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Упит dcterms_creator_txt:Lazić P. Biljana

1050 items

  • Utvrđivanje Bondovog radnog indeksa Pb-Cu-Zn rude rudnika Rudnik

    Jovana Jović (2024)
    Završni rad sa temom ,,Utvrđivanje Bondovog radnog indeksa Pb-Cu-Zn rude rudnika Rudnik” sastoji se iz opšteg i specijalnog dela. OPŠTI DEO sadrži: U opštem delu dato je: Uvod, Geografski položaj i istorijski razvoj rudnika "Rudnik", kratak prikaz geologije ležišta i eksploatacije rude kao i opis tehnološkog procesa flotacije rudnika “Rudnik”. SPECIJALNI DEO sadrži:U specijalnom delu dato je:Cilj istraživanja, teorijske osnove usitnjavanja, Bondov radni indeks, metode ispitivanja uzoraka, uzorkovanje i obrada uzorka; Metode ispitivanja; Rezultati ispitivanja po standardnom Bondovom postupku i po ...
    Bondov radni indeks, standardni postupak, skraćeni postupak, ruda olova, bakra i cinka, rudnik „Rudnik“
    ... koje smo postavili u ovom Završnom radu. 66 5. Literatura 1. Magdalinović N., Meljivost mineralnih sirovina, Beograd 1997. 2. Deušić S., Lazić P. “Mašine I uređaji u pripremi mineralnih sirovina 1”,RGF Beograd,2013 3. Knežević D., Priprema mineralnih sirovina, RGF Beograd, 2001 4. Tomanec ...
    ... Bondovog radnog indeksa Pb-Cu-Zn rude rudnika Rudnik Kandidat: Mentor: Jovana Jović R85/14 Prof dr. Predrag Lazić Beograd, Septembar, 2024. Komisija: Prof.dr Predrag Lazić, mentor Rudarsko-geološki fakultet, Beograd Prof. dr Milena Kostović, član Rudarsko-geološki fakultet, Beograd ...
    ... e specifične površine sirovine: 44,5 W,; = 1,1 ,[kWh/t] 10 10 p9?3gGo08(__ – __ TSGOO(O — ~p gde je: Ex – specifična potrošnja energije, [kWh/sht]; C» – konstanta proporcionalnosti, [kWh/sht]; P- veličina kvadratnih otvora sita kroz koje prolazi 80 % sirovine posle usitnjavanja, [um]; ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

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

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

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... Berlin, p 976 Folk R L (1959) Practical petrographical classification of limestones. Bulletin 43, American association of petroleum geologists, pp 1-38 Folk R L (1962) Spectral subdivision of limestone types. In: Ham W E (ed) Classification of carbonate rocks. AAPG Mem. 1, Tulsa, p 6284 ...
    ... McCabe S, Smith B J, Warke P A (2007) An holistic approach to the assessment of stone decay: Bonamargy Friary, Northern Ireland. In: Pirikryl R, Smith B J (ed) Building stone decay: from diagnosis to conservation. Geological society, Special publica- tions, London, vol 271, p 77–86 Nomrmal 1/88 (1990) ...
    ... DiLi, (1; Fitzner et al. 2002a) and progressive damage index Diyrog Were calculated (2; Fitzner et al. 2002b): B+(2·:C)+(3·D)+(4·E)+(5-F 0OO i G ) p — ( B+(4·C)+(9·D)+(16·E)+(25· F) 100 Dlpyog- (2) Damage indices were first calculated for the whole gate. Then the gate was divided by two axes—first ...

  • 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

  • Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition

    Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)
    Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...
    hidrogeotermalni sistem, gornjokredni krečnjaci, trijaski mermeri, Brus

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... pp. 147—154. [36] A. L. Chaffee, G. P. Knowles, Z. Liang, J. Zhang, P. Xiao, and P. A. Webley, “CO2 capture by adsorption: materials and process development,” International Journal of Greenhouse Gas Control, vol. 1, no. 1, pp. 11—18, 2007. [37]Markewitz, P. et al.: Worldwide innovations in the ...
    ... Brandani, N. Mac Dowell, J. R. Fernandez, M.-C. Ferrari, R. Gross, J. P. Hallett, R. S. Haszeldine, P. Heptonstall, A. Lyngfelt, Z. Makuch, E. Mangano, R. T. J. Porter, M. Pourkashanian, G. T. Rochelle, N. Shah, J. G. Yao, P. S. Fennell, Energy Environmental Science 2014, 7, 130—189. [22] Matter ...
    ... an example of a full-scale carbon capture, utilization and storage process in detail. 420 - 400 / 380 - 340 320 - a t m o s p h e r i c CO , (p ar ts pe r mi ll io n) 280 260 — T T U T T T T T T 1750 1780 1810 1840 1870 1900 1930 1960 1990 2020 year Figure 1.1 A clear ...

