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Упит dcterms_subject_txt:grain size distribution

508 items

  • Одређивање оптималне производње дубинске пумпе на клипним шипкама

    Небојша Савић (2024)
    Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...
    дубинска пумпа, оптимизација, производња, потисни вентил
    ... 5%,0 Pump conditions: qas n Minimum pu'ro lenath (m) 43 Pump tvpe' Insen Pumo efbcvencyffdaqe | 4%%/95% | Recormended plunqerlength (m) 15 Plunaer size (men) 318 Pumo friction (N). 890 Bod wpg daaiani zi - “ NG PRGRGI2 /3,50 puzuzuu uuu= uuu Diameter (mm) |___RodGrade. ] Lengih | Mam Tem. | Foc. ...
    ... Pump conditions: qasim. Minwrum purro lenath (m): 49 Pump type iosert Pump efficiency/fdlaqe | 41%/95% | Fiecommended plunaor lenqth (m)- 5 Plunqer size (mm) 38 1 Pumop fnction (N)- 890 Rod string design Rod string stress analysis (service factor: 0.9) Diameter (mm) | __RodGrado # Guides/Rod 222 ...
    ... bottomj: 43 Pump conditions: Full Minimum pu:mo lenafh {m). 49 Pumo type- insert Pumo vol, efficiency: 72% Recorenended plunqer lenqth (m) 8 Plunqer size (memn) 38 1 Puro frictvon (N}: 890 Rod string design Rod string stress analysis (service factor: 0.9) Diameter (mm) RodGradoe LW M Tenm. | Fnc, | ...

  • Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints

    Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski (2024)
    Apuseni-Banat-Timok-Srednogorie belt, danubicum, paleomagnetism, oroclinal bending

  • 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)
    ... s-1. Figure 4.9.1 Location map of study area 4.9 Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer 4.9.3 Groundwater Distribution and Use Systematic geological research in this region began at the end of the nineteenth century. The first data about the geological structure ...

  • Оцена перспективности изворишта "Вић баре" за водоснабдевање Обреновца

    Бојан Хајдин, Душан Поломчић, Зоран Стевановић, Драгољуб Бајић, Катарина Хајдин (2012)
    ... which stimulate wells’ ageing, reduced summer/autumn Sava riverflows which are the main recharge source, and nevertheless current losses in water distribution system (over 40%). Simulations made on created hydrodynamical model confirmed that no additional amount of groundwater could be pumped at that source ...

  • Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata

    Dejan N. Radivojević (2014-12-30)
    Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...
    Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika
    ... preostalog ugljovodoničnog potencijala koriste se kriming kriva (creaming curve) i dijagram distribucije veličine polja (field size distribution diagram), koji daju informaciju o istoriji istraživanja basena bilo na nivou basena, njegovog ciklusa, nivou pleja ili samog pleja. 10.1.1. Paleta ...
    ... Za određivanje preostalog potencijala koriste se kriming kriva (creaming curve) i dijagram distribucije veličine polja (field size distribution diagram). Kriming kriva pokazuje povećanje kumulativnih bilansnih rezervi ugljovodonika nasuprot vremena (Murris, 1984). Basen, ciklus ...
    ... krivoj često su povezani s novim fazama u istraživanju usled, na primer, otkrića novog pleja. Dijagram distribucije veličine polja (field size distribution diagram) sumira broj polja povezan sa različitim veličinama polja (Rose et al, 1992). Distribucija veličine polja u basenu, u ciklusu ...

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • Advantages and challenges in presenting mathematical content using EDX platform

    Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone (2016)
    ... component and task component. The text component contains an editor for writing plain text, with basic editing functions, such as choosing fonts and size of text, adding pictures and links and setting up indentations. Besides the basic editor, the creator of materials can use html view of text. In ...

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... however, that waste is a very poor quality primarily due to: heterogeneous composition (both by the participation of individual materials and by their size), insufficient compaction and consolidation. Due to this specific porous structure, the physical and mechanical characteristics of the waste are extremely ...

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... Environment 476/477: 38 – 48. 115. Myllykyla E, Lavonen T, Stennett M, Corkhill C, Ollila K, Hyatt N. 2015. Solution composition and particle size effects on the dissolution and solubility of a ThO2 microstructural analogue for UO2 matrix of nuclear fuel. Radiochimica Acta 103 (8): 565 – 576 ...
    ... background concentrations of natural radionuclides (U, Th, and K) in the groundwater, and to establish hydrogeochemical conditions affecting the distribution of these elements in groundwater. The methodology of the research was carried out with contemporary field and laboratory methods (ICP - MS HR) ...
    ... collecting and analyzing data, while non- parametric statistical methods and hydrochemical modeling were applied in data processing. The uneven distribution of sampling sites (155 groundwater samples) had an impact on determining the origin of the chemical composition of groundwater, wherein the ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... of the most important reliability indicators is failure frequency, i.e. expected number of failures in certain time interval. Failure frequency distribution curve is afore mentioned "bath tub" curve, shown in Figure 5. Interpretation of this curve indicates that usually large number of failures occurs ...

