Претрага
615 items
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BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations
Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina. "BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations" in 17th International Conference of the open and underwater mining of minerals, Sts. Constantine and Helena Resort, Varna, 18-22 September, Bulgaria, Sofia, Bulgaria : Scientific and Technical Union of Mining, Geology and Metallurgy, (2023)
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Израда хидрогеолошких објеката за потребе захватања подземних вода из алувијона Саве на локацији Мајур (Шабац)
Лука Обрадовић (2024)За потребе формирања изворишта за водоснабдевање фабрике у селу Мајур (град Шабац) технолошком, техничком, санитарном и водом за потребе противпожарне заштите,спроведена су примењена хидрогеолошка истраживања која су обухватила израду две истражне бушотине ЗКИБ-1 и ЗКИБ-2 ,директном методом бушења, са уградњом пијезометарске конструкције и израду једног истражно-експлоатационог бунара. Бунар је израђен реверсном методом бушења уз примену чисте воде као радног флуида.Пројектовани бунар је дубине 30 метара чији капацитет износи 32,67 l/s. Захвата подземне воде формиране у овкиру алувијаних слојева реке ...... IIpBa cHcTeMaTcKa recojimomiKa HcTpaxXHBaMba Ha OBOM TOJIipyujy 3anoueTa cy KpajeM 19. BeKa H OJL TaHa Cy CC HCHPpeKHJHO HacTaBJbama, mpHmaroDaBajyhH Cc HOBHM MeTOJIOJIOrHJaMa H HayuHHM Ca3HaMbHMa. Kpaj 19. BeKa H noueTak 20. BeKka • 1890. romiHa: Jypamuh nerajbHo aHanuyupa rnnurKe OyHape ...
... yKynHe nyx)xkHMHc 19 Merapa, op +1,0 no 18,0 Merapa. 62 IInjeaoMerap II-2: • „TanoOx)KHHK JUy)KHMHC l MeTap y HHTepBa:ijyy oJ 21,0 no 22,0 erapa; • „(OnrTepcKa KOHCTpyKHJa, CJIOTHpaHa Ca CHTOM H HaBOJeM, JUy)KHHC 3 MeTpa on 18,0 no 21,0 erapa; • IHIyHa meB yKynHe nyx)xkHMHc 19 Merapa, op +1 ...
... 21,8 22,5 48 13, 37 -33 11,4 2002 -I,I 6,3 837 1, 188 21,2 22, 21,3 6,1 12 9,2 0,8 · 12,3 2003 · -1l,ć -3,8 5,7 1l,1 20,1 23,5 22 23,5 63 9,9 7,4 19 11,3 2004 · -14 2,2 6,2 2, 152 19,5 21,6 20,7 154 13, · 6, 27 112 2005 0 29 44 1I 69 192 21,5 19,7 73 116 4,9 2, 10,5 2006 -l,4 0,9 5,6 2, 164 ...Лука Обрадовић. Израда хидрогеолошких објеката за потребе захватања подземних вода из алувијона Саве на локацији Мајур (Шабац), 2024
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A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian
Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...... godina (eng. year), problem (eng. problem), pitanje (eng. question), etc. Word korona appears among the top 15 words, which is due to the current Covid-19 pandemic. We assumed that our data set might be biased considering the period of data capturing and that proved to be true. In the non-abusive set ...
... Измењено: 2023-10-14 04:19:42 A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] A Twitter Corpus ...
... 30]. Hate speech and flames are present in Serbian media and public discourse especially towards the LGBT population, Roma people, women and migrants [19]. Hate speech has become a major problem for all types of online platforms where an increasing amount of user-generated content appears: from comments ...Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih. "A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian" in 3rd Conference on Language, Data and Knowledge (LDK 2021), MDPI AG (2021). https://doi.org/10.4230/OASIcs.LDK.2021.13
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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)... concentra- tions exceed drinking water standards. Arsenic concentra- tions vary from 50 to 100 µg/L, with some municipalities recording up to 250 µg/L [19]. The aim of our study was to report current distribution of arsenic in drinking water from the public water supply system in the South Pannonian Basin ...
... below 10 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 ...
... [µg/L] As [µg/L] As [µg/L] to a depth of 250 m, which meet drinking water standards. Depths below 250 m exhibited elevated total mineralization [19]. Arsenic Risk Assessment by the Drinking Water Pathway The end result of the assessment of groundwaters used for drinking water supply in the South ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
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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... ues for Drenjak locality, the mean of four measurements, are: a = 5.744(8) A,b= 5.678(55) A, c=5.774(03) A, and P = 112.05(65)”. As reported in [19], the changes in the position of the (131) peak are a sensitive indicator of arsenopyrite composition. The (131) peak does not interfere with other ...
