Претрага
888 items
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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)
... west-vergent thrust juxtaposing the Vlasina Unit over the Lower Complex (Vukanović et al. 1973; Krstić and Kara- mata 1992), or, alternatively, as a post-Late Cretaceous dextral shear zone (Kržutner and Krstić 2002). Addition- ally, several reports suggest that these units originally had a stratigraphic ...
... strike-slip fault (Malešević et al. 1980; Vukanović et al. 1982), an east-vergent thrust (Krstić and Karamata 1992), or a westward thrust reacti- vated as dextral strike slip in the Neogene (Kršutner and Krstić 2002). It has been recently interpreted as a ductile shear zone (Stefan M. Schmid, personal ...
... al. 1973), along which the Vlasina Unit has been thrust onto the Lower Complex (Dimitrijević 1963; Vukanović et al. 1973; Krstić and Karamata 1992: Kriutner and Krstić 2002). Our studies in the area suggest the existence of a major ductile east-dipping shear zone with top-to-the-east to south-east ...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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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.... 46 pp. Radulović, D., Boţović, D., Mihailović, S., 2015: Krečnjak iz leţišta “Maljat” - Danilovgrad, potencijalna sirovina za dobijanje punioca. Geološki glasnik, knj. XVI. JU Zavod za geološka istraţivanja Crne Gore, 163-171 str., Podgorica. Radulović, D., Boţović, D., 2015: Upotreba fino ...
... TG DTA e n d o D T A [ V ] Slika 4.1: Termički dijagrami (DTA/TG) uzorka krečnjaka K-1/10 (Klikovače) 0 200 400 600 800 1000 -50 -40 -30 -20 -10 0 e n d o DTA TG (20-1000) o C-43,59% 894 o C 50/10 M-1/09 T [ o C] T G [ % ] -100 -80 -60 -40 -20 0 20 D T A [ V ...
... 0 20 e n d o D T A [ V ] Slika 4.7: Termički dijagrami (DTA/TG) uzorka krečnjaka SL-1/10 (Slatina) 0 200 400 600 800 1000 -50 -40 -30 -20 -10 0 e n d o (20-1000) o C-42,75% 893 o C DTA TG 50/12 J-1/09 T [ o C] T G [ % ] -100 -80 -60 -40 -20 0 20 D T A [ ...Darko M. Božović. "Mineragenija i potencijalnost karbonatnih sirovina rudnog reona Bjelopavlića (Crna Gora)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-28)
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... C D D D D D D D D x D )D(C D )D(p D )D(p 00000 D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p D )D(p 000 0 D )D(p D )D(p D )D(C 0 D )D(p 00 00 D )D(p 0 D )D(C D )D(p D )D(p 0 000 D )D(p D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p ...
... /3/ 2 /2/ /2/ /2/ 2 /1/ /1/ /1/ 2 1 output6 input5 output3 input2 D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ D D p~ C )Q(D~ 0 )Q(D~ 0 )Q(D~ )Q(D~ 0 V (223) Где се обе матрице, и [NL] и [V] користе у изразу (224): ...
... CLoop CLoop CLoop CLoop D QL D QL D QL8 ppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp = = = = = = = = ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... C D D D D D D D D x D )D(C D )D(p D )D(p 00000 D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p D )D(p 000 0 D )D(p D )D(p D )D(C 0 D )D(p 00 00 D )D(p 0 D )D(C D )D(p D )D(p 0 000 D )D(p D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p ...
... /3/ 2 /2/ /2/ /2/ 2 /1/ /1/ /1/ 2 1 output6 input5 output3 input2 D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ D D p~ C )Q(D~ 0 )Q(D~ 0 )Q(D~ )Q(D~ 0 V (223) Где се обе матрице, и [NL] и [V] користе у изразу (224): ...
... CLoop CLoop CLoop CLoop D QL D QL D QL8 ppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp = = = = = = = = ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)
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A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...... a ir - st o p p in g w it h d o o r - m ai n f an F ig . 1 4 . T h e a ir d is tr ib u ti o n o b ta in ed b y st a n d a rd m et h o d . M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N ...
