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Упит dcterms_creator_txt:Bechtel A.

1504 items

  • Еоценска фауна југозападног дела Сирт басена (Либија)

    Љупко Рундић, Мери Ганић (2020)
    Еоцен, крупни мекушци, нумулити, ЈЗ Сирт басен, Либија

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused energy source in Serbia, while data about the potential of this energy source are lack- ing. This research proposes a methodology ...
    ... systems were identified: (a) Heat pump placement into the existing network without major changes, (b) heat pump placement in an expanded network, (c) deep refurbishment of the existing district heating system, and (d) the design of a new district heating system supplied by a heat pump. By implementing ...
    ... provides a possibility for the estimation of the technical potential of wastewater heat for cities without WWTP. This information can be valuable in the preparation phase and WWTP loca- tion selection. In this paper, the proposed methodology was applied for Serbia as a case study, assuming a scenario ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... substances (450 mg·m2·day), in Drmno (a settlement in the immediate vicinity) emission limit values (ELVs). 3. Project Management Process for Improving Environmental Protection by Applying a Network Planning Technique The management of a mining and energy complex has a duty to promote the environmental ...
    ... mass concentration of sulfur dioxide, presented in the Reports on emission tests, measured in flues of TPP “Kostolac A” block 1, boiler 1; TPP “Kostolac A” block 1, boiler 2; TPP “Kostolac A” block 2; TPP “Kostolac B”, block 1; and TPP “Kostolac B”, block 2, indicate that the recorded values were higher ...
    ... effects of coal mining and combustion on environmental quality. Risk is a function of risk event probability (P) and the measure of loss (L) it inflicts: R = f(P, L) (1) Energies 2016, 9, 1071 6 of 20 Actualization of a risk event in a mining and energy complex leads to heavier or smaller economic loss ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... 2012 Abstract Volume, p. 206, Geologische Vereinigunge. V. Hamburg, 2012. NEUMEISTER S., BANJAC N., BECHTEL A. & GAWLICK H.-J., 2013. Source rock investi- gations and organic geochemistry of a cretaceous succession of the outer Dinarides (Mokra Gora, Tara Mountain, SW Serbia). Berichte der Geologischen ...
    ... Todorović K., Vasović N., Burić N.: Persistence and failure of mean-field approximations adapted to a class of systems of delay-coupled excitable units, Physical Review E, 2014. 297. Životić D., Bechtel A., Sachsenhofer R., Gratzer R., Radić D., Obradović M., Stojanović K.: Petrological and organic ...
    ... from apatite and zircon fission track and vitrinite reflectance data. Geologica Carpatica, 66, 37–50. doi: 10.1515/geoca-2015-0009 ŽIVOTIĆ D., BECHTEL A., SACHSENHOFER R., GRATZER R., RADIĆ D., OBRADOVIĆ M., STOJANOVIĆ K., 2015: Reprint of „Petrological and organic geochemical properties of lignite ...

  • EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School

    Milan Dojchinovski, Julia Bosque Gil, Jorge Gracia, Ranka Stanković (2021)
    Prva škola za obuku polaznika koju je organizovala COST akcija NexusLinguarum održana je od 8. do 12. februara 2021. godine sa ciljem da studenti, istraživači i stručnjaci nauče osnove lingvističke nauke o podacima. Tokom obuke polaznici su se upoznali sa širokim spektrom tema: od semantičkog veba, RDF -a i ontologija, do modeliranja i pretraživanja jezičkih podataka pomoću najsavremenijih ontoloških modela i alata. Škola je održana u okviru serije letnjih škola EUROLAN-a i organizovalo ju je virtuelno (onlajn) nekoliko instituta; ...
    nauka o lingvističkim podacima, povezani podaci u lingvistici, jezički podaci, EUROLAN, NexusLinguarum, COST akcija, škola za obuku
    ... September 2021 Professional paper a chance to acquire a solid foundation before moving onto more complex sessions. The official program of the school is available online.13 As a follow up, the JeRTeh14 Language Resources and Technologies So- ciety set up a local installation of VocBench15 and, apart ...
    ... school ended with a closing session where an ontology of participants, lecturers and organizers was presented, illustrating many of the representation mechanisms explained throughout the week. Figure 1. Ontology of the training school. . Each of the organized sessions was accompanied by a hands-on session ...
    ... proposed an exercise and offered a step-by-step walk-through for the participants to understand the methodology leading towards the solution. They also intro- duced the basic technology needed. Then, during the exercise session, the participants were asked to work on a particular task like the cases presented ...

