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Упит dcterms_subject_txt:Gas Hydrate Formation

344 items

  • Oligocene shoshonitic rocks of the Rogozna Mts. (Central Balkan Peninsula): evidence of petrogenetic links to the formation of Pb-Zn-Ag ore deposits

    Borojević-Šoštarić Sibila, Cvetković Vladica, Neubauer Franz, Palinkaš Ladislav, Bernroider M., Genser Johann (2011)

  • Analysis and Calculation of MMRS and Primary Gas Distribution Network in Urban Environment – Case Study Kučevo

    Aleksandar Madžarević, Pavle Janković (2022)
    Oblast primene prirodnog gasa je veoma široka. Kao energent može se koristiti za proizvodnju energije u elektranama, toplanama i postrojenjima za kombinovanu proizvodnju energije ili za zadovoljavanje različitih toplotnih potreba u industriji i širokoj potrošnji. Gas se može upotrebiti i kao sirovina u hemijskoj i petrohemijskoj industriji, a tokom poslednjih decenija nalazi primenu i u saobraćaju kao pogonsko gorivo u SUS motorima. Sa ekološkog stanovišta, prirodni gas predstavlja najprihvatljiviji izvor energije u poređenju sa drugim fosilnim gorivima. Pri sagorevanju ...
    distribucija gasa, projektovanje gasovoda, analiza potrošnje

  • Callovian (Middle Jurassic) terebratulide brachiopods from the Jordan Valley (northwestern Jordan)

    Howard R. Feldman, Barbara V. Radulović, Vladan J. Radulović, Fayez Ahmad (2021)
    U radu je izvršena revizija srednjojurskih terebratulidskih brahiopoda Jordanske doilne, a takodje su spisku predhodne faune dodati i novi taksoni. Sa profila Tel el Dahab, iz kelovejskih stena (Muganija formacija) odredjeni su novi taksoni terebratulida: Kutchithyris simoni sp. nov. i Trigonithyris wilsoni sp. nov, koji su ovom prilikom opisani. Takodje, po prvi put se iz Jordana pominju i tri terebratulidske vrste: Bihenithyris barringtoni, Ptyctothyris daghaniensis i Sphriganaria cardioides koje su nadjene zajedno sa Bihenithyris weiri, a koje imaju šire ...
    brahiopodi, sistematika, Etiopska provincija, severozapadni Jordan, srednja jura, kelovej

  • The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin

    Filip Anđelković, Dejan Radivojević (2019)
    gornji miocen, litostratigrafske jedinice, formacije, Panonski basen
    ... deltaic sediments A rough petroleum geological classification of these formations would be like this: Formation 1 – source rocks; Formation 2 – reservoir rocks; Formation 3 – seal rocks; Formation 4 – reservoir rocks. References: 1. Balázs, A., Mațenco, L., Magyar, I., Horváth, F., Cloething ...
    ... understanding of the time and character of deposition leads to a better understanding of petroleum gelogy. Further in the text, those units with formation rank are listed. Geologists who study the Pannonian basin use different names for the same fomations, thus making correlation more difficult. ...
    ... Carpathians and their foreland: geology and hydrocarbon resources. AAPG Memoir. 84, pp 619-632 7. Mațenco, L., & Radivojević, D., (2012). On the formation and evolution of the Pannonian Basin: constraints derived from the structure of the junction area between the Carpathians and the Dinarides. Tectonics ...

  • Upper Cretaceous scaglia type limestone from Klepa Mts. (North Macedonia) - sedimentology and biostratigraphy

    Violeta Gajić, Milena Dunčić, Ana Mladenović, Dejan Prelević (2024)
    The research area is located in the central part of North Macedonia, in the area of the Klepa Mts. Based on sedimentological, micropaleontological and biostratigraphical investigations of samples from both the east and west side of the Klepa Mts., sedimentary rocks of the Upper Creaceous age are determined. During the latest Cretaceous, this area was dominated by the sedimentation of dominantly carbonate rocks with variable amounts of clastic components. From the tectonic point of view, investigated area belongs to the ...

  • Characterization, axial anisotropy and formation conditions of celestine from the Jabal Eghei (Nuqay) late Neogene – Pleistocene volcanic province, southern Libya: Constraints on the mineralogical geothermometer

    Pavle Tančić, Maja Milošević, Darko Spahić, Bojan Kostić, Aleksandar Kremenović, Maja Poznanović-Spahić, Jovan Kovačević (2023)
    celestin, karakterizacija, Libija

  • Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles

    Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)
    Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...
    Kinetika, Ravnoteža, Ru(II), L-Histidin, Guanozin-5' -monofosfat, Dimetilsulfoksid, Tiourea
    ... values confirm a good agreement between potentiometric and spectrophotometric measurements. Complex formation of [Ru(trpy)(bpy)H2O] 2? with HL (where HL = 50-GMP or L-His) The complex formation of [Ru(trpy)(bpy)H2O] 2? with ligands 50-GMP or L-His, symbolized by HL, was studied Ru trpyð Þ bpyð ...
    ... obtained values confirm a good agreement between potentiometric and spectrophotometric measurements. Complex formation of [Ru(trpy)(bpy)H>O]°* with HL (where HL = 5'-GMP or t-His) The complex formation of [Ru(trpy)(bpy)H,O]?* with ligands 5’-GMP or L-His, symbolized by HL, was studied Table 2 Stability ...
    ... for q refers to proton removal or hydroxide ion addition during formation of the complex. Thermodynamically, these two processes are equivalent and cannot be distinguished by potentiometry. The equilibrium constant for the formation of this complex from its components is then designated by the symbol ...

  • Jovanovići deposit: New formation type of dimension and construction stone in Montenegro

    Darko Božović, Vladimir Simić (2023)
    Arhitektonsko-građevinski kamen predstavlja jednu od najznačajnijih nemetaličnih mineralnih sirovina Crne Gore, sa brojnim istraženim ležištima karbonatnih mineralnih sirovina od kojih su neka u eksploataciji, među kojima je područje Bjelopavlića najznačajnije. Formaciono-mineragenetskom analizom karbonatnih sedimenata rudnog rejona Bjelopavlića izdvojeno je više formacionih tipova karbonatnih sirovina, među kojima i formacioni tip Jovanovići, kao novi formacioni tip ukrasnog kamena u Crnoj Gori. U radu je dat prikaz rezultata višegodišnje formaciono-mineragenetske analize izvršene na području rudnog rejona Bjelopavlića, geološke karakteristike formacionog tipa Jovanovići, ...
    ukrasni kamen, rezerve, kvalitet, potencijalnost

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia

    Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)
    The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...
    hydrogeological characteristics, water regime, water balance, karst aquifer, Resava catchment area
    ... Измењено: 2023-11-30 13:22:57 Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić Дигитални репозиторијум ...
    ... јум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia | Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić | National Conference ...
    ... c MexxiyHapojiHo yuacrHe „TFEOHAVKH 2022“ National Conference with International Participation “GEOSCIENCES 2022” Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia B'I>3)IČI7ICTBI/IČ Ha KapčcToBHTe BO/IH BbpXy HIOBbpXHOCTHH5I OTTOK: IIpHiMep ...

  • Radiolarian assemblage from radiolarites of the Krs Gradac section (SW Serbia): On the way to a better reconstruction of the Middle-Late Jurassic geodynamic history of the Inner Dinarides

    Nevenka Djeric, Marija Vuletic (2023)
    Гоње Формација, радиоларије, граница келовеј/оксфорд, басен Љубиш

  • Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije

    Vladimir M. Simić (2003)
    Kaolinitske gline predstavljaju jednu od privredno najznačajnijih nemetaličnih mineralnih sirovina u Srbiji. Ležišta tih glina odavno se istražuju i eksploatišu u Aranđelovačkom i Kolubarskom basenu i basenima vlašićkog antiklinorijuma. Osim toga, u većem ili manjem obimu istražene su mnoge lokalnosti, a na nekima od njih vršila se povremena eksploatacija. Dosadašnja istraživanja kaolinitskih glina imala su, međutim, prevashodno uzak istraživački cilj - utvrđivanje rezervi glina određenog ležišta, dok su istraživanja regionalnog karaktera bila malog obima i vezana za delove pojedinih ...
    prognozna ocena, resursi kaolinitskih glina, sedimentni baseni, Srbija, geologija, mineralogija, kvalitet, potencijalnost

  • Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy

    Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag (2014)
    anizik, ladin, karbonati, litostratigrafija, biostratigrafija, konodonti, radiolarije, dijageneza
    ... (Budai & Voros 2006). The “Szentkir4lyszabadja” pPlatform (Buda6rs Formation on Fig. 2) started up dur- ing the Secedemsis zone and prograded over the former Anisian basins (V4aszoly Formation in Fig. 2). The Bu- daors Formation was studied at several road cuts, quar- ries and boreholes (Fig. ...
    ... activity during the Ilyrian (VAaszoly Formation, Reztzi ammonoid zone), which was followed by late IHHyrian to early Ladinian (Sece- densis to Cuyiontt ammonoid zone) nodular limestones interbedded with tuffs, siliceous limestones, and marls (Buchenstein Formation, Fig. 2). Nodular limestones were ...
    ... assemblage o: Bakony. D. anmnulata was also found in the same Dolo- mite overlying the Viszoly Formation at Oreg-Iszka. Based on the algae, upper IHlyrian to lower Fassanian age was assigned to the formation by the authors. D. annulata was also described from the peloidal grain- stone to boundstone ...

