Претрага

Упит dcterms_subject_txt:max-min composition

307 items

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)
    ... (e.g. attributes) that characterize some geological occurrence. The description tables of basic geological entities (mapped unit, lithology composition and geological structure) contain common attributes that specify the purpose and context of the description. The description purpose attribute ...

  • 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)
    ... of the soil max max i  , amounts: max1 1 10.6187; 0.2226; 3 0.6678S S    As there is max1 13S  , supposed 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; ...
    ... of convenience of the obtained functional correlation, the following relations are valid: - if it is max 3S  , the obtained functional correlation is rejected as unfavourable; - if it is max 3S  , the functional correlation is accepted as a good one. 4. REVIEW OF MASSIVE BLASTING AT "NEPRIČAVA" ...
    ... 5606; 0.2228; 3 0.6683S S    max 2 23S  , supposed functional relationship is accepted as a good one. 5. CONCLUSION To establish the relationship between the oscillation velocity of the rock mass and basic parameters affecting its magnitude, being: the amount of explosive, the distance ...

  • Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world

    Bogoljub Vučković, Bojan Dimitrijević (2023)
    The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...
    lignite, heavy metals, concentrations
    ... contents of heavy metals in the top soil of the mentioned cities in Serbia, Region, Europe and World are mainly a consequence of the geological composition and geochemical background of that region, as well as anthropogenic/industrial influence. REFERENCES: 1. Aguilera A., Bautista F., Gutierez-Ruiz ...

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... and the duration of the experiment should be 2–15 min. ISRM [18] suggested that the diameter of the specimen should not be less than 54 mm (ISRM), while the ratio of height and diameter should be 2.5–3:1, with the duration of the experiment from 5–10 min. According to the recommen- dations from previous ...
    ... Compressive Strength and Deformability of Rock Materials. Int. J. Rock Mech. Min. Sci. 1979, 16, 135–140. 19. Suggested methods for determining the strength of rock materials in triaxial compression. Int. J. Rock Mech. Min. Sci. Géoméch. Abstr. 1978, 15, 47–51. [CrossRef] 20. Brown, E.T.; Hoek, E. ...
    ... column of the exploration borehole. Test samples D and AD undoubtedly show the same structural-textural character- istics, as well as the mineral composition. Only the intensities of secondary alterations, calcification, limonitization, and chlorination are different (Figure 2). The analyzed rock material ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... compounds are fossil fragments of red algae (Lithotamnium ramisissimum; family Corallinaceae) (Fig.2e). The algal remains are micrite in composition with a well-developed and promi- nent mesh texture consisting: of micron-sized rectangle chambers. Fragments of some other species (diverse asso- ...
    ... Rudstone |0 Grainstone MB Brick Fig. 3 The results of the lithological mapping of rock types for south and north facades of the Dark Gate composition. Bioclasts include shallow water, macrofaunal remains, usually completely recrystallized and molds of microfauna as well as algal debris (Fig ...

  • Granatski amfiboliti Bistrice

    Jovana Opančina (2024)
    Predmet ispitivanja ovog završnog rada su granatski amfiboliti Bistrice. Izvršena su petrografska i hemijska ispitivanja s ciljem da se odredi stepen metamorfizma, protolit ispitivanih stena i P-T uslovi nastanka. Ispitivani granatski amfiboliti geografski pripadaju Prijepolju, tačnije nalaze se na ulasku u Prijepolje, mesto Bistrica. Geološka građa obuhvata uglavnom mezozojske tvorevine među kojima se nalaze sedimentne, magmatske i metamorfne stene. Geološki procesi koji su doveli do stvaranja amfibolita su procesi subdukcije i obdukcije koji su se pretpostavljamo dešavali na većim ...
    granatski amfiboliti, Bistrica, elektronska mikrosonda, polarizacioni mikroskop

  • Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG

    Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić (2024)
    CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING

  • Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    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 ...
    Grejanje, Analiza životnog ciklusa, Drvna biomasa, Individualni sistemi grejanja
    ... favorable feedstock energy because of their high calorific value, low ash content, and slagging rate [20]. The basic information and material composition of HSs are given in Table 2 [21], [22]. The materials mentioned in Table 2 form the bulk of the furnace’s weight (90%). Other materials that constitute ...

  • Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report

    Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić (2021)
    Landslides, Extreme precipitation, Data analysis, IPL project report

  • Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geološki, geofizički i hidrogeološki uslovi / Conceptual model of hydrothermal system of Brus area - geological, geophysical and hydrogeological condition

    Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)
    Na širem području Brusa izvedena su naučna multidisciplinarna istraživanja za potrebe ocene geotermalnog potencijala sa zadatkom de9inisanja uslova formiranja geotermalnih i termomineralnih resursa. Interpretacijom podataka zaključeno je da je na predmetnom terenu formiran "hibridni" hidrogeotermalni sistem, koji sadrži elemente sistema u rov-strukturi i elemente konvektivnog hidrogeotermalnog sistema sa rezervoarom u pokrivaču granitoidne intruzije. Sistem čine dva nezavisna hidrogeotermalna rezervoara. Prvi rezervoar formiran je u gornjokrednim krečnjacima na dubini od oko 1550 m. Maksimalne prognozne temperature hidrogeotermalnih resursa u krečnjačkom ...
    hidrogeotermalni sistem, gornjokredni krečnjaci, trijaski mermeri, Brus

  • Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance

    Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)
    Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography
    ... oceanic crust, 2) Middle and Upper "Triassic ribbon radiolarites, and 3) open marine limestones from the continental slope. On the basis of this composition we can conclude that the Upper Triassic radiolarite clasts derive cither from 1) the younger parts of the sedimentary succession above the oceanic ...
    ... and cvolution of oceanic volcanic rocks in the Central and Northern Balkans. Lifhos 108, I—4, 72—105. Zuffa G.G. 1980: Hybrid arenites: thcir composition and classifi- cation. J. Sediment. Petrol. 50, 21—29. Zuffa G.G. 1985: Provenance of arenites. D. Reide/! Publishing, Dordrecht, 1—408. GEOLOGICA ...

  • Хидрогеохемијске карактеристике и квалитет вода слива Требишњице, Република Српска, Босна и Херцеговина

    Dragoslav R. Banjak (2016-08-25)
    Упркос неповољном временском и просторном распореду, воде су најзначајнијиприродни ресурс Источне Херцеговине. Ова чињеница довела је до реализацијепројекта „Вишенамјенског хидросистема Требишњица“, којим је, премаМилановићу (2006), до сада обухваћено: седам хидроелектрана, шестакумулација, шест брана, шест тунела укупне дужине 59,7 km, неколикоприступних тунела, 62,5 km бетонског канала кроз Попово поље, канал крозДабарско (6750 m) и Фатничко поље (2770 m) и систем тунел-канал или цјевоводпрема Дубравама.У почетку са доминантним енергетским предзнаком, концепција јетрансформисана у интегрално рјешење вишенамјенског коришћења и заштитевода и животне ...
    хидрогеохемијски процеси, мултиваријантна статистичкаанализа, инверзно геохемијско моделовање, квалитет воде, употребиљивост водеза наводњавање, слив Требишњице
    ... chemical composition has a drain from accumulation Bileća, then the Sušica river, but the impact of the spring in Lastva is unsignificant. Chemical composition of the water in the river Trebišnjica catchment is a result of environment in which is formed, primarily lithological composition, rainfall ...
    ... quality, have not been made. The main factors which determine water chemical composition and their quality are relations rock-water, water regime, rainfall, antropogenic impact, geolocical structures, mineral composition of aquifer and their geological processes (Abreha, 2014). Mutual influences ...
    ... ска средина), Мед. (медијана), Мин. (минимум), Макс. (максимум), Опс. (опсег), Коеф. ас. (коефицијент асиметрије), Курт. (куртосис) Табела 9. Резултати описне статистичке анализе параметара хемијског састава вода у подсливу Сушице Параметри Ар.ср Гео.ср. Мед. Мин. Макс. Опс. Коеф. ас. Курт. pH ...

  • 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
    ... TANASIJEVIĆ M., IVEZIĆ D., JOVANČIĆ P., ĆATIĆ D., ZLATANOVIĆ D., 2013: Study of Dependability Evaluation for Multi-hierarchical Systems Based on Max–Min Composition. Quality and Reliability Engineering International, Vol. 29, No. 3, pp. 317–326. IVEZIĆ D., PETROVIĆ T., 2010: Robust IMC Controllers with ...
    ... М., IVEZIĆ, D., JOVANČIĆ, P., ĆATIĆ, D., ZLATANOVIĆ, D., 2012: Study of Dependability Evaluation for Multi-hierarchical Systems Based on Max–Min Composition. Journal of Quality and Reliability Engineering International, Vol. 29 (3), pp. 317–326, DOI: 10.1002/qre.1383 MIODRAGOVIĆ, R., TANASIJEVIĆ ...
    ... TANASIJEVIĆ M., IVEZIĆ D., JOVANČIĆ P., ĆATIĆ D., ZLATANOVIĆ D., 2013: Study of Dependability Evaluation for Multi-hierarchical Systems Based on Max–Min Composition. Quality and Reliability Engineering International, 29 (3), 317– 326. TANASIJEVIĆ M., IVEZIĆ D., JOVANČIĆ P., IGNJATOVIĆ D., BUGARIĆ U., ...

