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Упит dcterms_subject_txt:Otoliti in situ

1758 items

  • Water in the Alluaudite Type-Compounds: Synthesis, Crystal Structure and Magnetic Properties of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H,□)0.5(H2O,H3O)0.5]2x+

    Tamara Đorđević, Ljiljana Karanović, Marko Jagodič, Zvonko Jagličić (2021)
    In this study, a new cobalt arsenate belonging to the alluaudite supergroup compounds with the general formula of Co3(AsO4)0.5+x(HAsO4)2−x(H2AsO4)0.5+x[(H, )0.5(H2O,H3O)0.5]2x+ (denoted as CoAsAllu) was synthesized under hydrothermal conditions. Its crystal structure was determined by a room-temperature single-crystal X-ray diffraction analysis: space group C2/c, a = 11.6978(8), b = 12.5713(7), c = 6.7705(5) Å, b = 113.255(5)◦, V = 914.76(11) Å3, Z = 2 for As6H8Co6O25. It represents a new member of alluaudite-like protonated arsenates and the first alluaudite-like phase ...
    супергрупа алуаудита, арсенати прелазних метала, хидротермална синтеза, кристална структура, хидратисани хидрокси-арсенати, стехиометрија, магнетна својства

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... authors 3,4,5,6 Two places where coal homogenization can be conducted are at the mine site and at the stockyards 2. Homogenization of coal in mine site can be achieved at: - mining block (production of one excavator on one bench), - the connecting conveyors (production of all excavator on ...
    ... different benches). For the management of the coal homogenization process at the mining block level is especially important to have enough of in situ data, and to conduct quality operational planning. The importance of operational planning for coal quality control is stressed by Stevanović ...
    ... Coal quality control is complex and comprehensive problem which depends of many factors and elements of production system: - geological in situ data should be credible and with sufficient amount, - geological model should provide realistic interpretation of real structural a qualitative ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... Detailed information about a mine site are shown in a separate page and are grouped into the following sections: general data, properties, registry, owner (stakeholder) and multimedia. A small dynamic map of the surrounding area of the selected mine site with a zoom in possibility is shown with textual ...
    ... where D is the distance of the mine site from the nearest waterway (river, lake, stream), min/max are minimal and maximal distances in the dataset; Population_500m_Score = Pop ˆ 100/max_500 m., Pop is the population living in diameter of 500 m from the current site, max_500 m is maximal population at ...
    ... degraded surfaces area, waterway distance and population in the range of 500 m: Surface_Score = (P ´ min) ˆ 100/(max ´ min), where P is the degraded abandoned area of the current site, min/max are minimal and maximal value for degraded abandoned area in the dataset; Waterway_Distance_Score = (100 ´ (D ´ ...

  • Hydrodynamic analysis application of contaminated groundwater remediation to oil hydrocarbons

    Predrag Pajić, Aleksandar Čalenić, Dušan Polomčić, Dragoljub Bajić (2018)
    U ovom radu sagledana je primena hidrodinamičke analize u okviru odabrane remedijacione metode ,,pumpanja i tretiranja” kontaminiranih podzemnih voda ugljovodonicima, na primeru pretakališta rafinerije nafte u Pančevu. Primenjena hidrodinamička analiza predstavlja pravilan, a sve češće i neophodan pristup u savremenoj hidrogeologiji. Prethodnim hemijskim analizama uzoraka tla i podzemnih voda na istražno-osmatračkim objektima detektovano je zagađenje produktima nafte. Novoizvedena istraživanja obuhvatila su izvođenje 12 pijezometara različitih dubina, geoelektrično sondiranje tla, ,,in situ” merenja prisutnog kontaminanta, izdvojenog kao hidrofobna faza LNAPL, ...
    kontaminacija, matematički model, podzemne vode, remedijacija, ugljovodonici

  • Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)

    Ljiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • First paleomagnetic and magnetic anisotropy results from Montenegrо - the coastal area

    Emö Márton, Vesna Cvetkov, Martin Đaković, Vesna Lesić, Slobodan Radusinović (2021)
    ... tuffitic layers in the Ladinian. The uppermost unit is theHigh Karst zone developed in a carbonate platform environment from the Middle Triassic till theend of the Cretaceous. In this unit flysch sedimentation started after the K/T boundary.From the above units we drilled and oriented in situ a total of 248 ...
    ... paleomagnetic directions. The AMS fabrics must have been imprinted in aNE-SW oriented compressional strain field, which resulted in moderately strong fabrics with NW-SE oriented AMS lineations, perfectly following the Dinaridic trend recognized in Croatia. Onelocality, the only one with moderate tilt and rather ...
    ... are not dealing with“real” paleomagnetic directions, but maybe with magnetic anisotropy governed NRMs.The rocks in the Budva zone show a large variation in lithological sense as well as in their magneticproperties. Except a Pietra Verde localitiy, the magnetic susceptibilities are weak, we can notdefine ...