  • Effect of natural gas composition on methane number: A case of gas reservoirs in Serbia

    Marija Živković, Milica Ivić, Dejan Ivezić, Aleksandar Madžarević (2017)
    Natural gas is considered as the most environmentally acceptable fossil fuel, thus it is an alternative to petroleum derivate, dominantly used in internal combustion engines. Physical properties of a fuel as well as behavior during combustion process are affected by its composition. This article presents analysis of effect of natural gas composition on methane number (MN), conducted for natural gas deposits in Serbia. For empirically determination of MN: California air resources board (CARB) method and Linear and Anstalt für ...
    Састав, метански број, природни гас

  • Balance between tectonics and sedimentation during geodynamic evolution of the Adria-Europe convergence zone in central Serbia

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Tamara Bogdanović (2021)
    ... as observed in the Rudnik Formation in Central Serbia. The westward expansion and migration of trench deposition towards the lower Adria plate culminated withMiddle Campanian–Late Maastrichtian deposition of siliciclastic trench turbidites observed in theLjig Formation. The onset of the latest C ...
    ... over the Sava trenchturbidites. The continued continental collision led to the propagation of thrusting during Eocene,which was characterized by formation of the large offset out-of-sequence thrusts. The eductionthat followed break-off of the Neotethys slab beneath the Dinarides triggered Oligocene– ...

  • 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
    ... partly with preserved Late Carnian drowning sequence Bulog Limestone Formation (Middle-Upper Anisian) Ravni Formation (Middle Anisian) Bioturbate Formation (Late Lower Triassic to early Middle Triassic) Sirogojno Formation (?Lower Triassic) Fig. 2. a — Geographical sketch map showing the ...
    ... OPHIOLITHIC MELANGE — INNER DINARIDES 353 ToOR ~Ea t Cic:o@eb.obučmc: -.. veo:a0:at:00:00:0 0) Gro:G:a:G.o.Gr6:O; .8 Quaternary Goveđača Formation (Cenomanian) Radiolaritic-ophiolitic Melange (Callovian to Oxfordian) with few serpentinite blocks Beograd Serbia Užice Čajetina X o ...
    ... Samples SCG 50-52 from the ophiolitic mćlange between a Late Triassic fore-reef to reefal block and an Early Carnian reefal block of the Wetterstein Formation. GEOLOGICA CARPATHICA, 2017, 68, 4, 350—365 354 Fig.3. Occurrence of the ophiolitic mćlange in fissures of the back-recf to lagoonal Dachstein ...

  • Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)

    Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović (2022)
    Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...

  • Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics

    Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić (2024)
    Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...
    Lecki vulkanski kompleks, andeyit, kalcedon, kvarc, opal-CT, mikrostruktura, organska materija

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... Outcrops and regional cross-sections indicate that thrusting was associated with the formation of E-vergent folds and a wide shear zone at the Supragetic thrust contact that recorded splaying by the formation of Fig. 9. Interpreted field photos of brittle structures related to Paleogene to Miocene ...
    ... (compare cross-sections in Figs. 4a, b, e). Changes in offset are accommodated by the formation of ~E-W oriented sub-vertical tear faults and lateral ramps (Fig. 5). A similar deformation style by the formation of ramp-folds, fault-propa- gation folds and asymmetric E-vergent folds is observed in ...
    ... oroclinal bending triggered the formation of the Danubian detachment during the Paleocene-Eocene, which remained active until the early middle Miocene, overlapping in time with the activity of Cerna and Timok dextral strike-slip faults and the transtensional formation of the Getic Depression Basin ...

  • 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
    ... д. Овакав гас  се називао градским гасом, а уколико је процес вођен тако да се у саставу гаса добије и  нешто већи проценат водоника,  такав  гас  је био познат и као водени  гас. Ови вештачки  добијени  гасови  су  данас  само  од  историјског  значаја.  Гасоводи  за  дистрибуцију  гасова  добијени ...
    ...  вискозитет гаса који се транспортује η=1,0758·10 ‐5 Pa и густина гаса  ρ=0,84 kg/m3 , а густина ваздуха 1,28 kg/m3 . Проток гаса  је 2000 m3 /h. Претпоставља се да  је апсолутни притисак гаса у  цевоводу око р=4·105 Ра. Користити обрасце по Колбруку и по фон Карману.     Брзина  гаса  у  цевоводу  ...
    ... итет гаса који се транспортује η=1,0758·10‐5 Pa и густина гаса ρ=0,84 kg/m3 ,  а густина ваздуха 1,28 kg/m3 . Проток гаса  је 2000 m3 /h. Претпоставља се да је апсолутни притисак гаса у цевоводу око  р=4·105 Ра. Средња температура у цевоводу је 288,15 К а средњи фактор компресибилитета гаса Zavr=1 ...