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Упит dcterms_subject_txt:Rastvorne soli

524 items

  • Процена емисије гасова са ефектом стаклене баште као последице енергетске активности

    Горана Остојић (2024)
    Рад се бави анализом и проценом емисија гасова са ефектом стаклене баште, са посебним акцентом на емисије које настају као последица енергетских активности. Ефекат стаклене баште представља природни процес који је неопходан за одржавање живота на Земљи, али антропогене активности, попут индустријске производње и сагоревања фосилних горива, значајно повећавају концентрацију ових гасова у атмосфери, што доводи до климатских промена. Рад истражује узроке, последице и могућности за смањење емисија гасова, као и развој стратегија за ублажавање негативних ефеката на животну ...
    емисија гасова, ефекат стаклене баште, енергетске активности, климатске промене, мобилно сагоревање, стационарно сагоревање
    ... CBOTr BHCOKOT cajp:kaja yrJbeHuKa. Kaja ce yraJb caropeBa, ocnoGala BenmKe KonHuHHe CO, Kao H npyre mrTeTHe CyrcTaHTIe, yKJbyuyJyhuM cyMmop-maokcuj (SO>)) H a3oTHe oKcHJe (NOx). 27 Jipouena eMucuje zacosda ca epeKkmoM cmakanene 0aume Kao noceQuue enepoemcke akmuseHocmu OBH TacOBH HC CaMO Ja ...
    ... y TpaHCHOPpTHOM CeKTOpy. CaropeBame Ha(Te ocnmo0aba COp, kao H MerarH (CHa) H Npyra opraHcka HcHMapePa. HadQra rakolje npoM3Bo)H CyMHop-HMoKcHN (SO>) H aaoTHe oKcHe (NOx), kojH Mory MonpHHeTH 3arabeP>y Ba3nyXxa H 3JpaBCTBeHHM rpoOneMuMa. IIopej eMucHja racoBa ca c(DeKTOM cTakKJIeHe Oamrre, e ...
    ... caMO 3a Mepebbe CO> 30o0r BHCOKHX TPOIHIKOBA, aJIH MO)KC ce CIIpoOBecTH aKO Cy MOHHTOPpH Beh HHcTaJmipaHuH 3a Mepebbe HpyruHx aarabaBaua Kao mro cy SO> a NOx. KoHruHyupato rıtpahem• je KOpHCHO 34 CarOpeBabbe uBpCTHX ropHBa rJie Je TeOXe MepHTH IIpOTOK TOpHBa, HJIH Kajia Cy TOpHBa BeOMa BapuHjaOuJHa ...

  • Uniaxial compressive strength test before and after standard fire test on rock mass

    Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)
    ... approximately equal. Testing uniaxial compressive strength of samples (7-12) after standard fire test was not possible because samples cracked so much that they disintegrated even before application of force on the hydraulic press. In Figure 5 samples after standard fire test are shown. ...

  • Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?

    Nikola Stanković, Taras Gerya, Vladica Cvetković, Vesna Cvetkov (2024)

  • Fragmentation Size Prediction of Blasted Material Using a Specialized Software for Drilling and Blasting

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić, Miljan Gomilanović (2024)
    Design and optimizing the drilling and blasting parameters, should fill the requirements for the capacity, fragmentation size, and technical characteristics of loading and transport equipment, and enable a safe work at the open pit. Besides mentioned, it also achieves the minimal impact on the environment of the open pit and decreases the negative effects on the environment, especially in the blast vibration and flyrock. To obtain the best possible blasting effects and consider all the factors, a specialized software is ...
    optimization, O-Pitblast, drilling, blasting, fragmentation size

  • Анализа квантитативног и квалитативног режима подземних вода: Случај изворишта за водоснабдевање Друговца у Смедереву

