Претрага
1705 items
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Минерагенија зеолитских туфова Србије
Vladan Kašić (2018-02-05)Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...... 1 6.614 6.550 0 0 1 5.220 5.226 -3 1 1 7.857 7.834 1 1 1 5.091 5.089 -1 3 1 4.649 4.648 1 3 1 3.971 3.965 3 3 0 3.941 3.942 2 4 0 3.897 3.901 -2 2 2 3.415 3.414 -4 0 2 3.377 3.381 1 5 1 2.974 2.977 3 5 0 2.961 2.961 1 1 2 2.939 2.941 ...
... органозеолита OZ-2, OZ-5, i OZ-10) су припремљена за испитивања. То су зеолит са 20, 50 и 100 mmol/100g ODMBA (дуголанчани органски катјон–окта- децилдиметил бензил аммонијум-јон). Механизам сорпције зеараленона је испитиван кроз одређивање адсорпционих изотерми на pH 3, 7 и 9. Адсорпција ZEN ...
... 3; -8+4; -5+2.5; -5+1; -2.5+1 За голф терене -0.84+0.25 3. Третман ваздуха Филтрација Уклањање нечистоћа 4. Индустрија -8+5; -4+2,5; -2.5+1; -1+0.5; -0.5+0.2 Бетон и пуцолан за цемент 5. Други производи Заштита -8+5; -4+2.5; ...Vladan Kašić. "Минерагенија зеолитских туфова Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-05)
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Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude
Ivana M. Jovanović (2016-01-13)U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže... sistem 5 + + + ESM Takagi-Sugeno sistem 5 + + + PMM Mamdani sistem 3 + + + PSM Takagi-Sugeno sistem 3 + + + ANF1 ANFIS 3 + ANF2 ANFIS 3 + ANF3 ANFIS 3 + VNM1 Veštačke neuronske mreže 5 + VNM2 Veštačke neuronske mreže 5 + VNM3 Veštačke neuronske mreže 5 + ...
... [Hu et al. (2013)]. a) b) c) Iskorišćenje K v a li te t 3 ćelije 5 ćelija 6 ćelija 7 ćelija 8 ćelija 4 ćelije Slika 28. Rezultati optimizacije konfiguracije flotacijskog ciklusa: (a) optimalna konfiguracija za ciklus od 3 ćelije; (b) optimalna konfiguracija za ciklus od 4–8 ćelija; ...
... performansi mreže. 3) Definisanje arhitekture mreže. Mnogi autori klasifikuju veštačke neuronske mreže u dva osnovna tipa. To su: neuronske mreže sa „feedforward” pristupom4, kao što je, na primer, višeslojni perceptron, čiji je pojednostavljeni prikaz dat na slici 5; rekurentne mreže ...Ivana M. Jovanović. "Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-01-13)
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... BAJIĆ & DUŠAN POLOMČIĆ104 tem is comprised of 12 wells, whose capacity is 40 l/s each. The time needed to lower the water table to below the design elevation and allow for the construction work to proceed is 5 days. • Alternative 2 (A2): Long-term average maximum stages of the canals within the study ...
... matrix was produced by evaluating the criteria according to the fuzzified scale (TOLGA 2005): Using a specially developed application, according to Step 2, the calculated values of the fuzzy synthetic extent were as follows: According to Step 3, the fuzzy numbers were com- pared and the degree of p ...
... intersection at point C between the membership functions To compare the triangular fuzzy numbers M1 and M2, both values, V(M1 ≥ M2) and V(M2 ≥ M1) are needed. Fig. 3. Triangular fuzzy number. The degree of possibility of a convex fuzzy number to be greater than k, the convex fuzzy numbers Mi can be defined ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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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 ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Geološko-geofizički model dela Timočkog magmatskog kompleksa
Snežana M. Ignjatović (2014-06-30)Timočki magmatski kompleks (TMK) u geotektonskom smislu pripada KarpatoBalkanidimaistočne Srbije, koji su deo Tekijsko-Dakijske jedinice. TMK je nastaotokom kontinuirane vulkanske aktivnosti, koja je trajala oko deset miliona godina iodvijala se generalno u tri faze (Zimmerman et al., 2008, Kolb et al., 2013, Banješević,2006). Pomeranje vulkanskog fronta je išlo od istoka ka zapadu (von Quadt et al., 2002,2003, 2007). Ovaj kompleks pripada tetijskom evroazijskom metalogenetskom pojasu usvetu poznat po ležištima bakra i zlata (Janković, 1990).U doktorskoj disertaciji su prikazani rezultati ...Timočki magmatski kompleks, aeromagnetska istraživanja, gravimetrijskaistraživanja, 2D geološko-geofizički model, Valja Strž, magmatsko telo... part of the TMC, correspond to Senonian volcanics. These bodies are much more widespread in depth than they are exposed on the surface. Beneath the surface there are two separate subsurface regions of these rocks, each around 2.5-3 km in width and in some parts over 5 km. The results of the model ...
