Претрага
1575 items
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Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study
Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...... rock avalanches and debris flows (Schraml, 2015; Sosio, 2007; Frank, 2017). As input, three quantities must be specified to perform a numerical calculation: (1) a digital elevation model (DEM), (2) source zone area and (3) model friction parameters. Pre- event DEM resolution characterizes the natural ...
... initial parameters and deposition zones. The Selanac debris flow was triggered after extreme precipitation of about 230 mm over a period of 72 h in May 2014.The Selanac is a complex debris flow, with large depth in source zone (30m), and length of about 1.5km. First results were made using 30x30m DEM ...
... solid phase (the term containing / which extensively controls deceleration behaviour of a more slowly moving flow. The resistance of the viscous or turbulent fluid phase (the term including / prevails for a more quickly moving flow (Bartelt et al., 2013). Figure 1 The topography Z(X, Y) is given ...Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović. "Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study" in 4th Regional Symposium on Landslides in the Adriatic Balkan Region, 23-25 October 2019, Sarajevo, Bosnia and Herzegovina, Geotechnical Society of Bosnia and Herzegovina (2019). https://doi.org/ 10.35123/ReSyLAB_2019
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Mesozoic carbonate rocks in Serbia used as dimension stone
Vesna Matović, Tijana Vojnović Ćalić (2016)The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...... SETIC _ 901 [4] _ | A _ _ L O V - CI-LS I c _ 0c Lid _ LCO _ _ 089% 1-LS 9 O c _ 8 8 _ St'0 _ _ 0997 - OL-LS i i A _ lr 43 _ x _ _ 0/9% 6-LS 9 1 1 [6 t OL 91 [55 ! O c 089% S-LS [ A _ 9c 9 _ 190 _ _ ...
... moderately high values of compressive strength. The scope of use is established according to a comparison of statically analysed engi- neering properties with the technical requirements neces- sary for a suitable reference of natural stone products. The V. Matović (b+) Department of Mineralogy ...
... 1990; Matović 2009; Gajić et al. 2011; Sudar et al. 2013), but a detailed investigation of quality in terms of the possibility of use has not yet been conducted. Although some indi- vidual limestone quarries have deposits of more than a million cubic metres, with the potential production capac- ...Vesna Matović, Tijana Vojnović Ćalić. "Mesozoic carbonate rocks in Serbia used as dimension stone" in Bulletin of Engineering Geology and the Environment, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s10064-015-0722-0
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Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households
The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...... over 54 pellet production facilities were actively operating [7]. To obtain a comprehensive analysis of the environmental impact of heating systems (HSs) based on wood biomass, a complete lifecycle process that involves a holistic cradle-to-grave assessment approach is recommended [8]. The life ...
... systematically analyzes pollution and resource connected to delivering a specific product or service. As such, the LCA identifies environmental hot spots and enables a comparison of different energy sources and HSs for households [11]. A systemized framework for conducting LCAs was released by the Int ...
... Ivezić. Marija Živković 430 However, since LCA considers the environmental aspects and the potential impacts of a product or a service system throughout its life, it becomes a very useful method for researching studies related to the problem of sustainable development, cleaner production, energy ...Boban Pavlović, Dejan Ivezić, Marija Živković. "Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households" in 5th International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo, 2020, University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo (2020)
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Palinomorfe sa lokaliteta Gostuška reka (Stara planina)
Ivan Rutović (2024)U radu su prikazani rezultati palinološkog istraživanja permsko-trijaskih sedimenata sa lokaliteta Gostuška reka. Palinološki kompleksi su detaljno analizirani, što je omogućilo morfološku, taksonomsku i paleoekološku identifikaciju palinomorfi. Istraživanje je pokazalo prisustvo velikog broja spora i polena golosemenica, dok je polen skrivenosemenica zastupljen u manjem procentu. Na osnovu paleoekoloških analiza, zaključeno je da je tokom formiranja sedimenata na lokalitetu vladala aridna klima, sa povremenim vlažnim fazama koje su omogućavale razvoj močvarne vegetacije.... AAAAAA || 1. Osnovni pojmovi u palinologiji..........aaa a oaaaaaoaaaatataot 2 1.1. Spore a oaaa a a a aaaaaaaaaoaaoaaaoaoaatttttk 2 1.2. Polen a aaanaaaaaaaaaoaaaaaaaaaaoaaetaaaaeeaoaagaataoat 3 2. Geografski prikaz terena ....aaaaaa a aaaaaeaaaaeaaaaaeaaaaagaaaaoeı 6 3. Geološki prikaz terena ...