  • Novi pristup proučavanju tekstura minerala značajnih za istraživanje rudnih ležišta

    Aleksandar Pačevski (2022)
    ... fuzzay MCDM Methods for Engineering- geological Surveys Katarina Bradić Milinović, Otoliti in situ sa teritorije Srbije (stratigrafski, paleockološki i paleogeografski značaj) Katarina Bradić Milinović, Otoliths in sifu from Serbia (stratigraphic, paleoecological and paleogeographical significance) ...
    ... its peak in the middle and second half of the XX century, where the contribution of Paul Ramdohr (1890-1985) to this development should certainly be emphasized. In last decades, the development of many sophisticated methods of microprobe analysis (in-situ) has enabled a further shift in the study ...
    ... it was found that only copper is structurally bound in this mineral, while other impurities (Pb, As and Ag) form finely dispersed nanometer grains of other minerals which were actually subsequently deposited filling the nano-pores in pyrite. In this way, copper-bearing pyrite is well defined and ...

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... same “in Minerals 2021, 11, 564 9 of 17 situ” conditions that exist in the process of the coal mining in this deposit. The influence of water and mining depth is defined in terms of external loads so that the surrounding (confining) pressure value is constant and that it acts uniformly in all directions ...
    ... and cutting resistance per unit of slice cross-sectional area, KA, especially in the water under different hydrostatic pressures (250–600 kPa), Minerals 2021, 11, 564 4 of 17 in laboratory conditions simulating the “in situ” working conditions (depth) of mining, i.e., cutting. 3. Geological Settings ...
    ... laboratory research tests were initially modified to provide reliable data of cutting resistance, especially in the water under different hydrostatic pressures, fully simulating the “in situ” working conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction ...

  • Conversion of land areas after coal mine closure and reclamation

    Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić (2023)
    Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.
    rekultivacija, melioracija, revitalizacija, otkopavanje uglja, održivi razvoj
    ... panels in Boortai Coal Mine in China (left) [11], solar plant in Klettwitz former open pit mine, Brandenburg, Germany (right) [12]. 256 Figure 3. Using solar and wind energy on recultivated site - Photovoltaic panels in Boortai Coal Mine in China (2022) on left side, solar plant in Klettwitz ...
    ... to choose the type of re-use of the land affected by coal exploitation in the Kostolac Basin, taking the important principles of ecological planning. 2.1 Study area The location "Drmno" is an external tailings disposal site from PK "Drmno". The maximum length is 2 km, width 1.2 km and height 50 ...
    ... operation lifecycle of the coal mine and portions of the site can be used for renewable power production. The application of solar PV systems provides an opportunity for an alternative revenue source. Equally important is that obtaining licenses to operate in the coal mine rehabilitated land may get easier ...

  • Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)
    ... Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Session: V009: Focused Observations of Ridge Near-Axis Remote and In Situ Investigations: Magmatic, Volcanic, Hydrothermal and ...
    ... documented eruption. The depression 1) is underlain by the gap in the deeper axial magma body that was suggested to feed the eruption; 2) its most prominent northern part underlies the deepest portion of the axial summit through mapped in bathymetry, resembling caldera collapse ubiquitously reported ...
    ... interpreted as diking events induced by tectonic forces leading to the eruption. In addition to the depression, based on the close correlation between the topography of the magma body and expression of the faults in the seafloor, we infer that the inward facing near-axis faults penetrate deep into ...

  • Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)

    Pavle Tančić, Aleksandar Kremenović, Predrag Vulić (2019)
    In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...
    grandite, XRPD, crystal structure, structural dissymmetrization

  • Flyrock induced by blasting in surface mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća

  • Praktikum iz kvaliteta podzemnih voda

    Jana Štrbački (2022)
    kvalitet podzemnih voda, praktikum

  • P-T analiza RMU Bitola – krupne klase

    Nemanja Dobrosavljević (2024)
    Cilj ovog diplomskog rada je bio ispitivanje mogućnosti i tehnologije čišćenjauglja, kao i predstaviti rezultate pliva – tone analize koja ima za cilj ocenu mogućnosti čišćenja uglja - krupnih klasa posmatranog uzorka. Da bi se ispitivanje i analiza mogućnosti čišćenja rovnog uglja u REK Bitola uspešno priveli kraju, moralo se uraditi uzorkovanje reprezentativnog uzorka iz koga se potom izdvaja prvi deo koji služi za određivanje sadržaja vlage. Pored tog dela iz uzorka se izdvaja i drugi njegov deo koji će ...
    ugalj, lignit, Bitola, PT analiza, pliva-tone analiza, čišćenje uglja, suvi ugalj, vlažan ugalj, pepeo, donja toplotna moć, čist ugalj, jalovina, bilans
    ... lučna sita sa otvorima od 0,5 mm. Odsev lučnih sita ide na dalje otkapavanje na vibro sitima a prosev se vraća nazad u bubanj kao suspenzija. ROVNI UGALJ -100+0 mm BUBANJ SA AUTOGENOM SUSPENZIJOM NAT) ČUJAL) | VIBRO SITO VIBRO SITO {a = 10 mm) {a = 5mm}) == = (-) - (* J VIBRO SITO HIDROCIKLON ...
    ... obavlja čišćenje uglja u autogenoj suspenziji. Potom na vibro sita (otvor prečnika 5 mm) iz bubnja izlaze lake frakcije (zajedno sa suspenzijom). Sito (poz. 7) za prosejavanje može biti projektovano i kao ”tromel” varijanta sita i to sito se može integrisati kao sastavni deo bubnja. Sa druge strane ...
    ... koja je otkapana na vibro situ (poz. 17). 38 Drugi deo vibro sita (poz. 7 i 12) poseduje “Rima” prosevnu površinu sa otvorima prečnika 0,5 mm. Na tim sitima se vrši pranje kako krupnog tako i sitnog uglja gde se dobija oprani krupni ugalj klase krupnoće -60+5 mm (sito poz. 7) i oprani sitan ...