... line as the ratio standard element and line [20]. The calculated composition, mean of 16 spot analyses, was determined as (wt%): Fe 34, As 47, S 19 (sum 100); (at%): Fe 33.2, As 34.2, S 32.6; i.e., stoichiometric composition. The selected-area electron diffraction (SAED) pattern, recorded in the ...
... measured unit cell parameters for arsenopyrite. Ref. a[A] bIA] cIA] [:502] V[A3] Symmetry S.G. [5] 9.51 5.65 6.42 90.0 344.956 monoclinic B2i/d [19] 5.744 5.675 5.785 112.28 174.496 triclinic P-1 [10] 5.741 5.649 5.756 110.588 174.750 monoclinic P2,/c [9] 5.7612 5.6841 5.7674 111.721 175.456 ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
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Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate
Ivana Božović (2024)Diplomski rad sa temom „Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate” sastoji se iz dva dijela, opšteg i eksperimentalnog. U opštem dijelu prikazani su: * Istorijski razvoj rudnika „Grot”; * Geografski položaj rudnika „Grot”; * Geološke karakteristike ležišta; * Mineralni sastav i strukturno-teksturne karakteristike; * Prikaz postupaka pripreme mineralnih sirovina koji se primjenjuje u pogonu; * Opis šeme procesa; U drugom dijelu ovog završnog rada prikazani su rezultati eksperimentalnih ispitivanja koja su obuhvatila: uzorak, mineralnu sirovinu, hemijske analize i tehnološka ispitivanja. Na kraju ovog rada dati ...... spiralni klasifikator (19) a odsev sita u mlin sa kuglama (18). Samlevena ruda iz mlina sa kuglama, (18), gravitacijski odlazi na klasiranje u spiralni klasifikator (19). Pjesak spiralnog klasifikatora vraća se na domeljavanje u mlin sa kuglama (18). Preliv spiralnog klasifikatora (19), odlazi u pumpu ...
... Fax: (381 11) 3235-539 DIPLOMSKI RAD Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate Kandidat : Mentor: Ivana Božović, R59/19 Prof. Dr Predrag Lazić Rudarsko-geološki fakultet, Univerzitet u Beogradu Mentor : Prof. Dr Predrag Lazić Komisija za odbranu : Prof. Dr Predrag ...
... postrojenja, flotacija, uprava, magacini, rudničko nasclje) pripadaju opštini Vranjska banja. Od Bosilegrada je udaljeno u pravcu sever-severozapada 19 km, a od Vranja u pravcu istoka 28 km (vazdušnom linijom). Slika 2.. Pregledna geografsko-saobraćajna karta šireg područje rudnog polja „Grot“ ...Ivana Božović. Uticaj finoće mlevenja rude rudnika Grot na tehnološke rezultate, 2024
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Опасности и штетности код производње текстилних компоненти за моторна возила
Мара Павловић (2024)Рад се заснива на препознавању опасности и штетности којим су изложени запослени у једном привредном друштву чија је делатност производња звучне и топлотне изолација и заштите од вибрација за моторна возила. Ради истраживања и реализације постављених циљева, завршни рад је структуиран у три целине. У првом делу рада описан је технолошки процес и карактеристике материјала при производњи изолационих материјала од текстилног отпада и производњи полиуретанске пене. У оквиру другог дела описане су опасности и штетности којим су изложени запослени при обављању својих ...... KOJI IPOMH3BOJIE TEKCTHJIHHX KOMIIOHEHTH J3A MOTOPHA BO3MJIA KanıujtaT: Menrop: BananaMup MuazncaBJbeBuh Mapa IHan.atonuh Bpoj uaHteKca P38/19 Beorpa/jn, cenreM0ap, 2024. rojn. KoMucnja: 1. BnaniMHp MuznuicaBJbeBHh ripo(b.J_ip, MeEHTOp Pynapcko-reo:moniku (akyanrer, Beorpa/n 2. A ...
