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Упит dcterms_subject_txt:Resava catchment area

524 items

  • Prvi nalazi repatih vodozemaca (Urodela) u pleistocenskoj pećinskoj fauni Srbije; još jedna kockica u slagalici

    Dragana Đurić, Katarina Bogićević, Draženko Nenadić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilna fauna pleistocenskih pećina odslikava sastav faune njihove okoline. Najčešće se u njima naleze ostaci krupnih sisara ledenog doba koji su je koristili kao stanište. Uz njih česti su i ostaci drugih sitnih kičmenjaka kao što su sitni sisari, ribe, vodozemci, gmizavci i ptice. Ostaci sitnih kičmenjaka u većini slučajeva u pećinu dospevaju kao plen grabljivica (ptice i sisari) ali je manji broj njih pećinu koristio i kao sklonište ili stanište. U proučavanje fluktuacija pleistocenske klime sve češće se ...
    ... significantly drier environmental conditions. As in Mala Balanica, only one vertebra was found in Mirosava and was probably washed from the surrounding area. However, this newt this time indicates that the cave environment was more xerophytic, probably covered with drier grassy glades and sparse forest ...

  • Application of Expansive Mortars for the Formation of Artificial Screens During Blasting in Urban Areas

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Nikola Simić, Jelena Majstorović (2024)
    During construction of buildings in urban areas, sometimes there is a need to blast solid rock mass in the immediate vicinity of the surrounding buildings. In that case, the aim is not only to increase the efficiency of blasting, but also to reduce harmful effects of ground vibration induced by blasting. At the same time, it is very important to protect the buildings located in the safe zone from the blast site as well as remaining rock mass around ...
    expansive mortar, artificial screens, pressure, rock breaking, building foundation

  • Mineragenija i potencijalnost karbonatnih sirovina rudnog reona Bjelopavlića (Crna Gora)

    Darko M. Božović (2016-09-28)
    Karbonatne sirovine, obzirom na geološku građu Crne Gore predstavljaju jednu od najznačajnijih nemetaličnih mineralnih sirovina. U Crnoj Gori postoje brojna leţišta karbonatnih sirovina (arhitektonsko - građevinskog i tehničko - građevinskog kamena) koja su istraţena ili su u eksploataciji, među kojima rudni reon Bjelopavlića zauzima najznačajnije mjesto.Dosadašnja istraţivanja karbonatnih sirovina na ovom području imala su, međutim, prevashodno uzak istraţivački cilj, utvrđivanje rezervi arhitektonsko - građevinskog i tehničko - građevinskog kamena određenog leţišta, ili preliminarna ispitivanja kvaliteta krečnjaka u njima, sa ...
    karbonatne mineralne sirovine, arhitektonsko - građevinski kamen, tehničko - građevinski kamen, karbonatna punila, rudni reon Bjelopavlića, potencijalnost.
    ... - construction stone) that are explored or are in exploitation phase, including mining area of Bjelopavlici that occupies the most important place. Previous studies of carbonate raw materials in the area had, however, primarily a narrow research objective, establishing reserves of architectu ...
    ... formations in this area and their quality, since it is a high quality, pure limestone with more than 98 % CaCO3 components which as such can be applied in various industries. Based on the evaluation of potentiality of mining region Bjelopavlici, can be concluded that this area belongs to the category ...
    ... Mineragenija i potencijalnost karbonatnih sirovina rudnog reona Bjelopavlića (Crna Gora);Minerageny and potentiality of carbonate raw materials of mining area of Bjelopavlići (Montenegro) Darko M. Božović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Mineragenija ...

  • Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian

    Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)
    slogovi, distribucija rang-preciznost, slovenski jezici

  • Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete

    Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)
    sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacija
    ... concrete substrate was calculated according to the following formula: fu = F A (4) where F was the failure force at pull-off and A was the surface area of the dolly. 2.3.2. Tests of Physical–mechanical Properties of Concrete Samples Consistency–slump test was performed in accordance with standard ...
    ... as the content of waste material increased, the size of the slump decreased significantly. This was due to the porosity and higher specific surface area (Table 1) of the waste material and its ability to retain water, thereby reducing the amount of free water in the concrete mixture, and thus the consistency ...

