Претрага
1705 items
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Integrisanje heterogenih leksičkih resursa
Osnovna aktivnost Grupe za obradu prirodnih jezika na Matematičkom fakulteta Univeziteta u Beogradu je usmerena na razvoj različitih resursa za obradu srpskog jezika. Među njima su posebno značajni sistem morfoloških rečnika srpskog jezika razvijenih u okviru mreže RELEX [1] i semantička mreža (tipa wordnet) za srpski jezik razvijena u okviru međunarodnog projekta Balkanet. Radi se o dva heterogena leksička resursa, razvijena na osnovu sasvim različitih modela, koji samim tim sadrže i različite vrste leksičkih informacija. Integracijom ovih resursa, informacije ...... WN u XML formatu olakšava je korišćenje ovih alata. Pri tome, XML Schema definition language (XSD) omogućava definisanje strukture i tipova podataka XML dokumenata. Slika 3 prikazuje grafičku reprezentaciju XSD šeme srpskog WN. Slika 3. XSD šema srpskog WN u .NET XML dizajneru. Element SEM je ...
... ali postoji u rečniku DELAS u obliku odgovarajućeg koda. Ta informacija se može preuzeti iz rečnika DELAS i pridružiti odgovarajućoj reči u SWN, u obliku XML elementa uključenog u elementkojim se definiše reč u sinsetu. U primeru (3), u prvom slučaju pridružena informacija bila bi V157 ...
... tako da on potpunije pokriva jezik. Zbog toga, srpski MR može manje da dobije od WN nego obrnuto. Iz tog razloga je stvaranje potpuno semantički anotiranog srpskog DELAS rečnika odloženo dok ova dva resursa ne postanu uporediva po veličini. Osim toga, razvoj srpskog morfološkog rečnika složenih ...Ranka Stanković, Cvetana Krstev, Duško Vitas, Ivan Obradović, Gordana Pavlović-Lažetić. "Integrisanje heterogenih leksičkih resursa" in Festivalski katalog 11. Festivala informatičkih dostignuća INFOFEST 2004, 26th September - 2nd October, 2004, Budva, Montenegro, INFOFEST (2004)
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Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis
... Pyr400 to Pyr500. The same 15 тејајед to methylfluorene (МЕ) гано (2-+3-MF)/(1-+4-MF) and methyiphenanthrene (МР) index 3 (МРТ 3). However, maturity rattos., MFI 1 and МРТ 1 which contain unsubstituted aromatics (fluorene, phenanthrene) in the denominator do not show clear trends from Pyr400 to Pyr500 ...
... attributed to the preferable release ог unsubstituted aromatics fluorene (Е) and phenanthrene compared (0 that of their methylated counterparts, which 15 documented by apparent дестеазе ог УМЕ/Е and PAI 1 ratios from Pyr400 to Pyr500. 5С values ог phenanthrene in pyrolysates are very close to those observed ...
... can be attrbuted to their possible formatton from non-hopanoid triterpenoids which are enriched in С than diterpenoids (Bechtel ег al.. 2008). Negligible enrichment in С of aromatic compounds is observed from Pyr400 to Pyr500. L њ + : “ м “ ШРОРИИИИ | РИ ЛИГР УИИИ Figure 1. Тога оп сћготагортатз ...Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović. "Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis" in 29th International Meeting on Ogranic Geochemistry, 1-6 September 2019, Gothenburg, Sweden , European Association of Organic Geochemists (2019)
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Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households
The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...... total final energy use [1], [2]. The use of solid fuels for heating of households continues to be common practice within European countries [3]. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter, i.e., three times more than road transport in ...
... such as household heating stoves or small boilers for single houses, apartment buildings, etc. [3]. In Household Budget Survey 2018, published by the Statistical Office of the Republic of Serbia [5], solid fuels (wood and coal) are used in 56.6% of households for heating in Serbia. The usage ...