  • Појава НИМБИ синдрома међу становништвом Лознице и околине услед планираних рударских активности

    Сара Арсенић (2024)
    Рад обрађује историјски развој нимбизма, његову анализу, природе и димензије, и његово превазилажење. Анализа се фокусира на планиране рударске активности у околини Лознице и њихов утицај на ставове локалног као и околног становништва и стручне јавности укључујући резултате испитивања јавног мњења кроз анкету. Анкета садржи тринаест питања и рађена је за три групе: становници Београда и околине, Лозница и оклоина и стручна јавност. Такође се и разматра како се различити политички и еколошки фактори манифестују у овом контексту, као ...
    нимби синдром, пројекат „Јадар“, отварање рудника, анкетирање јавног мњења
    ... IIpHMaMbHMa. Tpeha rpyna onHocH Ha cormHJazHe yciryre o0jeKaTa H pa3He yaraba HLIp. y eHeprujuH Berpa (Cowan, 2003, p. 380; Gerrar, 1994, p. 496; Takahashi, 1997, p. 903; Wolsink, 2000, p. 53). TeHepajiHo, OTHOp JaBHOCTH IHIpeMa HeKOTr IIpOjKeTa Cc CaCTOJH OJL HČT OCHOBHHX eJIČCMCHaTa: 1. JIogKanmHH ...
    ... nojijeiHaKO IIeCH3HOHHCaHHX H CTy}IeHaTa ca 13%. [lon: )}{eHckM M)}KeHckM 60% p MyuikM Cnuka 9: IH{ojn (IHHpuka3 y nponeHTHMa HcHHTaHOT MyHIKOT H »KCHCKOr IIOJta y JloaBHnu.) [lon: M{eHckM 50% MBiKeHcCHM p MyuikM Cnuka 10: IIojt (IHđpuka3 y nponeHTHMa HcIHHTaHOT My1IHIKOT H ;KCHCKOT II0J12 ...
    ... CpenMbe o6pa3oBaMbbe m Cpenwbe o6paa3oBabbe 60% | P BMule M BMCOKO Cnuka 14: CreneH o0pa3oBama HcnuraHuika (IIpoueHryanHui rnpHka3 cTertteHa 00Opa30Batba y OKOJIHHH JlosHune.) 29 PanHu cTaTyc: TleH3MoHep 13% HesanocneH 13% p CryneHT M 3anocneH m He3anocneH 3anocneH | 47% | ...

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka

  • Definisanje specifičnih uslova dreniranja podzemnih voda na karstnim vrelima Krupac 1 i 2

    Kristina Gavrilović (2024)
    Izvorište Krupac se nalazi u jugoistočnom delu Srbije, u blizini grada Pirota i deo je sistema za vodosnabdevanje grada i okolnih mesta. Vrela Krupac 1 i Krupac 2 su gravitaciona karstna vrela, locirana na kontaktu jursko-krednog kompleksa stena sa neogenim naslagama Pirotske kotline, čije su specifičnosti uslova dreniranja, kao i uslova cirkulacije, ispitane hidrohemijskim i izotopskim metodama, kao i opitom obeležavanja ponora Golema dubka. Ustanovljeno je da se radi o mladim vodama i sistemu bez duboke cirkulacije podzemnih voda, ...
    izvorište “Krupac”, specifični uslovi dreniranja, karstna izdan, režim izdani
    ... (mg/1 W'0> ) VMZP 002 mg/| <0.01 0.01 3 Nitrati (mg/I NOxs ) SM P-V-3I1/C mg// 2.89 50 4 Gvožđe, Fe VMZP 003 mg// 0 0.3 5 Mangan (mg/I Mn) SM P-V26/B mg// 0 0.05 6 Ostatak isparenja SM P-IV-4 mg// 408 7 El provodljivost SM P-IV-I1 mg// 583 1000 49 Tabela 8.3. Kvaliteft podzemne vode na ...
    ... Nitriti (mg/I /0z ) VMZP 002 mg, <0.01 0.01 3 Nitrati (mg/I W0x ) SM P-V-31I/C mg, 351 50 4 Gvožđe, Fe VMZP 003 mg, 0.3 5 Mangan (mg/I Mn) SM P-V26/B mg, 0.05 6 Ostatak isparenja SM P-IV-4 mg, 362 7 EI provodljivost SM P-IV-II mg, 520 1 000 50 Tabela 8.4. Terenska merenja fizičko- hemijskih ...
    ... M-II-5 Bez Bez 4 Ukus SM P-IV-3 Bez Bez 5 Mutnoća NTU SM P-IV-4/B NTU 0.32 1 6 pH PV-8 M-III-2 7.2 6.8-8.5 7 UtrošakKMn0e& (mg/I) PV-8 M-III-7 mg/I 4.71 8 & Rezidualni hlor-Ciz PV-8 M-III-23 mg// 0 0.5 9 Hloridi CI-(mg/I CI) PV-8 M-III-6 mg/I 5.24 200 0 Fluoridi F- SM P-V-15/A mg/I 0 1.2 || ...