... NpejcTaBJba HeOHacaH oTMmaj Koju je y cKmamy ca IIpaBMIHHMKOM O KaTeropHjaMa, HCHMHTHBaMDy H Knacnčpm(aunjn orTmajna („Cn. rmacaak PC“, op. 56/10, 93/19 a 39/21), paappcrauH y: TEeKCTHJ — OTHajH OJ MeXaHHuKOT TpeTMaHa OTIaJa (HHID. copTHpaMa, JpoOJbeĐa, KOMNaKTHpaĐba H HajeTH3OBaPba), KOJH HHcy Jpyrauuje ...
... KOJIMIMMA HJ pyuHHX IHaHcTHHMM BHJbyIIKapHMa TpaHCIOpTy]Jy y HIOrOH ca rIipecaMa 34 OOJTHKOBabMbe IIpOH3BOJla (crHKe 17-25). Cmaka 18: IIpeca Cnmaka 19: IIpeca 13 g Cnuka 20: IIpeca Cymia 25: IIpeca Cmaka 24: IIpeca 14 'Y aaBHCHOCTH OJL HaMCHe, IIDOH3BOJI ce y IIpecaMa O0ujkyje H ceue (caKe ...Мара Павловић. Опасности и штетности код производње текстилних компоненти за моторна возила, 2024
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Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)
Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...... sion, at a depth of about 155 m (KNEŽEVIĆ, 1989 – see Fig. 19). Besides, it was discovered that similar Pontian sediments were deposited over the palaeorelief of Jurassic and Cretaceous rocks in the area of Pinosava, e.g. borehole KGK-15 (Fig. 19). At bore- hole KGK-13 near Resnik (187 m a.s.l) these ...
... the at the top of core, up to 6.5 m of poorly cemented loess-like sediments constitute the last stratigraphic unit. 4.2.2. Borehole BT1-3 (N 44°43′19″, E 20°34′36″) The second borehole, drilled in the vicinity of BT1-2 (Fig. 1), reached the ?Lower Miocene reddish series at a depth of 47 m (the Bučvar ...
... sediments (e.g. Bučvar clastites) are present over larger areas than previously known (clastites are found in the vicinity of Leštane and Resnik, see Fig. 19). In this study, however, there is insufficient information about the sedimentary conditions in which they were formed, especially since these deposits ...Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić. "Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)" in Geologia Croatica (2019). https://doi.org/10.4154/gc.2019.11
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The Late Devonian contraction along the Precaspian Basin north margin: Transpressional range building in the intracratonic domain
Novak Novčić, Marinko Toljić (2023)The evolution of intraplate sedimentary basins located in the vicinity of an active convergent plate boundary is often controlled by the collisional dynamics of the adjacent orogen. The transfer of compression from the orogen to the platform's interior results in the formation of complex structural geometry and kinematics that often reactivate older crustal faults, focus far-field stresses and control the evolution of associated sedimentary basins. One place where this localisation can be optimally understood is the Precaspian Basin, situated ...Intrakratonske deformacije, transpresija, kosa kompresija, krustalni rasedi, intrakratonski transfer stresa, kontrakcioni blokoviNovak Novčić, Marinko Toljić. "The Late Devonian contraction along the Precaspian Basin north margin: Transpressional range building in the intracratonic domain" in Global and Planetary Change, Elsevier BV (2023). https://doi.org/10.1016/j.gloplacha.2023.104056
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A necessary and sufficient condition for an algebraic integer to be a Salem number
Dragan Stankov (2019)We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "A necessary and sufficient condition for an algebraic integer to be a Salem number" in Journal de theorie des nombres de Bordeaux (2019). https://doi.org/10.5802/jtnb.1076
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Linear-motor plunger pump increases lifting efficiency
Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev. "Linear-motor plunger pump increases lifting efficiency" in Oil & Gas Journal (2022)
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Formative evaluation of e-learning projects with the logical framework approach
... project is played by the Evaluation Model (EM). EMs are approaches that assist evaluators in designing and carrying out useful, effective evaluations [19]. The terms approach and model, referred to evaluation are often used in an alternative way, although there are some differences in meaning. Evaluation ...
... [18] Jereb, E., Šmitek, B., Applying multimedia instruction in e-learning, Innovations in Education & Teaching International, 43(1), 2006. [19] Stufflebeam D.L., Shinkfield A.J., Evaluation Theory, Models, and Applications, Jossey-Bass, San Francisco, CA, 2007. [20] Stufflebeam D.L., New ...