... the waste treatment phase, wood pellet-based HS achieves more benefits than firewood-based HS due to the quantity of materials that could be recycled. 5 CONCLUSIONS The way of using wood biomass for heating is a very important issue that reflects on energy consumption and environmental performance ...Boban Pavlović, Dejan Ivezić, Marija Živković. "Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households" in 5th International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo, 2020, University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo (2020)
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Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog
Maja D. Milošević (2016-12-09)Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva... Mg 0.6841 4 6 3 2 Mn 0.0072 7 14 11 8 Na 0.0897 49 100 0 0 Ni 0.0036 1 8 2 2 Ti 0.3984 0 2 0 0 kaol.C elementi % AA MP I MP 24h MP 48h Ba 0.0178 2 3 1 0 Ca 0.2505 74 31 11 14 Fe 0.5057 0 5 1 0 K 0.8249 1 3 2 2 Li 0.0158 0 3 1 0 Mg 0.1439 16 16 6 7 Mn 0.0065 15 8 5 4 Na 0.0004 100 ...
... efikasnosti mon.B elementi % AA MP I MP 24h MP 48h Ba 0.0137 59 33 5 1 Ca 1.6995 79 35 6 4 Fe 3.2532 0 47 5 1 K 0.1624 26 54 16 9 Li 0.0034 1 37 6 1 Mg 2.0398 8 49 6 1 Mn 0.0359 8 42 6 2 Na 0.1829 79 100 0 0 Ni 0.0027 3 38 7 4 Ti 0.2965 0 10 4 2 ill-kaol.M1 elementi % AA MP I MP 24h MP 48h ...
... smektit-illit / 45 43 / / / / / illit / / / 26 48 46 46 8 kvarc 11 19 18 9 21 21 19 2 feldspati / 10 15 8 2 1 3 / limonit 5 7 7 3 3 9 10 1 nečistoće 2 1 4 / 1 / / 1 vlaga 3 4 2 2 1 3 / 1 ukupno 100 100 100 100 100 100 100 100 Na osnovu izračunatog mineralnog sastava i metodom rendgenske ...Maja D. Milošević. "Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-12-09)
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Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata
Dejan N. Radivojević (2014-12-30)Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika... basenu Prilog broj 3. Progradacija padine ivice šelfa paleo-Dunava i paleo-Tise u vreme gornjeg miocena - donjeg pliocena preneogen na površini neogeni vulkanoklastiti na površini šelf - ivica padine pad padine dubina preneogene podloge 0 1 2 3 4 5 6 7 8 km 4 3 3 3 3 4 5 5 6 6 2 2 2 2 ...
... The Petroleum System, 3–24. In: Magoon, L., Dow, W. (Eds.), The Petroleum System – from Source to Trap, AAPG Memoirs, v. 60, p. 655. Magyar, I., and O. Sztanó, 2008, Is there a Messinian unconformity in the Central Paratethys?, Stratigraphy, v. 5(3–4), p. 245–255. Magyar ...