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • Design of a sucker rod pumping system

    Ana Ponoćko (2024)
    For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...
    sucker rod pump, fluid production, mechanical extraction methods,, Prosper, QROD, RODSTAR
    ... CounterWeight Positon,0.63444. m - | |_Pump Intake Pressure D F·:tnr} 176092 ___| Method Stress (Max) 659.216 |bar | Calculated From IPR. Stress (Min) 290.254 – |bar Calculated From Fluid Level Stress (Max Alowable) 2145.51 - |bar Torsional Effectiveness (ITE), 13.6466 percent Intake Pressure | ...
    ... Goponivar: n (Min. Energy)_(Min Torq) Fuudsp.araviv: | 0.9953 NEMA D motor: 3HP 3HP compress.index: 30 Single/double cyl. engine: 3HP 3HP Multicylinder Engine: 3HP 3HP Pumping Unit:MRZ K-5 Torque analysis and electricity BBALANCED API Size:C-119-112.59 (Unit ID CUSTOM) (Min.Energy) (Min Torq) OOO ...
    ... OOO G — !MA ? 4 inQ: Crank rotation with well to right: CCW koad : 1,444 1,337 Max. cb moment (N-m): 744155 | 8533,54 Max. cb moment (N-m): Unknown Counterbalance effect(N}: 16935 19411 Structural unbalance (N): 63 Daih electr.use (Kwh/Day): 22 23 Crank offset angle (degrees): 00 Monthly electric ...

  • Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication

    Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović (2023)
    Ammonites, Taxonomy, Lower Berriasian, Getic, Northern Tethys, Serbia
    ... Pseu- dosubplanites as one of the starting elements of the newly emerging, family Neocomitidae. This concept is also accepted here. Species composition and their detailed characterisation have been recently mainly addressed by Arkadiev and Bogdanova (2012) and Hoedemaeker et al. (2016). The latter ...
    ... sequence is topped by the Grandis Zone. The following succession characterises the studied section, Ded- ina, in terms of ammonite species composition. At the beginning of the section,in itslowest part, there is a single specimen of Hegaratella oxycostata. The first 12 following layers contain ...
    ... 'Z EC 9S OI (E CO Z) IS I lU O4 DO SO y Sn O0 0D lO RD Z. Vašiček, D. Rabrenović, P. Skupien et al. the genera and species composition of ammonites, the association described here appears to be close to the ammonite association in Crimea. 7. Conclusion According, to a preliminary ...

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... The materials will be supported by electronic terminological resources, as well as services, and search and browse functionalities. Given the composition of the project partners the platform will be initially populated by materials from the domains of ICT, geoinformatics, mining and environmental ...

  • Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

    Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)
    γ-spectrometry, brushite, chukhrovite, phosphogypsum, radionuclides, recrystallization
    ... X-ray diffraction measurements Mineralogical composition was determined using a Philips PW 1710 automated diffractometer, using: Cu-Ko: radiation (, = 1.54184 A) on randomly oriented powders in the range 4-60%0 with a scanning step of 1* min ". The tube current was set to 30 mA and the voltage ...

  • Петрологија црвених пешчара источне Србијe

    Андреј Марковић (2024)
    У источној Србији формација црвених пешчара има велико распрострањење и улази у састав многих планина овог дела наше земље. Формацију чине кластичне стене интензивно црвене боје псамитске, ређе псамитско-псефитске структуре и алевритске структуре. Ове стене леже трансгресивно преко старијих пермо-карбонских и карбонских стена, док навише прелазе у доњотријаске седименте. Формација црвених пешчара захвата два појаса унутар Карпато-балканида – унутрашњи и средишњи део. Узорци анализирани у овом раду део су средишњег појаса. Тема завршног рада је петрологија црвених пешчара источне ...
    источна Србија, црвени пешчар, петролошко-минералошке карактеристике, аркозе
    ... nempojouwko-MuHepaaouuke kapakmepucmuke, apko3e. ABSTRACT Red sandstone formation in Eastern Serbia is widespreaded and is included in the composition of many mountains in this part of our country. This formation consists of intensely red-colored clastic rocks, psammitic, rarely psammite-psephitic ...

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)