... Francisco, CA, 2001. [21] Linzalone R., Schiuma G., A critical review of Program and Project evaluation models, Measuring Business Excellence, Vol. 19, Issue 3, pp. 90-99, 2015. [22] Dyehouse M., Bennett D., Harbor J., Childress A., Dark M., A comparison of linear and systems thinking approaches ...Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković. "Formative evaluation of e-learning projects with the logical framework approach" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade Metropolitan Univesity (2015)
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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, ...... REU TipoceK 1991 ~ -O,6 -1 7,7 97 | 12,1 19,8 - 20,8 19 167 107 69 -2,3 10,0 1992 - -2,2 - 1,1 5, 11,. 14,9 #5185 203 24,1 163 127 64 [3] 10,8 1993 - -1,5 - -2,1 3,9 11 16, 19, 21, 224 17 13 » 2,3 3,2 10,6 1994 2,9 2,1 8,5 124 167 19 22 22 209 »11,2 6,4 1,3 12,1 1995 ~ -O0,7 - 5,2 5, 10 ...
... a aanaiNonı 17 3. Geološke karakteristike istražnog područja ......caaaaaaaaaaaa a aaanaaaaaaaaeaaaoaNe 19 3.1. Pregled dosadašnjih geoloških istraživanja ...........aaaa a nanananatattı 19 3.2. Opis litostratigrafskih jedinica.................a a aaaaaaaaaaeaaaaaitttt 21 3.3. Tektonske kara ...
... 124 2002 18 53x « 14 7 16c 23 #2,2 29 „3 6 21 19 22 &89 2 93 2003 1, 49,0 07 9,0 O, 10,0 1,7 89,0 „3 260 0O,5 12,0 2,4 98,0 2,4 100 2004 14 53 w=R13 4 1,2 17 2, 86 „ 2 2, 9 2,6 105 2,5 115 2005 15 3 28 4 2, 15 2,4 00 9 21 10 27 90 22 95 2006 19 33 29 15 2,2 16 ?Ž2Q, 52 „5 2,3 14 32 69 2, 112 ...Kristina Gavrilović. Definisanje specifičnih uslova dreniranja podzemnih voda na karstnim vrelima Krupac 1 i 2, 2024
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Specifičnosti izgradnje deonice 3 brze saobraćajnice Požarevac-Golubac na organskom tlu
Vojislav Lučić (2024)U ovom završnom radu prikazani su podaci koji se odnose na metode ojačanja terena izgrađenog od slabonosivog organskog tla, kao i njegove geotehničke karakteristike na primeru šireg istražnog prostora, u okolini sela Kumane duž trase treće dionice brze saobraćajnice Požarevac-Golubac. U radu su prvo prikazane osnovne karakteristike i podele organskog tla i treseta, zatim su navedene metode ojačanja tla koje mogu da se koriste na datom istražnom prostoru i na kraju je izvršena analiza i interpretacija rezultata geotehničkih istraživanja ...organsko tlo, treset, metode ojačanja slabonosivog tla, slieganje, konsolidacija i vremenski tok konsolidacije... |WaterTable loporovits Mohr- I alma boj B, 0 — | s5 |waterTable f - — — — — x Slika 19 – Kritična klizna površina i faktor sigurnosti dobijen metodom Spencera 45 KOMENTAR: Na slikama 18 i 19 su prikazani rezultati ispitivanja metoda Bishopa ı Spencera, gdje se vidi da će kosine nasipa ...
... aaaa a 16 4.6. Stubovi ispod geosintetički ojačanih nasipa ...........aaaaaaaaaaaanaaacannnne 17 5. OSNOVNE KARAKTERISTIKE TRASE DIONICE 3 ... ..19 5.1. Obim izvedenih istraživanja..........aaaaaaaaaa a aaaanataataaaani 20 5.1.1. Analiza postojeće geološko-geotehničke dokumentacije.......... ...