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... yard 150.000 t 90,000 t Difference (Delta) 100,000 t 180,000 t Thus, statistically speaking, a larger quantity of coal can be stored in the same area if there are fewer piles, because less space is left between piles. The homogenization stacking system always starts so that at least one pile is ...

  • Mine ventilation system planning using genetic algorithms

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...
    coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methods

  • FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... mineral widely used in various industries due to its specific physical and chemical properties, such as cation exchange capacity (CEC), large surface area, high pore volume, high swelling ability, etc. Intercalation of organic complexes into montmorillonite layers changes surface properties from hydrophilic ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... quartz grains are common, mostly in the parts that are rich in stylolites. Platy limestones Grey, platy limestones occur over the entire study area and represent the lower part of the Jasenina Formation (Mi- chalik ef a/., 1990). Light grey and olive-grey, partly silice- 0us, micritic limestones ...
    ... the radiolarites between the Western Tatra Mountains and eastern part ofthe Tatras (the High Tatra and Belianske Tatra Mountains). In the former area the deposits were laid down on submarinc highs, their slopes and in per- ched basins, whereas in the latter one a thick limestone-marl basinal ...
    ... Carpathians. Minera/ia Slovaca, 28: 151—174. Kozur, H., Mock, R. & OžvoldovaA, L., 1996. New biostratigraphic results in the Meliaticum in its type area around Meliata vil- lage (Slovakia) and their tectonic and paleogeographic signif- icance. Geologische Paldontologische Mitteilungen Inns- bruck ...

  • Tektonske i litostratigrafske karakteristike šireg područja Grivske (Zapadna Srbija)

    Nikola Otašević (2024)
    U ovom radu predstavljene su osnovne geološke karakteristike šireg područja Grivske. U litostratigrafskom pogledu na ovom prostoru prisutne su paleozojske, mezozojske i kenozojske sedimentne, magmatske i metamorfne stene. Tvorevine karbona su predstavljene semimeta-morfisanim tvorevinama.Tvorevine trijaske starosti su predstavljene slojevitim i masivnim krečnjacima, dok su tvorevine jure predstavljeni produktima ofiolitskog melanža. Takođe, prisutne su i tvorevine senona koje su predstavljene masivnim krečnjacima. U neogenoj sukcesiji dominiraju klastiti miocena, dok su u kvartaru zastupljeni različiti tipovi fluvijalnih, deluvijalnih i deluvijalno-proluvijalnih tvorevina. ...
    Arilje, grivska formacija, Drina-Ivanjica, tektonska evolucija

  • 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

  • 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 ...
    magnetit, hematit, hemoilmenit, Borska metalogenetska zona, porfirska ležišta
    ... mikroanalize, tačnije: 1) energetsko-disperzivnim spektrometrom (EDS – Energy- Dispersive Spectrometer) firme Oxford Instruments, model X-Max Large Area Analytical Silicon Drift Detector povezanim sa INCAEnergy 350 Microanalysis System; 2) talasno-disperzivnim spektrometrom (WDS – wavelength-dispersive ...
    ... nanometarskih faza, tj. homogenitet na nano-nivou je potvrđen (slika 13c). Tokom ispitivanja upotrebljena je i metoda elektronske difrakcije (Selected Area Electron Diffraction - SAED) (slika 13d,e) kojom je moguće odrediti parametre jedinične ćelije, ali sa manjom preciznošću u odnosu na XPRD metodu ...
    ... Miner. Deposita, 37 (6-7), 541-567. Cioflica, G., Jude, R., Lupulescu, M., Udrescu, C., (1991): The banatitic magmatites of the Lilieci- Liubcova area (Banat). Rev.Roum. Geol., 35, 3-22. Claasen, A. A., (1926): The scattering power of oxygen and iron for X-rays, Proc. Phys. Soc. London 38, 482-487 ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... context. That is why the tools for translation of e-learning courses and translation support are nowadays one of the most important topics in this area. E-learning course translation is a very special service that requires specific subject- matter expertise and high technical skills from everyone involved ...