... .aaaa a aaa a aaaoaaaaaoeeaaaaaaatatt 10 4.1. Labaratorijska obrada uzoraka ........aaa a aaaaeeoaakakeot 10 4.2. Karakteristike palinoloških spektara ........aaaa a aaadaacee 12 4. Paleoekološka analiza ... aaaoaaataeeaaaaaakatt 17 5. Prikaz paleontološkog materijala.......naaaaaaa a ataaaaaaket ...
... Permian saccate and monosulcate miospores. Palaeontology, Vol. 8, Issue 2, p.p.322- 354. Dahanayake, K., Jayasena, H. A. H., Singh, B., Tiwari, R. S., & Tripathi, A., 1989: A Permo-Triassic(?) plant microfossil assemblage from Sri Lanka. Review of Palaeobotany and Palynology, Amsterdam, Vol. ...Ivan Rutović. Palinomorfe sa lokaliteta Gostuška reka (Stara planina), 2024
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Избор одговарајуће механичке методе
Анастасија Мирјанић (2024)Експлоатација нафте и гаса кључна је за задовољење глобалних енергетских потреба. Различите методе се користе за ефикасно вађење тих природних ресурса из земљe. Механичке методе експлоатације, које укључују различите врсте пумпи и компресора, играју значајну улогу у овом процесу. У нафтној индустрији, ефикасно вађење нафте и гаса зависи од избора одговарајуће технологије пумпања. Две од најраспрострањенијих технологија су дубинске пумпе са клипним шипкама (енгл. Sucker rod pumps- SRP) и електричне потапајуће пумпе (енгл. Electrical submersible pump- ESP). Овај завршни рад ће ...Анастасија Мирјанић. Избор одговарајуће механичке методе, 2024
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Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)
Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...Nevenka Novaković, Predrag Dabić, Vesna Matović. "Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10794-6
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Примена беспилотне летелице „Wingtra One“ при решавању геодетско-мерачких задатака на руднику угља „Костолац“
Милица Лунгић (2024)Беспилотне летелице су нашле широку примену у разним гранама индустрије и привреде данашњице, укључујући геодетско-мерачка снимања. Са усавршавањем самог начина подршке хардвера и софтвера, дошло је до могућности у напредовању развоја самих беспилотних летелица. Самим тим се отворила сфера могућности да у релевантно кратком временском периоду дође до самог снимања, обраде и израде поузданих ортофото модела, дигиталних модела надморских висина (ДЕМ), дигиталних модела површи (ДСМ), 3D модела површи.У овом раду је детаљније објашњен сам принцип рада беспилотнелетелице ,,Wingtra One,, ...БАС систем, беспилотна летелица Wingtra, план лета, израда модела, рудник угља „КостолацБАС систем, беспилотна летелица Wingtra, план лета, израда модела, рудник угља „Костолац''... ...vvv uadaaaadddduuutoı 14 4.6. IIpaMeHa BAC cHcTeMa.aaa a aaeaeaaaaoaakaakattt 15 5. WingtraOne Gen IH.....caaaa a eaaaaoaaatakaaNatek 17 5.1. ZlenoBa Wingra One a nanaaoaanateaaaaaatovı 17 5.2 IIpojeKaT cHHMaĐba..aaaaa a aaa a aaaaaaaaaeotatatot 21 5.2.1. IInanipame JIeTa al aaaaeaaaaa ...