... 1 2 2 2 2 2 0 2 2 2 2 2 2 2 2 2 2 1 1 1 2 1 1 1 1 2 2 1 1 1 1 1 0 0 2 2 1 56 6 5 4 4 4 3 3 32 4 2 1 1 1 1 1 2 1 1 1 3 3 3 2 3 3 7 Dunav D un av Sava Mureş Crişul alb Tamiš Tisa Dunav M orava Subotica Baja Zrenjanin Ruma Beograd ...Dejan N. Radivojević. "Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-30)
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Polimorfne promene materije nastale mlevenjem minerala
Milan Petrov, Ljubiša Andrić, Milena Kostović, Vladimir Jovanović, Dragan Radulović, Dejan Todorović, Branislav Ivošević (2023)U radu su prikazani rezultati istraživanja iz oblasti usitnjavanja, sakupljani duži niz godina, u Institutu za tehnologiju nuklearnih i drugih mineralnih sirovina. Poznato je da se područja sa frekfencijama preko 3·1011 do 3·1014 Hz nalaze u elektromagnetnom spektru infracrvenog i daleko infracrvenog emitovanog ili apsorbovanog zračenja. U radu su prikazani rezultati kada se materijal i kugle u mlinu nalaze na jednoj od pomenutih frekfencija, što nam omogućava da pomoću Borovog uslova frekfencija pristupimo izračunavanju emitovanih i apsorbovanih molarnih energija ...Milan Petrov, Ljubiša Andrić, Milena Kostović, Vladimir Jovanović, Dragan Radulović, Dejan Todorović, Branislav Ivošević. "Polimorfne promene materije nastale mlevenjem minerala" in X Kolokvijum o pripremi mineralnih sirovina univerzitet u beogradu, Rudarsko-geološki fakultet, 08.12.2023., Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin
Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek. "Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-1207-SPSEINTRO.1
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Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia
Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović . "Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia" in Groundwater: Occurrence and Significance for Human Health, CRC Press, Balkema - Taylor & Francis Group (2014)
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Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone
Aleksandar Luković (2021)Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...... položaje zauzima Fe3+ dok su oktaedarske šupljine podeljene između Fe2+ i Fe3+ katjona (slika 3). U skladu s tim opšta kristalohemijska formula magnetita je Fe3+(Fe3+/Fe2+)2O4 (Verwey & de Boer, 1936). 5 Slika 2. Struktura magnetita. Crvenom bojom su označeni Fe3+ katjoni smešteni u te ...
... 4.87 4.92 5.10 4.89 Ta 5.65 5.22 5.37 5.11 4.92 5.67 5.67 5.80 5.53 5.48 W 0.19 0.55 0.21 0.19 0.22 0.20 0.21 0.21 0.21 0.27 Pb - 1.71 0.32 - - - 1.18 0.39 0.57 0.60 Th - 0.05 - - 0.07 - 0.12 - - 0.11 LA-ICP-MS (ppm) (Magnetit) zrno 1 zrno 2 zrno 3 zrno 4 zrno 5 zrno 6 obod jezgro ...
... Hematit Zrno 1 Zrno 2 Zrno 3 Zrno 4 Zrno 5 Zrno 6 Zrno 7 Mg 125.28 96.62 53.55 55.06 35.95 37.40 53.29 Al 2732.30 2336.85 3084.41 4162.45 2370.65 2088.38 15175.36 Si 3368.51 2381.52 2290.18 4281.80 2411.59 2048.34 14554.54 P 57.42 64.35 57.65 54.22 54.63 53.67 48.01 Ti 1460.93 1579.08 4972.90 ...Aleksandar Luković. Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone, Beograd : [A. Luković], 2021
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Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica
Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and TechnologyNatalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel. "Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica" in International Soil and Water Conservation Research, Elsevier BV (2019). https://doi.org/10.1016/j.iswcr.2018.12.004
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Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... which is rare in deep aquifers. The dominant anions are hydrocarbonates, while the concentrations of sulfates (3-90 mg/L), chlorides (5-50 mg/L), and fluorides (0.1-1 mg/L) are low compared to the usual levels found in groundwater [35]. Maximum arsenic concentrations in groundwater used for drinking water ...
... µg/L (Fig. 5). The most frequent causes of physicochemical non-compliance in Srem are concentra- tions of iron and manganese higher than MPC [19]. In the Srem District, the mineral content of groundwater was found to be lower than in other parts of Vojvodina. Total hardness measured from 5°dH to 17°dH. ...
... are as high as 4.4 mg/L [5]. The problem with groundwater quality and arsenic con- centrations above MPC are seen in countries that share the Pannonian Basin (Serbia, Hungary, Romania, Croatia). Earlier research of arsenic in Serbian groundwater showed As levels from 5 to 349 μg/L [6]. In several regions ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
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INVENTS: A Hybrid Mine Ventilation Planning and Design System
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...... York, 1994. [3] Hartman,H., (ed.), SME Mining Engineering Handbook, Society for Mining, Metallurgy, and Exploration, Inc. Littleton, Colorado, 2nd Ed. Vol.1., 1992. [4] Kowalik,J.S., (ed.), Coupling Symbolic and Numerical Computing in Expert Systems, North-Holland, Amsterdam, 1986. [5] Lilić,N., Stanković ...