... tačke, 2. koordinate tačke (u Gaus-Krigerovom koordinatnom sistemu), 3. nadmorsku visinu tačke (h), 4. merenu vrednost gravitacionog ubrzanja (gm), 5. vrednost topografske popravke, koja je računata za gustinu od 2 g/cm 3 (Δgt) i 6. vrednost normanog polja, računatu po formuli Kasinisa iz 1930 ...
... gravitacionog ubrzanja (10 -5 m/s 2 ), od koje je oduzeto 980000, g0 – normalna vrednost gravitacionog ubrzanja (10 -5 m/s 2 ), od koje je oduzeto 980000, a koja je računata po formuli Kasinisa, Δgt – popravka za uticaj reljefa (topografska popravka) za gustinu 2 g/cm 3 , ΔgB – Bugeova anomalija ...Snežana M. Ignjatović. "Geološko-geofizički model dela Timočkog magmatskog kompleksa" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-06-30)
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Енергетска безбедност Европске уније у светлу актуелне енергетске транзиције
Бобан Павловић, Дејан Ивезић (2021)Енергетска стратегија Европске уније, која од 2015. године обухвата и циљеве у области климатских промена, тежи изградњи „енергетске уније” која потрошачима из ЕУ даје сигурну, приступачну, чисту и одрживу енергију. Енергетска политика ЕУ поставља пред себе амбициозне циљеве у погледу коришћења обновљивих извора – учешће од 32% до 2030. године. Овако опсежну и динамичну енергетску транзицију у Европи усложњава хетерогеност националних енергетских система у погледу структуре енергетског микса, нивоа увозне зависности, као и нивоа технолошког, друштвеног и економског ...енергетска безбедност, Европска унија, енергетски показатељи, природни гас, обновљиви извори енергије... увоза). Слика 3 приказује највеће извознике нафте и природног гаса у ЕУ. Нафта Природни гас Слика 3. Највећи извозници нафте и гаса у ЕУ [21] 33 Код увоза природног гаса посебно је изражена зависност од једног извора снабдевања, а то је Русија ...
... енергетске безбедности тражи се у формирању јединственог европског енергетског система, усклађивању националних политика и отклањању тржишних препрека [3]. У том смислу, законодавство ЕУ последњих година убрзано ради на отклањању баријера између националних енергетских система. Са циљем непрекидне испоруке ...
... енергетских ресурса и способност привреде да искористи те ресурсе и задовољи потражњу за енергијом. 30 2. Приуштивост − обухвата економске аспекте који подразумевају стабилност цена, ликвидност тржишта, степен увозне зависности. 3. Прихватљивост − односи се на друштвени и еколошки аспект ...Бобан Павловић, Дејан Ивезић. "Енергетска безбедност Европске уније у светлу актуелне енергетске транзиције" in Безбедносни форум, Евроазијски безбедносни форум, Београд (2021)
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Resource-based WordNet Augmentation and Enrichment
In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...... s was measured by Levenshtein distance (LD). As to the number of corrections during post-editing, it was found that 21% of automatic definitions did not have corrections, 12% had correction up to 5 characters, 17% up to 10, etc. It is thus safe to say that for approximately half of the definitions ...
... 834 synsets (9%) by 2, in 682 for (3%) by 3 literals, whereas an even greater difference in the number of literals was found in the remaining 507 (3%) synsets. For the 11,091 synsets with same number of literals in English and Serbian the distribution according to the number of literals was as follows: ...