... OacCeHyaaaaaa a aaaaaaaaaaaaaaoaaaaaaaaaa a aaaaaaaaaaaaaagaaeaatatttt 7 4. BecHHJIOTHC JICTEJIHIHC .........aaaaanaaaaaaaaa davvv da a utuVVı 10 4.1. . KnacadKatuuja OccCHHJIOTHHX JIETEJIMHIMA ... 10 4.2. KoMrroHeHre OecIIHJIOTHHX JICTEJIHIHA .. aaaaaaaacanoı 12 4.3. . KaMepe (cCeH3OPpH) a aaaaaaa ...
... 6: [O oonazanuuma 27 Cnuka 6.7: 3D ooe:an oonaozanuuma Ojunaranimrre je cauMbeHo M3 TE-KO „A“ a TE-KO „5“. CaMo cHHMaMbe oMoryhanBa npaheme eHOHOBaMe yTJba Ha HOMCHyTHM OJUMTaJnmrırHMa. TE-KO „A“ cny)xuH 3a JemOHOBaMe yrJba y CBpXe rpeJabba Kocro:a, IIoxxapepBria H OKOJIHHX cema MOK ce Ha ...Милица Лунгић. Примена беспилотне летелице „Wingtra One“ при решавању геодетско-мерачких задатака на руднику угља „Костолац“, 2024
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Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина
Aлександар Додеровић (2024)Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритамAлександар Додеровић. Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина, Београд : [А. Додеровић], 2024
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Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides
Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis... Porkolab et al. a o LA D2 reverse faults” ~ a OO Verse faults 1000Em — — — – supposed D2 thrust — @ • outcrop location 900 E and label of outcrop 800 — 700 — | ~ 600] ~ – — – – – – –v — __ Fig. 4 Mesoscale Do deformation structures. For outcrop locations see Fig. 2a. a Southwest-verging ...
... 1). The vergence of D. thrusts and asym- metric folds indicates a top-SW tectonic transport direction in the NE part of the study area, but a top-NE tectonic transport direction in the SW part of the study area (Figs. 2, 7). A top-SW tectonic transport direction is in agreement with the prevailing ...
... (2008). A possible kinematic solution is shown by Fig. 7b suggesting that the D, nappe contact at the base of the Western Vardar ophiolites might have reactivated as a roof thrust during early Do back- thrusting: thus accommodating the displacement of the Southern Triassic. Such a roof thrust ...Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor. "Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides" in Swiss Journal of Geosciences (2019)
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Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E
Luka Nikolić (2024)Površinska eksoloatacija ležišta mineralnih sirovina, a posebno uglja (lignita) vrši se primenom različitih rudarskih mašina. U zavisnosti od tipa ležišta, rudarsko-geoloških uslova, ekonomske analize i sl. koriste se sistemi sa kontinualnim ili diskontinualnim načinom rada.Kod kontinualnih sistema, primenjuju se kompleksne rudarske mašine kod kojih se proces odvija neprekidno odnosno bez ciklusa utovara, transporta i odlaganja i najčešće rade u sve tri smene. Rotorni bageri i bageri vedričari, transporteri sa gumenom trakom, odlagači ili deponijske mašine čine tkz BTO ili ...... aaaaaaaaaaaa a eeaeeaieaeaataaeaeakeakttee 4 2.2. Održavanje mehanizacije na otkopu Polje E..........aaaaaaaaaaaaaaaaaa a eaaaaaaaaaakatkteee 6 OPŠTE O ROTORNIM BAGERIMA ......aaaaaaaaaaaaa a aaatatatiaeeaaaattaiaeekkahatttatkeek 7 3.1. Razvoj i oblast primene.......aaaaaa a aaaaaaaaaaaaaaea a aaaaaa ...