  • In-vitro ispitivanje interakcija dva strukturno slična Rh(III) kompleksa Šifovih baza sa HSA/DNK i molekulski doking

    Aleksandar Mijatović, Ljubica Bacetić, Nikola Pavlović, Dušan Ćoćić, Milan Nikolić, Aleksandar Lolić, Rada Baošić (2021)
    Kompleksi metala sa tetradentatnim Šifovim bazama ispoljavaju različitu biološku aktivnost, što omogućava ciljne sinteze novih biološki aktivnih jedinjenja. Proučavane su interakcije H[Rh(acac2en)Cl2] (1) i H[Rh(phacac2en)Cl2] (2) sa humanim serum albuminom (HSA) i sa DNK, primenom fluorescentne i UV-Vis spektroskopije (298 K, pH 7,4). Dobijene su relativno visoke vrednost dinamičke konstante vezivanja (Ksv) i to 3,88·104 M-1 za (1), 7,02·104 M-1 za (2), što ukazuje na značajno vezivanje za HSA. Izračunate konstante unutrašnjeg vezivanja (Kb) su: 2,87·105 M-1 ...

  • 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)
    ... radius of the charge r0 and the distance from the blast site to monitoring point r increase in the same or approximately the same ratio, the soil oscillation velocity v remains the same. Sadovskii equation, given in Equation (1) may be expressed in the form [7]: v = Kv· ( r0 r )n (3) which denotes: ...
    ... radius of the charge rg and the distance from the blast site to monitoring point r increase in the same or approximately the same ratio, the soil oscillation velocity v remains the same. Sadovskii equation, given in Equation (1) may be expressed in the form [7]: T\n 2=K-(") 9 which denotes: v—the velocity ...
    ... blast site, characteristics of the rock material and the type of blasting, the equation of M.A. Sadovskii, where the oscillation velocity v is given in the form of the function, is most frequently used: v = K·R−n, (1) here R represents reduced distance, meaning the distance from the blast site to the ...

  • Nonequilibrium athermal random-field Ising model on hexagonal lattices

    Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević (2021)
    Изингов модел, хексагонална решетка

  • Some models for determination of parameters of the soil oscillation law during blasting operations

    Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić (2018)
    ... from the blast site, characteristics of the rock mass and the type of blasting, is the equation of M. A. Sadovskii that is used most commonly. In the paper, the law of Sadovskii is also derived in another way by using the quotient of the relationship between the relative increase in oscillation velocities ...
    ... blast site, characteristics of the rock material, and the type of blasting, the equation of M.A. Sadovskii, where the oscillation velocity v is given in the form of the function, is most frequently used: v “ K ¨ R´n (1) where R represents reduced distance, meaning the distance from the blast site to the ...
    ... Energies 2016, 9, 617 2 of 15 in addition to the seismic ones, those of air blast waves, fly rock, etc. Thus, production efficiency is increased and, at the same time, construction and mining facilities, as well as the environment in the vicinity of the blast site, are protected. 2. Soil Oscillation ...

  • Geostatički proračuni

    Gordana Hadži-Niković (2020)
    geostatika

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... for identifying inherited cores, cracks and inclusions inside zircon grain. U–Pb in-situ zircon dating and trace elements analyses of garnet were performed at the LA-ICP-MS laboratory of Geological Institute in Sofia, using New Wave UP193FX LA coupled to Perkin Elmer ICP-MS. Laser parameters were ...
    ... observational data. In: Gee D.G. & Stephenson R.A. (Eds.): European Lithosphere Dynamics. Geological Society, London, Memoirs 32, 191–206. Jackson S.E., Pearson N.J., Griffin W.L. & Belousova E.A. 2004: The application of laser ablation-inductively coupled plasma-mass spectrometry to in situ U-Pb zircon ...
    ... J., Zhang H., Wang J., Su L., Yang X. & Wu S. 2014: Origin of oscillatory zoned garnets from the Xieertala Fe–Zn skarn deposit, northern China: In situ LA–ICP-MS evidence. Lithos 190–191, 279–291. https://doi.org/10.1016/j.lithos.2013.12.017 ...