  • Part of Speech Tagging for Serbian language using Natural Language Toolkit

    Ranka Stanković, Boro Milovanović (2020)
    Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...
    obrada prirodnog jezika, mašinsko učenje, neuronske mreže
    ... Serbian or translated to it. 1984 is a novel by George Orwell, part of MULTEXT-East resources [9]. INTERA (Integrated European language data Repository Area) is a project that produced multilingual corpus on law, health and education [10]. Around the world in 80 days is a novel by Jules Verne annotated ...

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... microemulsion coexists with excess water (2Q ). This system exhibits a strong tendency to form liquid crystals. Its phase diagram shows a large area of liquid crystals (LC) surrounded by microemulsion (regions 10 and 1#*). These results are very similar to those reported for the same system ...

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... USA) as 10 mg ml�1 chloroform solutions and phospha- tidylcholine extracted from hen’s egg yolk.30 The applied detergent used to increase the surface area and decrease the substrate’s surface concentration, deoxycholic acid (DOC), was purchased from Sigma (Taufkirchen, Germany). Matrices for MALDI-TOF ...
    ... USA) as 10 mg ml7! chloroform solutions and phospha- tidylcholine extracted from hen’s egg yolk.°° The applied detergent used to increase the surface area and decrease the substrate’s surface concentration, deoxycholic acid (DOC), was purchased from Sigma (Taufkirchen, Germany). Matrices for MALDI-TOF ...

  • Геохемијске карактеристике флотацијског јаловишта рудника Грот (југоисточна Србија)

    Božidar Đokić (2012-07-16)
    У дисертацији су анализиране геохемијске карактеристике флотацијскогјаловишта које се налази на највишој надморској висини у Србији. Јаловиште јенастало преграђивањем узводно од Селишког потока. Географске, геолошке игеоморфолошке карактеристике области у којима је смештено највећим делом суутицали на његову морфологију и морфометрију. Јаловиште чини велики, јужни ијугоисточни плато и велика брана. Делови јаловишта су засебно испитивани, азатим и њихова међусобна интеракција и утицаји на окружење.Прикупљени узорци су испитивани рендгенском дифракциономанализом, скенирајућом електронском микроскопијом, рендгенскомфлуоресцентном спектрометријом, гранулометријском и хемијском анализом.Рендгенском дифракционом анализом ...
    флотација, јаловиште, скенирајућа електронско-микроскопскаанализа, рендгенска флуоресцентна спектрометрија, Pb-Zn руда,тешки метали, контаминација
    ... of the Seliski stream. Its morphology and morphometry were influenced mainly by the geographical, geological and geomorphological features of the area of its emplacement. The tailing consists of the large, south and southeast plateaus and the large dam. Parts of the tailing were explored separately ...
    ... ns of Fe, Pb, Cu and As are noticed in the eastern parts of the large plateau, which points to the fact that tailing material deposited in this area was abundant in heavy metals. As far as granulometry is concerned, it can be noticed that aleuritic sand, aleurite and sandy aleurite are located ...
    ... (July-September), Zn (October-December) and Hg (April-June). Grot mine flotation tailing represents unique source of contamination for the wider area as well, but in the same time the mine and the flotation represent the only company in which local inhabitants can find employment. Conservation of ...

  • Геохемијске карактеристике флотацијског јаловишта рудника Грот (југоисточна Србија)