... deposits are undertaken in order to collect as much information as possible for the planing and design of technological systems for deposit exploitation. System planing is an introduction to the mine design process. In the planning process key relations are defined that have to be taken into account in the ...
... of a basic or initial network and an appropriate database related to this network. The ventilation design process has to continue throughout the construction of the mine ventilation system as well as its maintenance, in order to secure the highest possible level of system use and effectiveness. ...Lilić Nikola, Stanković Ranka, Obradović Ivan. "INVENTS: A Hybrid Mine Ventilation Planning and Design System" in Proceedings of International Scientific Conference of FME Session 4: Automation Control and Applied Informatics , Hong Kong : iConcept Press (2013)
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INVENTS: a hybrid system for subsurface ventilation analysis
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...... York, 1994. [3] Hartman,H., (ed.), SME Mining Engineering Handbook, Society for Mining, Metallurgy, and Exploration, Inc. Littleton, Colorado, 2nd Ed. Vol.1., 1992. [4] Kowalik,J.S., (ed.), Coupling Symbolic and Numerical Computing in Expert Systems, North-Holland, Amsterdam, 1986. [5] Lilić,N., Stanković ...
... deposits are undertaken in order to collect as much information as possible for the planing and design of technological systems for deposit exploitation. System planing is an introduction to the mine design process. In the planning process key relations are defined that have to be taken into account in the ...
... of a basic or initial network and an appropriate database related to this network. The ventilation design process has to continue throughout the construction of the mine ventilation system as well as its maintenance, in order to secure the highest possible level of system use and effectiveness. ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "INVENTS: a hybrid system for subsurface ventilation analysis" in Proc. of International Scientific Conference of FME, September 2000, Ostrava, FME (2000)
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Mikrobiološki diverzitet kiselog jezera Robule i uticaj jezerske vode na oksidaciju sulfidnih minerala
Srđan B. Stanković (2016-09-11)Jezero Robule, formirano u podnožju rudničke raskrivke Oštreljski planir (Rudnik bakra Bor), je nastalo kao posledica rudarskih aktivnosti. Mikrobiološki diverzitet ekstremno kiselog jezera Robule ispitivan je primenom kako klasičnih mikrobioloških metoda (svetlosna mikroskopija i kultivacija na selektivnim podlogama) tako i primenom savremene metode molekularne biologije (analiza polimorfizama terminalnih restrikcionih fragmenata; T-RFLP). Takođe, ispitivan je i potencijal i efikasnost jezerske vode u biološkom luženju mineralnog koncentrata, kao i u bioluženju uzoraka stare flotacijske jalovine Rudnika bakra Bor.Na osnovu dobijenih rezultata ...... tal Microbiology 62 (2): 625-630 107. Torsvik V., Ovreas L. (2002) Microbial diversity and function in soil: from genes to ecosystems, Current Opinion in Microbiology 5 (3): 240-245 108. Tributsch H., Rojas-Chapana J. (2007) Bacterial strategies for obtaining chemical energy by degrading sulfide ...
... Reakciona smeša, finalne zapremina 25 µL, sadržala je 12,5 µL master miksa, po 10 pmol 27F - Cy-5 obeleženog prajmera i 1387R (5'-GGGCGGAGTGTACAAGGC-3'; Marchesi et al., 1998) prajmera, 2,5 mM MgCl2, 5 % DMSO i 1 µL DNK uzorka. Finalna zapremina je podešena dodavanjem destilovane vode. Kao matrica ...