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

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... p p e r C a m p a n ia n -L o w e r M a a st ri c h ti a n 2 S tr u g an ik lo w er q u ar ry 4 2 6 3 – 2 7 2 4 4 � 1 1 0 2 5 00 2 0 � 0 6 0 1 7 00 L im es to n es g re y is h 1 0 /1 0 2 2 2 .2 2 4 9 .7 6 0 6 .3 2 0 9 .3 2 4 9 .1 6 0 6 .3 3 0 9 /1 1 U p p e r C a m p a n ia n -L ...
    ... -L o w e r M a a st ri c h ti a n 3 B re žd je 4 2 9 9 – 3 1 3 4 4 � 1 0 0 5 7 00 2 0 � 0 4 0 1 4 00 M ar ly li m es to n es g re y is h -w h it e 1 4 /1 5 2 3 0 .3 2 3 9 .4 7 8 4 .5 2 1 9 .7 2 3 2 .6 7 8 4 .5 3 4 0 /1 6 S a n to n ia n 4 V ra će v šn ic a 4 3 1 4 – 3 2 5 4 4 ...
    ... V ar ia b le U p p e r C a m p a n ia n 7 T o li ć q u ar ry 4 0 1 5 – 0 2 2 4 4 � 1 3 0 1 4 00 2 0 � 2 8 0 4 3 00 L im es to n e R ed 8 /8 3 5 9 .9 * 5 8 .0 * 2 7 1 3 .4 3 5 0 .1 4 6 .2 2 7 1 3 .4 3 2 2 /1 4 U p p e r C a m p a n ia n 8 L ip o v ic a q u ar ry 4 2 0 1 – 2 2 5 ...

  • Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia

    Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)
    Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...
    Geothermal assessment, Mineral deposit exploration, Geothermal potential, Serbia
    ... reservoir. A review of existing documentation was conducted, and relevant data were stored in a dedicated database. Three main groups of base data were compiled: geological, hydrogeological data and geothermal indicators. Data (point, line, polygon, raster) were spatially analyzed in a GIS environment ...
    ... including the basin margins, where Mesozoic and Paleozoic sediments outcrop on the surface. 7,410,000 7,412,000 7,414,000 „420, a w 7,424,000 7,426,000 7,428,000 7,430,000 » A NZ ELB drillhole 4, 91 0, 00 0 Water temperature *C 11 - 20 e 21-30 e 31-40 4, 90 8, 00 0 Cross section line ...
    ... spread in E-W direction with a maximal thickness around 900 m in central parts. The tectonic framework comprises older NE-SW and NW-SE faults, later overprinted with major E-W normal faults. Although the tectonic setting: of the basin is complex, the ore body zone is situated in a relatively undisturbed ...

  • Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine

    Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina (2015)
    ... the amount of explosive, a distance from the blast site, characteristics of the rock material and a type of blasting, the equation of M.A. Sadovski, where the oscillation velocity v is given in the form of the function, is most frequently used: nv K R  where R is a reduced distance, and K ...
    ... functional relationship is accepted as a good one. For model 2: 2 0.7782  - there is a strong correlation between R and v, given in the formula (14). max 2 2 20.5606; 0.2228; 3 0.6683S S    max 2 23S  , supposed functional relationship is accepted as a good one. 5. CONCLUSION ...
    ... the equation of M. A. Sadovski that is used most commonly. In this paper, the law of Sadovsky is derived using the quotient of the relationship between relative growth of oscillation velocity of the rock mass and relative growth of reduced distances. Thereby, in a marginal case, a differential equation ...