... .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 5 . F o r p er so n al u se o n ly . 364 N. Lilić, I. Obradović & R. Stanković CF D INV E NT S Data acquisition ...
... - st o p p in g w it h d o o r - m ai n f an F ig . 1 1 . T h e ca n o n ic a l v en ti la ti o n sc h em e o f th e “ S o k o ” co a l m in e. M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y ...Nikola Lilić, Ivan Obradović, Ranka Stanković. "A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice" in Mineral Resources Engineering 11 no. 4, Imperial College Press (2002): 361-382. https://doi.org/10.1142/S0950609802001014
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Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine
Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
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A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach
Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependabilityNikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović. "A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach" in Applied Sciences, Basel, August 2024, MDPI (2024). https://doi.org/https://doi.org/10.3390/app14177947
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Zoniranje buke na površinskom kopu Polje D" u RB " Kolubara"
Zoran Radović (2011)Zoran Radović. Zoniranje buke na površinskom kopu Polje D" u RB " Kolubara", Beograd:Rudarsko-geološki fakultet, 2011
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Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)
Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V. (2010)Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V.. "Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)" in Proceedings of the 19th Congress of the Carpathian Balkan Geological Association, Thessaloniki, Greece, 23-26 September 2010, (Abstract Volume), Geologica Balcanica, Sofia:Carpathian-Balkan Geological Association (2010): 285-286
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Identification of alginite and bituminite in rocks other than coal: results of Round Robin Exercises of the Identification of Dispersed Organic Matter Working Group of the ICCP
Kus J., Araujo C.V., Borrego A.G., Flores D., Hackley P.C., Hámor-Vidó M., Kalaitzidis S., Kommeren C.J., Kwiecińska B., Mastalerz M., Mendonça Filho J.G., Menezes T.R., Misz-Kennan M., Nowak G.J., Petersen H.I., Rallakis D., Suárez-Ruiz I., Sýkorová I., Životić Dragana (2017)Kus J., Araujo C.V., Borrego A.G., Flores D., Hackley P.C., Hámor-Vidó M., Kalaitzidis S., Kommeren C.J., Kwiecińska B., Mastalerz M., Mendonça Filho J.G., Menezes T.R., Misz-Kennan M., Nowak G.J., Petersen H.I., Rallakis D., Suárez-Ruiz I., Sýkorová I., Životić Dragana. "Identification of alginite and bituminite in rocks other than coal: results of Round Robin Exercises of the Identification of Dispersed Organic Matter Working Group of the ICCP" in International Journal of Coal Geology 178, Amsterdam, Netherlands:Elsevier BV (2017): 26-38. https://doi.org/10.1016/j.coal.2017.04.013
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Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B"
Tomislav Trpković (2024)Predmet ovog rada baziraće se na proračunu i usvajanju mašinskih instalacija potrebnih za nesmetano funkcionisanje sistema dve međusobno povezane celine Absorber - Pumpna stanica, preko FRP ( Fiberglass Reinforced Plastic) cevovoda kojim se odvija transport suspenzije krečnjaka neophodnog u samom procesu odsumporavanja dimnih gasova. Pored tehničkog opisa same tehnologije koja uključuje tri objekta: Absorber, Pumpna Stanica i cevovod, glavni deo rada odnosiće se na proračun i usvajanje mašinskih instalacija koji uključuju recirkulacione radijalne centrifugalne pumpe i cevovode kojima ...postrojenje za odsumporavanje dimnih gasova, termoelektrana, pumpna stanica, FRP cevovod, Absorber, transport suspenzije gipsa, prirubnica, ventil, potisni cevovod, usisni cevovod... komad D.4 0 D D D 0 0 D D 0 0 komad 1.3 0 | |3 |3.9 | 0 3 |3.9 | | 3 |3.9 0 0 |3 |3.9 |f komad 1.5 0 D D D 0 0 D D 0 0 |f komad || 0 D D D 0 0 D D 0 0 [Zasun D.17 0 D D D 0 0 D D 0 0 epovratna klapna | J J J J J J J J J J |Leptir ventil D.24 || D.2 D.O || D.2 O .0 || D.2 .0 || D.2 .0 |Odvajač ...