    Božidar Đokić (2012-07-16)
    У дисертацији су анализиране геохемијске карактеристике флотацијскогјаловишта које се налази на највишој надморској висини у Србији. Јаловиште јенастало преграђивањем узводно од Селишког потока. Географске, геолошке игеоморфолошке карактеристике области у којима је смештено највећим делом суутицали на његову морфологију и морфометрију. Јаловиште чини велики, јужни ијугоисточни плато и велика брана. Делови јаловишта су засебно испитивани, азатим и њихова међусобна интеракција и утицаји на окружење.Прикупљени узорци су испитивани рендгенском дифракциономанализом, скенирајућом електронском микроскопијом, рендгенскомфлуоресцентном спектрометријом, гранулометријском и хемијском анализом.Рендгенском дифракционом анализом ...
    флотација, јаловиште, скенирајућа електронско-микроскопскаанализа, рендгенска флуоресцентна спектрометрија, Pb-Zn руда,тешки метали, контаминација
    ... of the Seliski stream. Its morphology and morphometry were influenced mainly by the geographical, geological and geomorphological features of the area of its emplacement. The tailing consists of the large, south and southeast plateaus and the large dam. Parts of the tailing were explored separately ...
    ... ns of Fe, Pb, Cu and As are noticed in the eastern parts of the large plateau, which points to the fact that tailing material deposited in this area was abundant in heavy metals. As far as granulometry is concerned, it can be noticed that aleuritic sand, aleurite and sandy aleurite are located ...
    ... (July-September), Zn (October-December) and Hg (April-June). Grot mine flotation tailing represents unique source of contamination for the wider area as well, but in the same time the mine and the flotation represent the only company in which local inhabitants can find employment. Conservation of ...

  • Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije

    Jana S. Stojković (2013-09-25)
    Mineralne vode još od davnina privlače pažnju ljudi i to kako u pogledu istraživanja iproučavanja, tako i u pogledu njihovog iskorišćavanja. Naročito je važno poznavanjesadržaja mikroelemenata u njima, jer su to komponente njihovog hemijskog sastavakoje ih odvajaju od tzv. „običnih“ malomineralizovanih voda.U ovom radu proučavani su odabrani esencijalni mikroelementi (fluor, bor, litijum,kalijum, stroncijum i silicijum), u mineralnim vodama Srbije, pri čemu je analiziranopreko 130 uzoraka mineralnih voda iz različitih geoloških sredina, to jest hidrogeološkihrejona. Cilj ovog istraživanja bio je ...
    esencijalni mikroelementi, faktori migracije, zakonomernosti rasprostranjenja, hidrogeohemijski procesi, multivarijantna statistička analiza, mineralne vode Srbije
    ... M., Gurugnanam, B., Suganya, M. and Vasudevan, S. (2009) “Multivariate Statistical Analysis of Geochemical Data of Groundwater in Veeranam Catchment Area, Tamil Nadu.” Journal Geological Society of India 74, Pp. 573-578. 109. The Commission of the European Communities (2003) Commission Directive ...
    ... anali Balkanskoga poluostrva, pod nazivom „The impact of geology on the migration of fluorides in mineral waters of the Bukulja and Brajkovac pluton area, Serbia“, Papić, Đoković, Stojković, Jović, Marinković i Nikić (2012). Jana S. Stojković Doktorska disertacija 157   4.1. Geološke kara ...
    ... Public Health, by O. Sellinus, et al., Elsevier, Pp. 301-329. 27. Ellis, A. J. and Mahon, W. A. (1966) “Geochemistry of the Ngawha hydrothermal area.” New Zealand J. Science 9. 28. EPA (2008) Drinking Water Health Advisory for Boron. Washington, DC: U.S. Environmental Protection Agency. 29 ...

  • 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
    ... adsorpcije, pojavile su se studije koje su se bavile poblematikom upotrebe MP-a za određivanje KKI i specifične površine (eng. SSA - specific surface area) kod minerala glina (Hang and Brindley, 1970; Yukselen and Kaya, 2008). Međutim primena MP u ove svrhe jos uvek je pod znakom pitanja. Prema prethodnim ...
    ... izmene određene upotrebom amon acetatne metode (AA) i metode zasićenjem rastvorom metilen plavog zajedno sa specifičnom površinom (specific surface area - SSA) prikazane su u tabeli 15. Uzorci koji su pretežno smetkitskog sastava poseduju visoke KKI vrednosti dok oni koji su kaolinitskog sastava poseduju ...
    ... charge. Soil SciSoc Am J. 55: 1569 - 1576 Aringhieri R., Pardini G., Gispert M. and Solé, A. 1992. Testing a simple methylene blue method for surface area estimation in soils. Agrochimica 36(3): 224 - 232 ASTM. 1984. Standard test method for methylene blue index of clay (C 837- 99). In: 1984 Annual ...