  • Data from the Digital Repository of the Faculty of Mining and Geology in eScience (eNauka)

    Biljana Rujević, Mihailo Škorić (2024)
    The paper describes linking the Digital Repository of the University of Belgrade, Faculty of Mining and Geology, with the eScience system in terms of transferring metadata about the results of researchers' scientific work. The steps taken to ensure a smooth harvesting of metadata are outlined. Additionally, a presentation of additional improvements to the OAI system is provided, aiming to contribute to the automatic linking of authors with their results in the eScience system.
    репозиторијуми, еНаука, метаподаци, Рударско-геолошки факултет

  • Konzervacija miocenskih kičmenjaka sa lokaliteta Riđake (severozapadna Srbija) iz zbirke Prirodnjačkog muzeja u Beogradu

    Nenad Mladenović (2024)
    U radu je opisana geološka građa terena i metode koje se koriste u paleontologiji za izdvajanje, konzervaciju i restauraciju fosilnog materijala sa lokaliteta Riđake kod Šapca. Prikazana je anatomija fosilnih kičmenjaka. U prosejanom sedimentnom materijalu težine od 4kg pronađeno je 10,798 kostiju, uključujući ostatke Pisces (riba) Amphibia (vodozemaca), Reptilia (gmizavaca), Aves (ptica) i Mammalia (sisara).
    geološka građa, konzervacija, restauracija, Riđake, fosili kičmenjaka
    ... (VODOZEMCI) .. 15.3 KLASA REPTILIA (GMIZAVCI).. 15.4 KLASA AVES (PTICE) 15.5 KLASA MAMMALIA (SISARI) altynaaa a a a a a a iii ii a iii aaaaaaa dtaaaRaıı 16. ZAKLJUČAK ..........aaaaaa a aeaaaeaaeaaeaaaeaaaeaaeaaeaeagaaeaeaaaaeeaeageaaaeageaeveaaaaeaeeeaaaaeabaateee 47 1. UVOD U radu je predstavljena ...
    ... većinu terena, a jezerski sedimenti su se formirali kroz različite procese sedimentacije. Starije i mlađe jezerske terase su identifikovane na različitim nadmorskim visinama, a sedimentacija je povezana sa paleotokom Drine. Ovi slojevi su bogati alevritskim peskovima i glinama, a njihova debljina ...
    ... ll L lj LJ Ta l la R a R l a l Slika 19 - Primer lepljenja fosilne kosti iz Ušačke pećine (Col.yII 85/159). Sredstva za lepljenje uključuju gumirabiku, tutkalo, sintetikon, karbofiks, momentfix i Paraloid B72 u granulama, odobrene od strane UNESCO-a za restauraciju fosilnog materijala ...

  • Quantitative landslide risk assessment in the city of Tuzla

    Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović (2021)
    In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...
    "landslides", "risk assessment"
    ... the actual motivation for a detailed study was the 2014 massive flooding and landslidng event that affected the entire region (Fig. 3). More than 500 mm was precipitated in less than a month and a half, which is more than 6 months’ worth of rainfall in normal conditions. A detailed landslide risk ...
    ... probability exceedance, appending zones of their increased temporal probability for a given return period, and finally, estimating which elements at risk these exceeded probabilities can affect and at what level. In this work, a practical case is represented to illustrate all these steps and demonstrate ...
    ... underground and open pit mining, which has a long tradition in Tuzla. However, the main motive for considering this case study lies in severe landslidng episode triggered during the heavy rainstorm in mid-May 2014. The landslide inventory was compiled by a combination of historic and post-2014 field ...

  • Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining

    Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... 5 of 16 1 1 1 2 1 n 11 12 1n 1 1 2 2 2 n 21 22 2n n 1 n 2 n n n1 n2 nn w /w w /w ... w /w a a ... a w /w w /w ... w /w a a ... a M= = ... ... ... ... ... ... ... ... w /w w /w ... w /w a a ... a                         (2) The fourth and final step in the AHP method ...
    ... conditions for a partial analysis of each criterion, which are analysed in a very simple way. In that way the method can be adapted to the conditions in a given open-cast coal mine. By making the changes in the weight coefficients of the basic parameters, an analysis of the susceptibility to a desired criterion ...
    ... conditions for a partial analysis of each criterion, which are analysed in a very simple way. In that way the method can be adapted to the conditions in a given open-cast coal mine. By making the changes in the weight coefficients of the basic parameters, an analysis of the susceptibility to a desired criterion ...

  • Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction

    Velislava Stoykova, Ranka Stanković (2018)

  • Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina

    Dragoslav Rakić, Nikola Božović (2024)
    U sklopu prve deonice autoputa E-80 Niš – Merošina, izgrađen je nadvožnjak u zoni sela Balajnac koji je oslonjen na tri stubna mesta na međusobnom rastojanju od oko 26 m. Svaki stub je fundiran na šipovima i to sa predloženim rasporedom od 2 šipa u grupi na međusobnom rastojanju od 3.6 m. U radu su na osnovu izvršenih geotehničkih istraživanja terena, analizirani rezultati nosivosti vertikalno opterećenog šipa prečnika 1.2 m i dužine šipa od L = 23 m. Analiza ...
    nadvožnjak Balajnac, šip, probno opterećenje šipa, projektni pristup, granična stanja

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

    Горана Остојић (2024)
    Рад се бави анализом и проценом емисија гасова са ефектом стаклене баште, са посебним акцентом на емисије које настају као последица енергетских активности. Ефекат стаклене баште представља природни процес који је неопходан за одржавање живота на Земљи, али антропогене активности, попут индустријске производње и сагоревања фосилних горива, значајно повећавају концентрацију ових гасова у атмосфери, што доводи до климатских промена. Рад истражује узроке, последице и могућности за смањење емисија гасова, као и развој стратегија за ублажавање негативних ефеката на животну ...
    емисија гасова, ефекат стаклене баште, енергетске активности, климатске промене, мобилно сагоревање, стационарно сагоревање
    ... engaged in mtemational transport(1 A 3 a ı and 1 A 3 d i)should as far as possible be excluded from the totals and subtotals m this category and should be reported separately. 1A3 1A3 1A3 8 |Civil Aviation a Jnternational viation (Inernational Bunkers}) a il Domestic 4viation Emissions ...
    ... anaTuH 3a IIpoHIecHy CMHCHJE ..aaaaaaaaaaaaa a 33 2.4. IIomarHKe H crparerHje 3a cMaPbePbe eMHcCHJe racoBa e(DbeKTa CTaKJIČHC OaITČ a anaaaaaanaaaaaagaaaaaaeaaaaaobavatt 36 3. CTALHOHAPHO CAT OPEBAĐE .........anaaa a 39 3.1. Meronomoruja .....aaaaaaaa a aanaaoaaaiaotiaotataoatttNtt 40 3.1.1. Odnmyke ...
    ... activities m airports and harbours, and off- road activities not oferwise reporied umder | A 4 c Agrculture or | A 2, Manufacturing Industries and Construction. Military transport should bc reported under | A 5 (see | A S Non-specified), 'Combustion related emissons from the operaton of pump stations amd ...