... |Odvajač nečistoće 10 0 D.O D.O | D.O0 _O .0 | D.O .0 0 D0.O0 0 erač protoka 10 |D D D D |D |D D D |D |D |Koeficijent otpora (Ukupan) |Ukupno .1 |Ukupno |5.7 |Ukupno M.1 |Ukupno 5.7 JUkupno .1 |Ukupno 5.7 |Ukupno 4.1 |Ukupno 5.7 roračunski dinamički pad pritiska (mST) 3.8 3.8 3.8 3.8 |Vrednost ...
... Koleno (45 stepeni) 0.35 1 |D.35 Koleno (90 stepeni) 0.45 12 |b.4. T komad D0.4 D } T komad 1.3 5 |6.5 T komad 1.5 D |D T komad 1 D |D Pregradni ventil 0.17 |} |O nepovratni ventil |2 |} |O Leptirasti ventil 0.24 |2 D.48 Sito 10 D |} Protokomer |7 D |D TOTAL koef otpora 12.73 ...Tomislav Trpković. Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B", 2024
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Threshold-induced correlations in the Random Field Ising Model
... λ λ= =ζ ζ+ − + −D T b b V b b D T V D b S b V b b D S V( / ; , ) ( ; , ), ( ; , ) ( ; , ), (13)T x w T S x x w x Sth 1 th 1 th 1 th λ λ=ζ +D T b b V b b D T V( / ; , ) ( ; , ), (14)T x w Tint th 1 int thint int λ λ λ λ = = . ζ ζ + + D T b b V b b D T V D T b b V b b D T V ( / ; , ) ...
... the Barkhausen e�ect4–7. In athermal (T = 0) and nonequilibrium case, the model has a disorder induced transition8–10 in dimensions 2 ≤ d < 6, while for dimensions d ≥ 6 it is described in terms of the mean �eld theory11–14. In this model, when the external magnetic �eld slowly changes, the system relaxes ...
... and the Barkhausen effect*. In athermal (T= 0) and nonequilibrium case, the model has a disorder induced transition®-!° in dimensions 2 < d < 6, while for dimensions d > 6 it is described in terms of the mean field theory'"“*. In this model, when the external magnetic field slowly changes, the system relaxes ...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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Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...... shape) 0, ako je 0 ( , ) 1, ako je 0 d P a b d II Kvazi (U- shape) 0, ako je ( , ) 1, ako je d q P a b d q III Linearni (V- shape) 0 , ako je ( , ) / , ako je 1 , ako je d q P a b d p q d p d p IV Nivoski (Level- ...
... shape) 0 , ako je ( , ) 1/ 2 , ako je 1 , ako je d q P a b q d p d p V Linearni sa područjima indiferenci je 0 , ako je ( , ) ( ) / ( ) , ako je 1 , ako je d q P a b d q p q q d p d p VI Gausov (Gaussian prefferen- ...
... (31) 1, 0, ks ks ks ako je c c f ako je c c 1, , 1,2,..., ( 1) m k k s ksd d s n m m (32) 1, 0, ks ks ks ako je d d g ako je d d Na osnovu matrice dominacije slaganja i neslaganja, formira se agregatna matrica dominacije ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
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Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
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 ...... ic d ir ec ti o n s b as ed o n th e re su lt s o f p ri n ci p al co m p o n en t an al y si s (K ir sc h v in k 1 9 8 0 ). K ey : L at . N an d L o n . E : g eo g ra p h ic co o rd in at es (W G S 8 4 ), n /n o : n u m b er o f u se d /c o ll ec te d sa m p le s; D , I (D c , I c ): d ec li ...