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides

    Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)
    Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis
    ... Earth, 89(B7), 5835–5848. Arkai, P., Balogh, K., & Dunkl, I. (1995). Timing of low-temperature metamorphism and cooling of the Paleozoic and Mesozoic formations of the Bikkium, innermost Western Carpathians, Hungary. Geologische rundschau, 84(2), 334—344. Arkai, P., & Ghabrial, D. S. (1997). Chlorite ...
    ... Research, 11(4), 453—475. Dimitrijević, M. (1982). Dinarides: an outline of the tectonics. Earfh Evol Sci, 1, 4-23. Dimo-Lahitte, A., Monić, P., and Vergćly, P., 2001, Metamorphic soles from the Albanian ophiolites: Petrology, 40Ar/39Ar geochronology, and geodynamic evolution: 7Tecfonics, 20, 1, ...
    ... the fabric of Palaeozoic formations in the Drina-Ivanjica region: Geološki anali balkanskoga poluostrva, 49, 11—160. Duretz, T., Agard, P., Yamato, P., Ducassou, C., Burov, E. B., & Gerya, T. V. (2016). Thermo-mechanical modeling of the obduction process based on the Oman ophiolite case. Gondwana ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... 20voda%20apv.pdf 20. PAPIĆ P. Groundwater quality of North Backa, utility assessment and treatment. Final report of the project: SUDEHSTRA. University of Belgrade, Faculty of Mining and Geology, Department of Hydrogeology, Belgrade, pp. 71-75, 2009. 21. MANDIĆ M., PAPIĆ P. A Contribution to the Und ...
    ... in drinking water from the public water supply system in the South Pannonian Basin and to show the effects of drinking arsenic-rich water. 1784 Papić P., et al. Fig. 1. Geographical location of the test area. Experimental Procedures Sampling, Field Measurements and Laboratory Analyses Groundwater ...
    ... that the groundwa- ter is loaded with iron and manganese. Additionally, at many locations the ammonium ion exceeds regulated levels. Only 1786 Papić P., et al. Table 1. Comparison of Regulations of Republic of Serbia with the EU Directives with MPC. EU Directive 1998/83/EC drinking water Regulation ...

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... texts were used for the both training and evalu- ation (on average P = 75.1%, R = 62.6% and F1 = 68.3%), whilst for training on general te- xts, such as news data, and testing on literary texts the results were much poorer (on average P = 57.8%, R = 37.7% and F1 = 45.7%). 2NER&Beyond, http://nerbeyond ...
    ... comparing the obtained annotations with the ones given in the test subset of the SrpELTeC-gold, we obtained the precision (P ), recall (R) and F1 scores displayed in Table 3. Type P R F1 PERS 0.953 0.936 0.944 ROLE 0.940 0.917 0.928 LOC 0.849 0.778 0.812 DEMO 0.781 0.758 0.769 ORG 0.903 0.368 0.523 WORK ...
    ... entity distri- bution over SrpELTeC-eval. Named entities are represented by their first letter (e.g. P re- presents PERS). It should be noted that the EVENT type did not occur in this dataset. ID P R L D O W ∑ tok 19070 44 55 23 23 3 0 2,027 19180 18 13 2 5 0 5 3,928 19121 33 18 14 2 0 0 3,045 Table ...

  • 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
    ... publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 67 Z A P I S N I C I S R P S K O G G E O L O [ K O G D R U [ T V A za 2020. godinu COMPTES RENDUS DES SÉANCES DE LA SOCIÉTÉ SERBE DE GÉOLOGIE pour les année 2020 ...
    ... and relative changes in sea level: Marine Geology, v. 44, p. 181-212. KENTER, J.A.M., HARRIS, P.M. AND DELLA PORTA, G. 2005, Steep microbial boundstone- dominated platform margins – examples and implications: Sedimentary Geology, v. 178, p. 5 - 30. KERANS, C. and TINKER, S.W. 1999, Extrinsic s ...
    ... година) Издвојено осам секвенци Анализирано више од 1958 препарата Анализа садржаја C и O (изотопски садржај за 1958 узорка) Анализа садржаја P (1182 узорка) MIRESCU et al , 2019 Источни део Гетских навлака (Румунија) Седам стартиграфских секција Дебљина седимената је 160-1200 ...