... during post-editing phase 5. Concluding remarks and future work In this paper we presented an approach to speed up WordNet enlargement using bilingual resources and machine translation APIs. PWN synset definitions from a selected set of non-adjusted PWN synsets were translated to Serbian using Google API ...Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev. "Resource-based WordNet Augmentation and Enrichment" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018)
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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15
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Using technology for knowledge transfer between academia and enterprises
Ivan Obradović, Ranka Stanković (2014)... access to the various OER within the nodes. Section 2 of this paper outlines the main goals to be achieved by the proposed approach, whereas the main features of the platform are given in Section 3. Section 4 is dedicated to its language support system, followed by conclusions in Section 5. ...
... monitoring in real time via an engagement dashboard.3 The EdX platform, recently (2012) conceived by MIT and Harvard University is aimed at supporting massive open online university courses. The platform has been developed as open-source software, akin to Moodle, and is available to other HEI under ...
... ISO/IEC 19788 Metadata for learning resources Parts 1, 2, 3 and 5 of the ISO/IEC 19788 standard, marked in yellow are released as international standards, while the seven remaining parts, marked in light blue, are still under development.5 4 The language support system The need for multilinguality ...Ivan Obradović, Ranka Stanković. "Using technology for knowledge transfer between academia and enterprises" in Knowledge and Management Models for Sustainable Growth, Proc. of IFKAD 2014, 9th International Forum on Knowledge Asset Dynamics, 11-13 June 2013, Matera, Italy, Bari : IFKAD (2014)
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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Optimizacija vodosnabdevanja podzemnim vodama u Srbiji
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)... 75%. , . za . Na , 23 3/s ( 1). 1. Izdašnosti izvorišta podzemnih voda u Srbiji prema tipu vodonosne sredine (m 3 /s) . Yield of groundwater sources in Serbia according to the type of aquifer (m 3 /s) a a A a a O (V a) a Ka a a ...
... 30% of the renewable groundwater reserves is being used of the estimated 67 m 3 /s. The work presents the reserves and state of the current groundwater tapping according to specific aquifer types. An additional 40 m 3 /s can be secured through aquifer regulation and artificial replenishment. The ...
... 57 0,43 - - 5,45 S Ma , / Ta 6,97 0,34 0,50 0,03 - 7,84 a a S a 2,58 - 0,84 0,43 - 3,85 I a a 0,62 - 0,06 1,71 - 2,39 J zap a S a 0,24 - 0,14 1,61 - 1,99 Zap a S a 1,05 - 0,06 0,40 0,02 1,53 U 12,91 3,91 2,03 4,18 0,02 23,08 T zah h 6 3/ 3/s. Ia za a S a Sa ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Optimizacija vodosnabdevanja podzemnim vodama u Srbiji" in Zbornik radova XIV srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 17-20. maj 2012. godine , Beograd : Rudarsko-geološki fakultet (2012)
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LRMI markup of OER content within the BAEKTEL project
... used for retrieving metadata 3. Search OER tagged with LRMI is more easily discovered and accessed 1. Tag Creating LRMI metadata for BAEKTEL OER http://edx.baektel.eu/ http://meta.baektel.eu 2. Publish Tagger outut is pushed to BMP and embeded in web page to make content more visible ...
... (LOM) [4] and the Learning Resource Metadata Initiative (LRMI) [5]. The focus of this paper is on LRMI metadata and their management in the context of BAEKTEL OER framework, which is described in more detail in section 2. In section 3 a review of semantic annotation implementation with examples ...
... the need for a better way to describe the content and thus increase web visibility for OER resources published within BAEKTEL project. In defining metadata for BAEKTEL resources several standards were analyzed and tree of them are being used: Dublin Core (DC) [3], IEEE Learning Object Metadata ...Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić. "LRMI markup of OER content within the BAEKTEL project" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca
Dalibor Erak (2019)Predmet istraživanja doktorske disertacije je tektonska evolucija područja planine Jastrebac u centralnoj Srbiji, gde višefazna tektonska aktivnost od mezozoika do danas komplikuje rekonstrukciju strukturnih odnosa i geološke evolucije ovog prostora. Kompleksna višefazna evolucija planine Jastrebac u Srbiji je demonstrirana kombinovanjem kinematskih podataka prikupljenih na terenu i mikrostrukturnih opservacija sa dodatnim termohronološkim podacima “fission track” i podacima odredbe starosti metodom U-Pb na cirkonima. Gornjokredna ekshumacija bila je praćena gornjokredno-eocenskim navlačenjem i magmatizmom vezanim za kontinentalnu koliziju, pri čemu je akreciona ...... minerala u ovim stenama (Fotografija 5-1). U ovom području na izdancima su opservirani, kako sitnozrni trakasti varijeteti (Fotografija 5-3), tako i srednjozrni gnajsevi (Fotografija 5-4). Fotografija 5-2: Izdanak belih gnajseva kod Mikulovca. Fotografija 5-3: Sitnozrni trakasti gnajsevi kod ...
