (South). The main ...
    ... supply of the main Hungarian consumers and for geothermal energy the deeper aquifer layers are utilized. The studied aquifer system is located between the Danube and Tisa Rivers and extends to the vicinity of Kiskunfelegyhaza on the Hungarian side (North) and to VODOPRIVREDA 0350-0519, 42 (2010) 246-248 ...
    ... deposited between the Danube and Tisa Rivers are vital for the economy and the society of the two countries, considering that all of almost one million of inhabitants use them for drinking purpose. The results of the conducted hydrogeological survey, measurements and modelling show insignificant ...

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"

    Nikola Mirković, Luka Crnogorac, Aleksa Paunović (2024)

  • Data from the Digital Repository of the Faculty of Mining and Geology in eScience (eNauka)

    Biljana Rujević, Mihailo Škorić (2024)
    The paper describes linking the Digital Repository of the University of Belgrade, Faculty of Mining and Geology, with the eScience system in terms of transferring metadata about the results of researchers' scientific work. The steps taken to ensure a smooth harvesting of metadata are outlined. Additionally, a presentation of additional improvements to the OAI system is provided, aiming to contribute to the automatic linking of authors with their results in the eScience system.
    репозиторијуми, еНаука, метаподаци, Рударско-геолошки факултет

  • Пример мерења издашности потопљених карстних извора на примеру бране XE Вишеград

    Милан Петровић (2024)
    Главница предстојећег рада, састоји се од обраде и интерпретације података прикупљених током теренских хидрогеолошких истраживања у мају 2024. налокацији бране XE Вишеград.
    хидрогеологија, карст, брана, извори, процуривање
    ... (2020)- Determination ofthe groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina). Environ Earth Sci 79, Article No. 174. https://doi.org/10.1007/s12665-020-08910-x • MunaHosBuh u gp.(2024)-Hacuia8ak upoyuasBatba ...
    ... nOTOny;beHWX KapcrTHWx M3BOpa Ha npMMepy 6paHe XE Buueerpan Cuyuxa 3: Tpoouensuoaqu npuxas mepesa Onumune Buuezpao (Https:"/www.google.copvinti/sr/earth/index.html ) 5 Knuvma fionpyuje npMnana yMepeHO-KOHTMHeHTaMHOM TMIIy KnMMaTa. TipoceuHa neTHhba TeMneparTypa je 19,1 "*C, a 3MMcka -1,3 •*C. TipoceuHa ...
    ... • o AHgpuh, Ha /lpuHu hydpuja{1945)- Tipoc8euia, beoipag, Cpeuja • Bacuh, MunaHoBuh (2021)-Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs • MunaHosBuh, Bacuh(2016)-3D Conduit mogelling ofleakage below a dam situated ...