... sc ep ti b il it y ei th er sc at te re d d ir ec ti o n s o r b ad d em ag n et iz at io n cu rv es . * L ef t o u t fr o m te ct o n ic in te rp re ta ti o n d u e to cl o se n es s to th e d ir ec ti o n o f p re se n t E ar th m ag n et ic fi el d o n th e sa m p li n g ar ea . M ag n et ...
... ad in g s fo r th e fi el d o ri en ta ti o n o f th e co re s w er e co rr ec te d u si n g IG R F -1 2 In te rn at io n al G eo m ag n et ic R ef er en ce F ie ld m o d el (T h éb au 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 ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
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Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic
This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композицијаMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović. "Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic" in Energies, MDPI AG (2022). https://doi.org/10.3390/en15186786
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Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules
I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac (2023)In this article, the biological evaluation and interaction of three selenium-based trans-palladium complexes (Pd–Se1, Pd–Se2, and Pd–Se3) with small biomolecules were performed. The UV–Vis kinetic studies on substitution reaction of synthesized complexes with selected biologically important N- and S-bonding ligands (LCys, GSH, L-Met, 50-GMP, L-His) has emphasized greater affinity of sulphur-based ligands for complex-binding, while the general order of the reactivity was L-Cys > GSH > L-Met > 50-GMP > L-His. The complex reactivity toward small biomolecules is influenced ...I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac. "Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules" in Journal of Coordination Chemistry, Informa UK Limited (2023). https://doi.org/10.1080/00958972.2023.2256934
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Дефинисање механичких својстава алтерисаног стенског материјала лабораторијским методама
Вељко М. Рупар (2022)Основни циљ овог рада је да представи методологију одређивања механичких својстава хетерогеног стенског масива који изграђују дацит (Д) и алтерисани дацит (АД), где је уочена је зона постепеног преласка од алтерисаног дацита до дацита. Механичка својства стенског масива у тој зони утврђена су на основу лабораторијских испитивања једноосне и троосне чврстоће на притисак стенског материјала композитних узорака. Композитни узорци су се састојали од дискова стенског материјала, при чему је висина дискова h дефинисала различити процентуални удео појединог стенског материјала, ...дацит, алтерисани дацит, једноосна чврстоћа на притисак, троосна чврстоћа на притисак, композитни узорци, механика стена, стабилност косинаВељко М. Рупар. Дефинисање механичких својстава алтерисаног стенског материјала лабораторијским методама, Београд : [В. Рупар], 2022
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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite
Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...... 3400 3575 ___ ——— s ___ _— d) |--7" - — 3740 d)) c |-- ——· —— — I r — TTAA K_ s Fi 3670 -i 3220 3400 3555 8, 5 _ -. ——\ b) 3 —— \ <| _ — c) WJE — Y | ___ \ 3) T T T T ı 3000 3250 3500 3750 4000 Wavenumber / cm" Figure 4. FTIR ATR spectra of samples (a-d) (see Figure 1) in the O-H/H»O ...
... are found in samples a, b and d, while albite is found only in samples a and b. Crocidolite is found in samples b and d, while tremolite is found in samples b and c. Diopside and orthopyroxene are found in samples b and c, while talc is found in samples c and d. Minor abundant mineral phases noticed ...
... [13]. Figures 3 and 4 show representative FTIR ATR spectra collected on powdered fragments of the shards. Spectrum d/ has been recorded on a fiber bundle extracted from sample d. The bands, for instance, the Si-O stretching, and bending, modes at ~960 (1015 and 1080) and 620 cm-! (Figure 3), ...Philippe Colomban, Aleksandar Kremenović. "Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite" in Materials, MDPI AG (2020). https://doi.org/10.3390/ma13163597
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Polyhedral characteristics of the cosalite-type crystal structures
Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus. "Polyhedral characteristics of the cosalite-type crystal structures" in The Canadian Mineralogist, Mineralogical Association of Canada (2019). https://doi.org/10.3749/canmin.1900017