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... the terms were taken, as well as the equivalent terms in other languages (currently, only english equivalents are present, see exam- ple 1). The size of the vocabulary, namely, the number of concepts is not finite, but the current version features around 3800 basic, universally accepted geologic ...
    ... terms in Serbian: Rang jedinice, Rangiranje ugljonos- nih jedinica, with the terms in english to the left: Arranged fabric, Range value, Fold range, Size range). The user selects one of the proposed rANkA STANkOvIć eT Al. ‒ The DevelOPmeNT OF The geOlISSTerm TermINOlOgIcAl DIcTIONAry INFOtheca, ...

  • An Italian-Serbian Sentence Aligned Parallel Literary Corpus

    Saša Moderc, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić (2023)
    This article presents the construction and relevance of an Italian-Serbian sentence-aligned parallel corpus, delving into the aligned sentences in order to facilitate effective translation between the two languages. The parallel corpus serves as a valuable resource for language experts, researchers, and language enthusiasts, fostering a deeper understanding of linguistic nuances and cultural expressions. By bridging the gap between Serbian and Italian, this corpus opens new avenues for cross-cultural communication and collaboration, and ultimately contributes to the improvement of language-related ...
    Aligned corpus, parallel corpus, Serbian, Italian, literature

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... resulting material was manually removed from the crucible, washed with distilled water and air-dried. Prismatic colourless single crystals up to 500 mm in size were observed, embedded in a polycrystalline matrix of KF. 2.2. Single-crystal X-ray diffraction measurement, structure solution and refinement ...
    ... resulting material was manually removed from the crucible, washed with distilled water and air-dried. Prismatic colourless single crystals up to 500 um in size were observed, embedded in a polycrystalline matrix of KF. 2.2. Single-crystal X-ray diffraction measurement, structure solution and refinement S ...
    ... 9339 (15) 5.7099 (5), 9.8898 (9), 13.8867 (14) �, �, � (�) 90, 90, 120 90, 90, 90 V (Å3) 395.84 (8) 784.18 (13) Z 2 4 � (mm�1) 13.69 13.82 Crystal size (mm) 0.28 � 0.09 � 0.08 0.28 � 0.09 � 0.08 Data collection Tmin, Tmax 0.110, 0.450 0.107, 0.444 No. of measured, independent and observed reflections ...

  • Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone

    Emő Márton, Marinko Toljić, Vesna Cvetkov (2022)
    The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...
    Adria–Europe suture, Vardar Zone, Paleomagnetism, Thrusting, Vertical axis rotation

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...
    ... Cooperative members and other forest owners in Kostojevići and surrounding settlements will provide biomass. In addition, cooperative would organize distribution and selling of heat. Cooperative model is optimal framework for determination ideal ratio between fuel (wooden chips) price and heat price, and ...

  • New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"

    Saša Ivanišević, Dejan Radivojević (2018)
    геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија
    ...  which leads to the reduction in the content of shale and increase in the content of  sand in the formation.  Bell shape of the GR log follows the trend of grain tapering out upwards, pointing  to the reduction in the level of depositional energy.  Cylindrical shape of the GR log occurs against sand  layers  ...
    ... eal rocks.   Implementation of the approach based on the analysis of depositional environments ensures a  much better insight into the spatial distribution of source, reservoir and seal rocks, which could results  in more correct assessment of hydrocarbon reserves. Furthermore, such an approach to  ...

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... represent another important NLP lexical re- source for Serbian, besides Serbian WordNet. However, both of them are not comparable with SMD either in size or in content, which is why SMD was chosen as the first lexicon for Serbian to be converted into a lexical database. 3. Morphological electronic ...
    ... professor’ denotes that it is derived from profesor ‘professor’ by gender mo- tion; 2 1Serbian e-dictionaries, SMD, have reached a considerable size: they comprise more than 150,000 simple-word lemmas, gen- erating more than 5 million forms and 18,000 multi-word lemmas. 2In the lexical database ...

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)

    Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... for further remediation and recultivation. The geodatabase model of abandoned mines includes the name, geolocation, administrative affiliation, size, geological structure, history, status and condition of recultivation, implemented measures for remediation and recultivation with supporting multimedia ...