  • 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
    ... Mineral Chemistry of Metal Sulfides; Cambridgjee University Press: Cambridge, UK, 1978. 2. · Merkulova, M.; Mathon, O.; Glatzel, P.; Rovezzi, M.; Batanova, V.; Marion, P.; Boiron, M.C.; Manceau, A. Revealing, the Chemical Form of “Invisible” Gold in Natural Arsenian Pyrite and Arsenopyrite with High ...
    ... CusFeSa. Am. Mineral. 2005, 90, 1256–1264. [CrossRer] Reidy, K.; Varnavides, G.; Thomsen, J.D.; Kumar, A.; Pham, T.; Blackburn, A.M.; Anikeeva, P.; Narang, P.; LeBeau, J.M.; Ross, EM. Direct Imaging, and Electronic Structure Modulation of Moirć Superlattices at the 2D/3D Interface. Nat. Commun. 2021 ...
    ... units of Adria [ Pannonian Basin josnian Flysch Zone Judva-Karsta-Cukali Zone | 0b |Šumadija-Kopaonik Pb-Zn/polymetallic district TOVO SOJ OM i “p | Oligocene-Miocene magmatic and volcanic rocks IE Hqh karst Zone. Dinaric metallogenic province I rirace zone |7 carpatho-Balkanides metallogenic ...

  • Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites

    Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)
    To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...
    Perovskite/spinel ceramics, Multiferroic, Sintering, Influence of synthesis method

  • Uslovi formiranja oticaja reke Crnice

    Andjelija Glogovac (2024)
    Sliv reke Crnice zauzima područje centralnog dela Srbije, između opštine Paraćin na zapadu, Sisevačkog basena na istoku, sliva Ravanice na severu i Jovaničke reke na jugu.Režimski parametri sliva reke,površine od 289 km2 kontrolišu se na hidrološkoj stanici Paraćin, dok su sa ciljem analize režima i uticaja padavina na formiranje oticaja preuzeti podaci o padavinama sa meteorološke stanice Ćuprija.Na razmatranom području dominantnu ulogu ima karsni tip izdani, koga karakteriše nestabilan režim u u pogledu oscilacija izdašnosti i nivoa podzemnih voda ...
    režim voda, autokorelacija, kroskorelacija, bilans voda, klimatske promene, reka Crnica
    ... 80 = 70 = % Š s E 6 40 s 50 S 5 4 ž 30 ž Hi 30 Š 20 20 10 10 ”| 0 O ı ~~ — O D D O D . D D i O VOA 9 ' P 9 9 O 9 O a dt d d dP d de de „ de d” d j9 „P P 9 9 9 P P 9 P P b KO K RAA I V L K K J A I I JČO v O J a ŽŽ h Y hh y Y Ž O a o OL . J ME O 8a KA IOJ Slika 7.1. Hidrogram proticaja ...
    ... proticaj (1/s); F -površina sliva u km?. Srednja godišnja evapotranspiracija E (mm) E=P-h gde su: P —padavine (mm); H - sloj oticaja (mm) Koeficijent oticaja q h y N gde su: h - sloj oticaja (mm); P – padavine (mm). 61 Tabela 8.1. Zbirni pregled elemenata vodnog bilansa sliva reke ...
    ... bilansne jednačine. Ključne reči: režim voda, autokorelacija, kroskorelacija, bilans voda, klimatske promene, reka Crnica. Sadržaj: HRG T/0) p OAAAAAA || 2.OPŠTE KARAKTERISTIKE ISTRAŽNOG PODRUČJA al 3 2.1 Geografski položaj područja ...........aaaaaaaaaaaaa a aaadaaaaaaaaane 3 2.2 Klimatske ...

  • Hidrogeotermalni resursi teritorije grada Beograda

    Ana Vranješ (2012-12-12)
    Republika Srbija je izrazito bogata hidrogeotermalnim resursima. Podzemne vode satemperaturama preko 20oC (pa do 96oC, Vranjska Banja) relativno su dobro iskorišćene.Nasuprot njima, podzemne vode sa temperaturama do 20oC do sada uglavnom nisu bilepredmet istraživanja sa bilo kog aspekta izuzev za potrebe vodosnabdevanja. Razvojemsistema toplotnih pumpi, mogućnosti višenamenskog korišćenja ovih voda značajno suuvećane.Teritorija Beograda odlikuje se značajnim resursima podzemnih voda, pre svega u okvirualuvijalnih peskovito-šljunkovitih naslaga i neogenih tortonsko-sarmatskih krečnjačkihnaslaga. Temperatura ovih voda ne prelazi 25oC. Njihovim zahvatanjem preko istražnoeksploatacionihbunara ...
    geotermalna energija, hidrogeotermalni resursi, hidrogeotermalni sistemi, hidrogeotermalnapotencijalnost, energetska valorizacija, hidrogeološka rejonizacija, grad Beograd
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