... 12,5 m Brzina trake...............aaa... a a a d tddd0ı 0,42 m/s Prijemna traka (traka 2) Osno rastojanje bubnjeva............ dttt 57 m 41 Diplomski rad Univerzitet u Beogradu – Rudarsko-geološki fakultet Brzina trake...............aaa... a a d du ddu00oı 4,25 m/s Snaga motora....... ...
... . i tadoiccı 17m Brzina trake................a u a a i avnı 4,25 m/s Snaga motora..............o dtt tota ttt 2x200 KW Odložna traka (traka 4) Osno rastojanje bubnjeva..................... i tadoiccı 22 m Brzina trake...............aaa. . a a o dt0ı 4,25 m/s Snaga motora............. dd ...Luka Nikolić. Proračun osnovnih mehanizama na rotornom bageru ShRs 1300 na PK Polje E, 2024
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Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations
The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. ...... iPhone AS A TOOL IN STRUCTURAL GEOLOGY Igor Ivanovski, Bojan Maksimov, Gose Petrov, Gorgi Dimov, Milorad Jovanovski, Natasha Nedelkovska — O a 285 Enepruja, Đocu.inu ropuBa u Jar:tepojiHa HeyTpaJIHocT CEEGS PROJECT – A NEW PERSPECTIVE FOR GREEN ENERGY Jris Puković Kartal O a 293 CHCTEM ...
... gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer Whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting ...
... Geologists of the Republic of North Macedonia 30 . Uzz [10" s?] (a) x [km] 1:) Ao = 0.3 g/cmš 30 – Uzz [10% s?}] -30 - a H | x{[km] 10 -- |22 Aoc = 0.3 g/cm? Figure 1. Vertical gravity gradient (Uzz) curves over (a) normal fault and (b) reverse fault with positive density contrast ...Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković. "Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations" in Vth Congress of the Geologists of the Republic of North Macedonia, Ohrid, Republic of North Macedonia, September 27-28, 2024, Macedonian Geological Society (2024)
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The number of nonunimodular roots of a reciprocal polynomial
Dragan Stankov (2023)We introduce a sequence Pd of monic reciprocal polynomials with integer coefficients having the central coefficients fixed as well as the peripheral coefficients. We prove that the ratio of the number of nonunimodular roots of Pd to its degree d has a limit L when d tends to infinity. We show that if the coefficients of a polynomial can be arbitrarily large in modulus then L can be arbitrarily close to 0. It seems reasonable to believe that if ...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. "The number of nonunimodular roots of a reciprocal polynomial" in Comptes rendus mathematique, Elsevier France Editions Scientifiques et Medicales (2023). https://doi.org/10.5802/crmath.422
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Parallel Bidirectionally Pretrained Taggers as Feature Generators
In a setting where multiple automatic annotation approaches coexist and advance separately but none completely solve a specific problem, the key might be in their combination and integration. This paper outlines a scalable architecture for Part-of-Speech tagging using multiple standalone annotation systems as feature generators for a stacked classifier. It also explores automatic resource expansion via dataset augmentation and bidirectional training in order to increase the number of taggers and to maximize the impact of the composite system, which ...Ranka Stanković, Mihailo Škorić, Branislava Šandrih Todorović. "Parallel Bidirectionally Pretrained Taggers as Feature Generators" in Applied Sciences, MDPI AG (2022). https://doi.org/10.3390/app12105028
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Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer
Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)... [10]. 4.9.5 Conclusion For this proiect numerous activities were undertala local waterworlcs encluiry field survey and measurements, the establishment of a GW monitoring network, the creation of a GW initial database, common workshops and seminars for local capacity building, and wa ...
... Great Hungarian Basin) represents a geographicai and geological entity that spreads over the territory ofseveral countries. The central | ,,, il i *ti':i !l:i!lr::l llr,:ir',. 'lii l:l' : i::,;!l ritl ::lli;' ;:iiii li:i till: j l.,tt,:ii:l.i.r!:i:.i, ,,:t .,a::.: ::::iia:); t: ""#d? ,& x' ...