... o ae E 3 all / S ( LR > 3 3 7 Eg’ O enoyae iB = & j * LS \ is ) E Edo LS Oo $ } oO \ \ 1s ‘ in \ : ; FS \} ace rf ‘s \ ol j + Px ey? i ae Se \ x * “ OM \S 3 Age ea \ ; 7544000 7548000 7552000 7500000 7504000 #7508000 7512000 7516000 7520000 #7524000 7528000 7532000 #7536000 #7540000 0 2.5 5 10 15 20 ...
... u području Jastrepca 26 Slika 5-3: Prikaz rasprostranjenja amfibolita na Jastrepcu. U okviru gnajseva i mikašista na zapadnim padinama Velikog Jastrepca na terenu su uočena manja sočiva amfibolita (Fotografija 5-12) i amfibolskih škriljaca (Fotografija 5-13), koja zbog malih dimenzija nisu ...Dalibor Erak. Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca, Beograd : Rudarsko-geološki fakultet, 2019
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Threshold-induced correlations in the Random Field Ising Model
... different types of contribution to the external waiting time T.,;(i, j; Vin)s thus, see Fig. la, Teel, i5 Vin) = Tenalis Vin) + Trials 5 Vin) + Tenis Vin) (1) where T,,q(i; Vin) is the time taken by the avalanche i to end (i.e. fall from V,, to zero), Tpig(is j; Vin) is the time spent by a whole sequence ...
... cuto� time and the cuto� waiting time for di�erent values of disorder R (all above the e�ective critical disorder), and in inset the scaling collapse of the Tw,0 vs Vth curves, pertaining to di�erent distances r to the critical disorder. www.nature.com/scientificreports/ a 10°64 b 10° Ty Tyo 5 10°84 ...
... Fig. 3. Here, we would like to remark that the generalized scaling hypothesis Eq. (12) is not su�cient to predict the scaling for the distribution of Tmid waiting time. Nevetheless, our data indicate that the same type of scaling also holds for this distribution, as is shown in panel f of Fig. 3, which ...Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević. "Threshold-induced correlations in the Random Field Ising Model" in Scientific Reports, Springer Science and Business Media LLC (2018). https://doi.org/10.1038/s41598-018-20759-6
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Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu
Četvrtu industrijsku revoluciju – Industriju 4.0 karakteriše upotreba cyber-fizičkih sistema. Da bi se postigla optimalna strategija održavanja (ali i eksploatacije), neophodno je razviti sisteme koji podržavaju napredne inteligentne sisteme održavanja ili tehnologije pametnog održavanja. Iz toga su proizašli postulati Prediktivnog održavanja 4.0 (PdM 4.0) koji definišu veoma blisku budućnost u oblasti održavanja tehničkih sistema pa i rudarske opreme. PdM 4.0 uključuje iskorišćenje snage veštačke inteligencije za stvaranje stalnog uvida u otkrivanje uzroka i anomalija u radu opreme, koje se ...Predrag Jovančić, Vesna Damnjanović, Dragan Ignjatović, Miloš Tanasijević, Stevan Đenadić. "Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu" in IX Međunarodna konferencija UGALJ 2019, Zlatibor, Srbija, 23-26. oktobar 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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Efficiency and lifetime of medium voltage transformers
Snežana Aleksandrović, Vesna Damnjanović. "Efficiency and lifetime of medium voltage transformers" in XVI International Scientific – Professional Symposium, INFOTEH, Jahorina, 22. mart - 24. mart 2017., Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2017)
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... at high angles in medium- to low-grade rocks, generally in areas close to Južna Morava River (Fig. 3). Maximum of Sxy is dipping towards the north-east at a moderate angle, but a significant population of subvertical cleavage striking north to north- east-south to south-west is also observed ...