  • Геолошке карактеристике лежишта нафте која се експлоатишу еруптивном методом

    Милица Милићевић (2024)
    Геолошке карактеристике специфичних лежишта утичу на различите начине на ефикасност еруптивне методе. Најзначајније геолошке карактеристике које делују на еруптивну методу јесу порозност, пропусност, тип лежишта, резервоар стијене, као и тип замки. Еруптивна метода подразумјева коришћење природног притиска ради лакше експлоатације нафте и гаса из резервоара. У завршном раду су приказани различити типови лежишта и њихове геолошке карактеристике, као и предности и недостаци еруптивне методе код истих.
    слојна лежишта, масивна лежишта, зонарна лежишта, геолошке карактеристике, еруптивна метода
    ... jemHauuge (17) a (18) a Crmaky 14, onpebyje ce epnKacHocT uumhema roBpimaHe EA 3a cBaky BpHJeJIHOCT fw2. S w e e p el li ci en cy , % 2.0 Reciprocal mobility ratio, 1/M 40 60 8.010 Cauka 14. no0ujambe EA (Tarek, 1946). E,_ı (17) _ 1+4 A = {a, In(M + a») + asalf, + a,ln(M + as) + a6 ...
    ... b)TEKTONSKIEKRANJ a)ZASVOĐENA b) STRATIGRAFSKI EKRAN a) LITOLOŠKI EKRAN š # | SLOJNA š LEŽIŠTA i Š '3 1. LEŽIŠTA SA TEKTONSKIM TRAPOM 2. LEŽIŠTA SA MORFOLOŠKIM TRAPOM (UZVIŠENJA, MASIVI.....) |- a) ZASVOĐENA b)TEKTONSKI EKRAN| a)DISJUNKTIVNOG b) EROZIONOG c) BIOGENOG d) KOMPAKCIONOG š POREKLA ...
    ... CJIO)KCHHM TpaHOM. TakBe 3aMKe Cy cpa3MJepHo uecTe, a KaO IPpHMJep ce MOTy HaBeCTH CJIyuajeBH Kajia Je JeKHIHITC y JeJ(HOM JHjeJTy eKpaHH3OBaHO PpacJeJIOM, a y JIDyTrOM HCKJIHHbeMbeM, KaO H OHH KaJla je megxumre BehHMHOM 3aTBODpeHO KOMIAKIMOHMM CBOMOM, a y Jjemy je eKpaHH3OBaHo pacjeJloM (Kocrh, 2020) ...

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... for parameter A, we will take the arithmetic mean value of parameters Ai: A = 1 N · N ∑ i=1 Ai. (36) If the value of parameter A obtained according to Equation (36), is replaced in the Equation (33), we will obtain the value of parameter B. Based on the obtained values of parameters A and B and c ...
    ... Equation (27) becomes: y + 3 = Ax + ST xN − x1 − A(xN + x1) 2 , (37) i.e., equation: logv + 3 = AlogR + ST xN − x1 − A(xN + x1) 2 , (38) where from we obtain: logv = AlogR + ST xN − x1 − A(xN + x1) 2 − 3. (39) If we put that: ST xN − x1 − A(xN + x1) 2 − 3 = logK, (40) Equation (39) maybe ...
    ... 1. Introduction When the seismic wave comes across a certain point in the rock mass, it then disturbs the balance of rock mass particles at that point. The particles oscillate around their balance position for a certain period until they return to a complete standstill. Oscillation of the rock mass particles ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • Tektonska evolucija istočne periferije timočke eruptivne oblasti

    Stefan Zujić (2024)
    U radu su predstavljeni rezultati proučavanja tektonskih i litostratigrafskih karakteristika istočnog oboda Timočke eruptivne zone. Zaključci o geološkim odnosima u okviru Timočke eruptivne oblasti i susednih geotektonskih jedinica izvedeni su na osnovu podataka prikuljenih tokom terenskih istraživanja i podataka dobijenih iz publikovanih radova. Rezultati rada ukazuju da je teren koji je bio tema ovog istraživanja, u strukturno-tektonskom smislu oblikovan tokom glavnih geodinamičkih događaja u okviru Karpato-balkanskog orogenog luka. Analizom strukturnog sklopa su utvrđeni glavni deformacioni događaji koji su predsavljeni ...
    tektonska evolucija, timočka eruptivna oblast

  • A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)

    Aleksandar Tanasković, Vesna Ristić Vakanjac, Dušan Polomčić, Jelena Ratković (2023)
    A sufficiently long time-series of daily discharges is needed to assess the discharge dynamics and calculate the water balance equation parameters of a spring (river source). The paper assumes that a catchment is gauged if a time-series of observations of at least 30 years is available, which is a rare case in Serbia. One-year monitoring is often set up to verify the reserves of a water source or spring intended for capture. Monitoring ceases after the final report is ...
    discharge dynamics, water balance, catchment area, karst spring Gornji Dušnik, Suva Planina