... 1). The Pannonian basin is a typical lowland, whose height above sea level is mainly 70-720 m. The flat relief features various geoiogical structures, such as loess plateau, loess terraces and alluvial plains, and small depressions in between prevai[. The region has a moderate continental climate ...Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić. "Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer" in Transboundary Water Resources Management - A Multidisciplinary Approach, Weinheim, Germany : Wiley-VCH (2011): 143-149
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Моделирање утицаја одступања линије најмањех отпора од пројектоване на интензитет потреса од минирања
Стефан Милановић (2024)Према дефиницији линија најмањег отпора представља најкраће растојање од центра минског пуњења до слободне површине. Oвим истраживањем представљен је утицај линије најмањег отпора, као и њеног одступања од пројектоване на интезитет потреса услед минирања. Проблем линије најмањег отпора је веома заступљен у пракси, где се занемарује изглед слободне површине, који може бити врло неправилан. Линију најмањег отпора је потребно мерити целом дужином минске бушотине према слободној површини, иако је у пракси случај да се мери најчешће као растојање од ...линија најмањег отпора, 3D модел, потреси услед минирања, минирање, слободна површина, метода раздвојених елеменатаСтефан Милановић. Моделирање утицаја одступања линије најмањех отпора од пројектоване на интензитет потреса од минирања, Београд : [С. Милановић], 2024
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Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)
A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...... r source, operating two production wells with a total capacity of 54 l/s; the TM groundwater source, using a single production well with a discharge rate of 35 l/s; and the LŽT - Kikinda groundwater source, which operated two production wells with a total capacity of 50 l/s. Effective infiltration ...
... applying a Monte Carlo approach, with Geographic Information System (GIS) support, is a useful tool for delineating groundwater protection zones [14]. Particle tracking simulations can be used to determine travel times from recharge to discharge areas along identified flowpaths [15]. Using a standard ...
... code and a technique based on adjoint theory, and combining forward-in time and backward-in time transport modeling, it is possible to determine the impact of potential contaminant sources at unknown locations within a well capture zone, including the expected times of arrival of a contaminant ...Dušan Polomčić, Dragoljub Bajić, Jelena Zarić. "Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)" in Journal of Sustainable Development of Energy, Water and Environment Systems (2015). https://doi.org/10.13044/j.sdewes.2015.03.0017
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation
Batch adsorption experiments in the presence of oxygen were performed to study the interlayer reactions of aniline on Cu(II)-montmorillonite in aqueous solutions. At concentrations below a critical value of CC ) 2.6 mmol dm-3 only a colored Cu(II)-aniline complex is formed, characterized by a stability constant of log(Kassoc/dm3 mol-1) ) 1.5. At concentrations beyond Cc aniline polymerizes yielding a dark brown product, which is identified by two vibrational spectroscopy techniques, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and ...M. Ilić, E. Koglin, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation" in Langmuir (2000). https://doi.org/ 10.1021/la000534d
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Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal
Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)... should not be used as a household fuel” [12]. However, a relatively high amount of low-rank coal in addition to thermal power plants is used in households (for cooking and heating), particularly in Serbia, India, and China [13,14]. Numerous studies were performed on lignite pyrolysis as a method for its improved ...
... ons were carried out on lignite or bituminous coal having a low ash (4–12%, dry basis) and relatively high carbon content (62–84%, dry, ash-free bases) [33,35,36], not on low-quality lignite with a high ash content (>40%) and, consequently, a low calorific value (net calorific value <15 MJ/kg). Our ...
... lignite/HDPE co-pyrolysis as a possible method for utilization of lignite of extremely low quality (ash content > 40%; organic carbon content <30%). The objective was to examine and confirm the existence of a synergetic effect during low-quality lignite and HDPE co-pyrolysis, using a wide range of methods, ...Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović. "Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal" in Polymers, MDPI AG (2021). https://doi.org/10.3390/polym13050759
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470