... prosječne dubine rasprostiranja 3.5-4.5 m (lokalno se kreće do 9 m). Slika 9 – Satelitski prikaz trase dionice 3 Brze saobraćajnice Požarevac-Golubac 19 Za potrebe geotehničkog projektovanja brze saobraćajnice vršena su brojna ispitivanja terena, sa ciljem definisanja geotehničkih uslova izgradnje ...Vojislav Lučić. Specifičnosti izgradnje deonice 3 brze saobraćajnice Požarevac-Golubac na organskom tlu, 2024
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Analiza primenjenih metoda za transport parafinske nafte
Dunja Milojević (2024)Sadržaj parafina u nafti ima dominantan uticaj na svojstva parafinskih nafti. Taloženje parafina, odnosno taloženje čvrstih čestica parafinskog voska, predstavlja ozbiljan globalni problem tokom proizvodnje i transporta sirove nafte. Samo taloženje voska zavisi od termodinamičkih faktora, poput temperature, pritiska i sastava nafte. Transport nafte cevovodima je uobičajeni proces transporta u naftnoj industriji. Kada prilikom cevovodnog transporta parafinske sirove nafte, dođe do prekida protoka i hlađenja nafte ispod temperature stinjavanja, parafini će kristalisati, pri čemu će doći do, geliranja celokupne transportovane ...... mm. Kod naftovoda prečnika101-127 mm potrebna je jedna grejna cev 19 mm. Za naftovod prečnika 152 mm potrebna je jedna grejna cev prečnika 19-25,4 mm, dok kod naftovoda 200 mm treba instalirati dva grejna cevovoda prečnika 19 mm. -Naftovod -Nafta -Voda Slika 6.4 — Tehnička rešenja kontinualnog ...
... KOJIMA SU ONI IZLOŽENI ........... 16 5. METODE UKLANJANJA PARAFINSKOG VOSKA aR 18 5.1. Mehaničke metode ........aaaaaaa a aaaaeanaaaaeaaaaaakakavi 19 5.2. Termičke metode .........aaaaaa a aananaaaaaaaaaaaaaaaatakave 20 5.3. Hemijske metode ......aaaaaaaaa a aaaaaaaaaaaaaaaaaatakavi 21 5.4. ...
... (Prstojević, Priprema nafte, gasa i ležišnih voda, 2012) Većina parafina pronađenih u naftama nalazi se u rasponu od C,yg — Ces (Stubsjgen, 2013, str. 19) Tačka ključanja parafinskih ugljovodonika raste sa porastom molekularne mase, tako da parafinski ugljovodonici višeg reda imaju višu tačku ključanja ...Dunja Milojević. Analiza primenjenih metoda za transport parafinske nafte, 2024
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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)... concentra- tions exceed drinking water standards. Arsenic concentra- tions vary from 50 to 100 µg/L, with some municipalities recording up to 250 µg/L [19]. The aim of our study was to report current distribution of arsenic in drinking water from the public water supply system in the South Pannonian Basin ...
... below 10 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 ...
... u th o r C o p y • to a depth of 250 m, which meet drinking water standards. Depths below 250 m exhibited elevated total mineralization [19]. Arsenic Risk Assessment by the Drinking Water Pathway The end result of the assessment of groundwaters used for drinking water supply in the South ...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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Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes
Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...... Serbia a r t i c l e i n f o Article history: Received 29 July 2011 Received in revised form 28 October 2011 Accepted 9 November 2011 Available online 19 November 2011 Keywords: Pd(II) Substitution Kinetics Mechanism Reactivity a b s t r a c t Substitution reactions of the monofunctional complexes ...
... trans- [PdX2(isn)2], where X = Cl�, N3 �, SCN� or NCO� and isn = isonicoti- namide have very small anticancer but significant antituberculous activity [19] while complexes with amino alcohols, such as L-pro- linol, L-valinol, L-isoleucinol show certain antitumor activity [20]. As a part of our interest ...
... ARTICLE INFO ABSTRACT Article history: Received 29 July 2011 Received in revised form 28 October 2011 Accepted 9 November 2011 Available online 19 November 2011 Substitution reactions of the monofunctional complexes [(TL®")PdCl]* and [Pd(tpdm)Cl]*, where TL" = 2, 6-bis[(1,3-di-tert-butylimidaz ...Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić. "Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes" in Inorganica Chimica Acta, Elsevier BV (2011). https://doi.org/10.1016/j.ica.2011.11.031
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New data from the Lower Cretaceous carbonate platform deposits of Dimitrovgrad section (Southeastern Serbia)
... Измењено: 2023-10-14 04:22:19 New data from the Lower Cretaceous carbonate platform deposits of Dimitrovgrad section (Southeastern Serbia) Jelena Stefanović, Bojana Džinić, Giovanna Della Porta, Dejan Radivojević Дигитални репозиторијум Рударско-геолошког факултета ...Jelena Stefanović, Bojana Džinić, Giovanna Della Porta, Dejan Radivojević. "New data from the Lower Cretaceous carbonate platform deposits of Dimitrovgrad section (Southeastern Serbia)" in 90° Congresso della Società Geologica Italiana, Trieste, 14-16 septembar, 2021, Società Geologica Italiana (2021)
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Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu. "Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08910-x
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)