    Милан Павличић (2024)
    У раду су приказани резултати истражних радова који су спроведени у периоду од 13.04.2018. до 31.05.2019, у циљу дефинисање режима и категоризације резерви подземних вода на изворишту за водоснабдевање Друговца у Смедереву. Бунарима ИЕБДР-1/93 и ИЕБД-1/2002 су каптирани песковити седименати неогене старости. У току режимских осматрања вршени су тестови црпења, осматрања нивоа подземних вода, режимa падавина као и квалитетa подземних вода. Утврђене су укупне резерве подземних вода у количини од 5,3 l/s. Хемијске анализе воде показују да је хидрохемијски ...
    режимска осматрања, тестови црпења, неогени седименти, хидрохемијски режим, извориште
    ... 8 510,3 1994 36,1 | 16,5 | a16,2 | 35,2 | a6,9 | o7,a | io0,6 | 62,6 | 31,9 | 58,3 | 22,2 | 3177 555,3 1995 64,8 | 34,0 | a1,7 | c63,1 | ao,r || so,r | a6,5 || os,8 | og | al |,g | 63,8 621,6 1996 215 | 82,1 | 564 | 45, | c63,5 | i8,5 | ac,o || 52,0 | s7,2 | 23,6 | 56, | o6,2 649,1 1997 29,1 ...
    ... 22, | 51,8 | ı8, | 36,3 | 122,2 | 50,6 || 35,8 | 159,0 | 15,3 | s0,6 | 35,6 760,5 2002 274 | a4, | 23,0 | 78, | 49,6 | io0,8 | c6o,9 | 137,7 | ono | so,2 | 46,8 | 61,7 790,0 2003 35,6 | 45,4 | 30,4 | iog,0 | ı24 | 7P,e | oo,o || 33,6 | 57,3 | s5,0 | o1,7 | 38,4 818,4 2004 692 | 210 | 3,L | 25,8 | ...
    ... 39,4 551,9 2005 44,8 | s0,7 | a42,8 || 53,8 | 724 || ao,a | o || ıa5,4 | ı25,8 | 38,8 | 46, | 58,7 832,4 2006 25,9 | 52,4 | se,g | se,o | 26,3 || so,g | 20,6 | io7,ı | 25,7 | 24,0 | ı7,6 | 78,3 631,6 2007 207 | 24 | 673 | a4,0 | a3,0 | on,2 | oo,0 || c5,0 | sea | 27,4 | a5,0 | 43,4 604,8 2008 ...

  • Automatic construction of a morphological dictionary of multi-word units

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić (2010)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multiwordn units, noun phrases, query expansion
    ... of a hyphen, and in these cases the strategy offers a very similar class. There are also some classes that are related to only one very specific MWU, so we have not even tried to formulate a rule for them, e.g. the class nc 2xn3xn1 for Sao Tome i Principe. However, all super-classes are covered by rules ...
    ... to process in a few months. One impor- tant thing that remains to be done is the addition of semantic and/or domain markers to MWU lemmas, which have so far been systematically added only for proper names following the approach suggested in [14]. We are considering several solutions, including one proposed ...

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... life conditions of the biosphere which could be potentially preserved within the sedi mentary record. Except them, there are also longer period cy- cles so-called “grand cycles” of 400 kyr, and 1.25, 2.35 and 4.6 my (oLSEN, 2001). The effects of these longer period cycles are only potentially noticeable ...
    ... attached to Serbia, where he de- cided to settle down despite much better financial conditions he had in Austria. His determination and love for science was so strong that he managed to achieve important discoveries during challenging times, in the course of two World Wars, and he repre- sents a great role ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... European side of the Vardar zone, the Moesian platform (inset of Fig. 1) did not rotate during the Cenozoic (van Hinsbergen et al. 2008). However, so far no reliable paleomagnetic results were available for the area between these two dif- ferently behaving, relatively rigid areas to constrain pos- ...
    ... lt et al . 2 0 1 5 ). T h e ag e d et er m in at io n w as d o n e b y M il en a D u n či ć b as ed o n w el l p re se rv ed m ic ro fo ss il as so ci at io n s ex ce p t fo r lo ca li ti es 4 an d 8 w h er e th e ag e is fr o m th e B as ic G eo lo g ic al M ap o f fo rm er Y u g o sl av ...
    ... shallow inclinations also occur among the dacitoandesites (e.g. 27 and 32, Fig. 10), which have weak anisotropies (max. 1.05, Lesić et al. 2013). So far we cannot point out a feasible mechanism for the shallow inclinations since bias due to overprinting is unlikely (the demagnetization curves of ...

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... water for 24 h. According to SRPS ISO 5667-10:2007, during sampling, the wastewater is mixed with a solution of nitric acid in order to stabilize it, so the pH of the solution after sampling and before materials testing was ~4.2. For that reason, all experiments related to heavy metals removal were performed ...
    ... literature [47,48] that because of HTC treatment, an amorphous network with a high content of carbon is obtained with increased surface functional properties so it may be said that HTC-obtained carbon containing materials from glucose and fructose do not possess crystal structures. It was of interest to determine ...
    ... activated carbon structure and changes it [60–62]. On the other side, the boiling points of the Li and Na are much higher than activation temperature, so the possibility of their entering into the structure of the activated carbon and chaining is much lower, what may be a reason for maintaining morphological ...

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... ������� Abstract: Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very ...
    ... updates Abstract: Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very ...

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... algorithms mimic the natural evolution process. Namely, they optimize a “population” through several “generations” by changing adaptable parameters so that the population fits best an accepted criterion function. Thus, the initial weights of the NN were determined by the genetic algorithm on basis ...