... sredini gvožđe(II)sulfat podleže hidrolizi, pri čemu nastaje slabo rastvorljivi gvožđe(III)hidroksid koji precipitira: Fe2(SO4)3 + 6H2O→ 2Fe(OH)3(s)+ 3H2SO4 (5) Neke vrste acidofilnih mikroorganizama oksiduju elementarni sumpor, što vodi nastanku sumporne kiseline i snižavanju pH vrednosti ...Srđan B. Stanković. "Mikrobiološki diverzitet kiselog jezera Robule i uticaj jezerske vode na oksidaciju sulfidnih minerala" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-11)
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The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796
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Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака
Зоран Гојковић (2023)Површински коп, као систем који обезбеђује енергетску стабилност или снабдевање сировинама које су од изузетне важности за привредни напредак, својим функционисањем утиче на околна насељена места. Међу бројним аспектима овог утицаја, може се издвојити издвојити и анализирати утицај вертикалних и хоризонталних померања која се јављају на површи терена. Мониторинг вертикалних и хоризонталних померања површи терена околних насељених места треба да има што бољу временску резолуцију (временски период између праћења деформација) како би се вертикална и хоризонтална померања контролисала и ...Зоран Гојковић. Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака, Београд : Универзитет у Београду, Рударко - геолошки факултет, 2023
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Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia
Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...... sediments, while to the south, the basement is composed of karstified middle Triassic limestones. In previous research, Simić, Milivojević and Martinović contributed significantly to the estimation and utilization of the geothermal resources of the wider area [3-5]. In relation to the aforementioned ...
... quartz geothermometers, which are in the range of 40-60 *C [8]. 5. CONCLUSION Geological data collected to investigate boron and lithium mineralization in the "Valjevo-Mionica" basin are combined with results of previous research to estimate the geothermal potential of the area. Within the applied ...
... air temperature). These values are considered high compared to the 0.03 "C/m adopted as the average for this part of Europe [3]. The Neogene geothermal gradient map is combined with the map of the thickness of the Neogene sediment cover to estimate temperatures at the upper boundary of the reservoir ...Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić. "Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia" in Proceedings 9th International Conference mining and environmental protection, MEP23, Sokobanja, 24-27th May 2023, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... of investigated sediments and crude oils from Rusanda (well 5; depth interval 2665–2675 m) and Elemir (well 19; depth interval 1640–1644 m) oil fields (Figs. 3–8; Tables IV and V), which are located close to the investigated area Fig. 5. GC–MS chromatograms of terpanes m/z 191 of the saturated fraction ...
... isolated from Elemir crude oils. For peak assignments, see the legend to Fig. 3. Fig. 7. GC–MS chromatograms of steranes, m/z 217 of the saturated fraction isolated from Rusanda crude oils. For peak assignments, see the legend to Fig. 4. _________________________________________________________ ...
... 153 20 25 52 23 M21 136 0–10 29 50 21 M22 136 0–10 47 41 12 M25 123 0–10 20 55 25 M9 88 20 54 33 13 M7 60 20 28 53 19 M8 50 20 28 52 20 M6 12 0–5 3 65 32 M4 8 0–10 16 57 27 M5 6 20 36 41 23 ______________________________________________________________________________________________________ ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... for V and 74.53% for O, are close to the values of stoichiometric V5»Os. Molecules 2023, 28, 655 5of18 Spectrum 1 V A o A |A o 1 2a 3 4 5 6 7/ B 0 10 Full Scale 4432 cts Cursor:-0.124 KeV (0 cts) keV v Spectrum 2 V o V r - ——— e O 1 2 3 4 5 6 7 8 9 10 100 ım Electron Image 1 ...
... portion of the curves to the energy axis, as shown in Figure 6. According to this procedure, the bandgap energy Eg values, assuming the allowed direct and indirect transitions, are estimated as ~2.24 and ~2.11 eV, respectively. Z< 04 = || 5 m G 0.3 . || Š 02- > | < 3:: 0.1- & i E,= 2.11eV ...
... || . . 0 5 10 30 60 120 0 5 10 30 60 120 Time (min) Time (min) Figure 12. NAD, PIN, and MET mixture degradation kinetics under UV irradiation: (a) without VOs and (b) with V»Os catalyst. 9.00 MDF W Photocatalysis 8.00 7.00 6.00 „. 500 — 4.00 3.00 2.00 1.00 0.00 0 5 10 30 60 ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024)