... parallel to the plane of image. Length of pencil 143 mm. c Polycrystalline sigmoid indi- @ Springer cating top-to-the-south-west shear sense, west of the Vrvi Kobila shear zone (Fig. 3; 21"55"25.176”E, 42%40'19.199"N). Length of metal tip on a pencil 21 mm. d C' shear bands indicating: top-to- ...
... posi- tion in reference to Fig. 3 is given in the insef observed in this area (Fig. 8d). Kinematic indicators such as foliation-parallel asymmetric drawn boudins (Fig. 5f; drawn- to shearband-boudin transition of Goscombe et al. 2004) and C' shear bands suggest top-to-the-south-west sense of ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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A Tel Platform Blending Academic And Entrepreneurial Knowledge
... Section 2 we describe the goals that are to be achieved by our approach. An insight in the platform illustrated by a conceptual map is given in Section 3, while section 4 offers more details on its language support system. Conclusions are given in Section 5. 2. THE MAIN GOALS OF BAEKTEL The ...
... “digitised materials offered openly and freely to educators, students, and self-learners to use and reuse for teaching, learning, and research.” [3] In this paper we propose a solution both for making emerging entrepreneurial knowledge available to students in academic institutions, and for ...
... 63(1), 87-110. [3] Bissell, A. N. (2009). Permission granted: open licensing for educational resources. Open Learning, 24(1), 97-106. [4] Goodyear, P., & Retalis, S. (Eds.) (2010). Technology-Enhanced Learning, Design Patterns and Pattern Languages. Sense Publishers. [5] Open Consortium ...Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović. "A Tel Platform Blending Academic And Entrepreneurial Knowledge" in Proceedings of the The Fourth International Conference on e-Learning (eLearning-2013), September 2013, Belgrade, Serbia, Belgrade, Serbia : Belgrade Metropolitan University (2013)
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Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља
Бојан Земљак (2024)Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...... 300 de _G _SM “SK S 3E ' Me 3 lR a Cauka 3. Ipukas o0nacmu npueHa eneMeHama pemkux 3eMa/ba. Hssop: Cnuka je npeysema u3 paoa: Preliminary Estimates of the Quantities of Rare-Earth Flements Contained in Selected Products and in Imports of Semimanufactured Products to the United States, 2010 By ...
... clean energy technologies: Grand opportunities to create wealth from waste. Jouwmal of Cleaner Production, 267, p.122048. [143] Chen, Y., Liu, W., Feng, J., Guo, R., Fan, F., Shen, J., Zhang, G. and Tu, H., 2022. Magnetocaloric effect in LiLn6O5 (BO3) 3 (Ln= Gd, Tb, Dy, and Ho). Cryogenics, 124, ...
... KoMucuje Copper 28% Cauka 5. Ipuka3 aeMa:ba ca HajsHauajHuju yOenoM cHa00e6ahba ca KpumuuHu e/teMeRmuMa Ha c6emcKoM mp2oicuuam)y. Hsaop: Cnuka je npeysaema us paoa: Study on the Critical Raw Materials for the KU 2023, o0jaa;beHo oO cmpaHe Eaponcke KoMucuje 10 3. NIOCTYIIHOCT H IPHPOJIHE PE3EPBE ...Бојан Земљак. Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља, 2024
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... 15th-19th-2020 Figure 3 Final model of flow heights A) 16s B) 30s C) 50s D) 100s SCG-XIII INTERNATIONAL SYMPOSIUM ON LANDSLIDES. CARTAGENA, COLOMBIA- JUNE 15th-19th-2020 Figure 4 Erosion depths in meters in time steps A) 16 s B) 30 s C) 50 s D)100 s 5 CONCLUSIONS Final models ...
... Tomography) profiles. According to geophysical ERT investigation, the highest depths of the deposits are about 20 m. Calculated final volume is about 495 000 m 3 while initial volume was computed to be 447 400 m 3 . The results of erosion depth at different time steps are given in Fig.4. ...
... INTERNATIONAL SYMPOSIUM ON LANDSLIDES. CARTAGENA, COLOMBIA- JUNE 15th-19th-2020 composition, as well as grain size distribution (from fines to up to m 3 boulders in volume). The total length of the flow is 1.5 km and width is about 350 m in the widest part in the source area (Fig. 2). The nearest ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)