  • Definisanje strukturnih odnosa primenom postupka horizontalni gradijent

    Snežana Ignjatović, Ivana Vasiljević, Natalija Jovanović (2019)
    Različiti postupci matematičkih transformacija se mogu primeniti na gravimetrijskim i magne tometrijskim podacima, kako bi se na istražnom terenu definisali strukturno-tektonski odnosi. U radu su prikazani rezultati dobijeni korišćenjem postupka horizontalni gradijent i ukupni horizontalni gradijent na gravimetrisjkim podacima. Navedeni postupci su pomogli da se detektuju kontakti sa velikim padnim uglom (vertikalni ili subvertikalni kontakti), koji se mogu interpretirati kao rasedi. Za test područije uzet je istražni prostor koji se nalazi na jugoistoku Srbije u okolini Vranjskog basena. Položaji ...
    gravimetrijski podaci, matematičke transformacije, rased, Vranjski basen
    ... Kitson House Elmete Hall Leeds, UK, 2007. [8] Marović M, Toljić M, Rundić Lj, Milivojević J, Neo- alpine Tectonics of Serbia, Serbian Geological So- ciety, Beograd, 2001. SUMMARY THE APPLICATION OF HORIZONTAL GRADIENT FOR DEFINING STRUCTURAL CORRELATION The different methods of mathematical ...

  • Анализа режима истицања карстног врела Горњи Душник (Сува планина)

    Александар Танасковић (2024)
    Карстно врело Горњи Душник налази се у истоименом селу у југоисточној Србији, у општини Гаџин Хан. Врело је узлазног типа и дренира западне делове Суве планине.Каптирано је за потребе водоснабдевања Гаџиног Хана, као и села Горњи и Доњи Душник.Током 2023. и 2024. године спроведена су хидрогеолошка истраживања, са циљем дефинисања режима и биланса подземних вода врела Горњи Душник. У ту сврху, коришћени су подаци из два осматрачка периода.Прва осматрања режима истицања је вршио Геозавод, од 1.11.1977. до 31.01.1979. године.Затим су ...
    карстно врело, режим истицања, аутокорелација, кроскорелација, рецесиона анализа
    ... 1 689 | 133.9 54.9 90.9 85.9 37 14.4 | 117.2 6.7 17.1 94.5 1979 71.3 Pa 53.7 | 68.9| 133.9| 54.9| 90.9| 859)| 37.q0| 144| 117.2 67 | 454| 92.2| SOLI Ta6ena 3.5: Cpe0we Meceune u cpe0bbe eoluutba cyMa na0asuHa ocMompeHux Ha Mem. Cm. ba6yunuua 3a nepuoo oo 1.1.2018. 0o 30.06.2019. zo0une Jan ...
    ... B v i H a ( m m ) o o o 400 200 0 o wocmwnoOomwomwoOomw_Oo w e or” w o oSDaoO0oeooOo == o oO O DO DO Oo ”6e eeoo = e'eeecroeSeo=So = GQ,QQ,G<&Q Cmaka 1.12: T ommmbe cyMe najtaBHHa ca TpcH/IOM IIDpOMCHe CyMe Iajl{aBHHa 32 KHIIOMEpHy craHumy Baoymnuma To nu wu iW be cy Me ...
    ... Đulj5 ''Aoyxsed eyeuzo ulupiepue)s epueBe~ eoiuipal ulueunuey epueBe~ d •yč < — uĐUJey AOJOX 000SC ·} 8 - V IIJoudd D/SO|O9S) [uuuuu] g Bojud JOAZI |U|E}S · ĐepoA utluuiezpod oOAlu uol|Ae}sSod}ead Z eyeuzo ulyso|/o95ouplu epue694 tuBpz! dii ...

  • Using Metadata For Content Indexing Within An OER Network

    Ranka Stanković, Olivera Kitanović, Ivan Obradović, Roberto Linzalone, Giovanni Schiuma, Daniela Carlucci (2014)
    ... compare learning materials that best suit their current needs more efficiently. OER or the related metadata standards are often stored in the so called Learning Object Repositories (LOR). Different LORs address different needs and therefore have different metadata schemas. Chan & Zeng emphasize ...
    ... find and compare learning materials that best suit their current needs more efficiently. OER or the related metadata standards are often stored in the so called Learning Object Repositories (LOR). Different LORs address different needs and therefore have different metadata schemas. Chan & Zeng emphasize ...

  • 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

  • Two approaches to compilation of bilingual multi-word terminology lists from lexical resources

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2020)
    In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...
    Linguistics and Language,Software,Artificial Intelligence,Language and Linguistics