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Упит dcterms_subject_txt:fragmentation size

320 items

  • Izdvajanje vode iz prirodnog gasa

    Dejan Nedeljkov (2024)
    U radu je istaknuto važnost prirodnog gasa kao vitalna komponenta svetske energetike.Spada u najsigurnije,najčistije i najkorisnije fosilno gorivo. Sama pojava vode u vidu vlage u gasu je pokazatelj lošeg kvaliteta gasa. parametri koji mogu dovesti do lošeg kvaliteta prirodnog gasa kao pokazatelj je Wobbe index.U okviru istraživanja u master radu glavni problem funkcionisanja na KPG Paliću predstavlja vlaga u gasu,takođe se može zaključiti da kvalitet gasa zavisi od Wobbe indeksa odnosno, što je Wobbe veći, čistiji je gas, ili ...
    prirodni gas, separatori, separacija, grejači, čileri, tačka rose, Wobbe indeks
    ... TM O n BR O O — 5 A.P. Szilas: Production and Transportation od Oil and Gas, Elsevier, Budapest, 1986,str.108 % Artur Gerunda: How to Size Liquid — vapor separators, Chemical Enginering,str.89 9 5. SAKUPLJANJE, SEPARACIJA, PRIPREMA I TRANSPORT GASA Sabirno - transportni sistem čine ...
    ... separatori zbog toga se daje upoređenje njihovih karakteristika. !' Ken Ranold, Maurice Steward: Designing oil and gas production system – How to size and select three phase separators, World Oil, Decembar, 1984., str. 68 18 Horizontalni separatori su produktivniji i efikasniji od vertikalnih ...
    ... IIL, 2012. godine [11] A.P. Szilas: Production and Transportation od Oil and Gas, Elsevier, Budapest, 1986. godine [12] Artur Gerunda: How to Size Liquid – vapor separators, Chemical Enginering. [13] Andre Giraud, Xavier BOY: Geopolitique du petrol et du gaz, Edition Technip, Paris, 1987. godine ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... English, there is a need to translate them into other languages. GIZZA++ is the right tool for that, but it needs a parallel corpus of significant size, that depends from language and domain. First a DTD scheme neds to be used to validate and check well-formedness. Then it is necessary to pair the ...

  • 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

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... of methanotrophs present in lignites depends on the physicochemical changes in the environment. 4. Conclusions The obtained results show that the size and nature of the GHG emis- sions depend on the lithotype of brown coal. The lowest impact on the environment was found in xylitic lignite (with GWP ...
    ... Peach, C.J., Spiers, C.J., 2016. Anisotropic swelling behaviour of coal matrix cubes ex- posed to water vapour: effects of relative humidity and sample size. Int. J. Coal Geol. 167, 119–135. https://doi.org/10.1016/j.coal.2016.09.011. Liu, B., Vrabec, M., Markic, M., Püttmann, W., 2019. Reconstruction of ...

  • Димензионисање камионског транспорта јаловине на површинском копу Угљевик Исток 1

    Наталија Терзић (2024)
    Напредовањем рударења дошло је до потребе за експлоатацијом сложенијих и сиромашнијих лежишта, самим тим и повећањем трошкова.Профитабилна експлоатација лежишта минералних сировина захтева детаљну анализу свих техничко-економских фактора.Два најутицајнија фактора на профитабилност експлоатације руде јесу откопавање и транспорт, због тога је неопходно направити изводљив стратешки план који ће бити у складу са свим ограничењима и омогућити испуњавање свих планираних резултата.Транспорт на површинским коповима одвија се паралелно са осталим процесима експлоатације, стога је неопходно да сви системи буду усаглашени како не ...
    дисконтинуални транспорт, откривка, транспортне трасе, Тalpac, капацитет, камион, багер
    ... Travel Time min/ Cycle 11.20 SpotTime at Dump min/ Cycdle 0.30 Average Dump Time min/ Cycle 0.20 Average Cycle Time min/ Cycle 16.82 Fleet Size 4 Average No. ofBucketPasses 877 Production perYear ftonne/Year 2,037,151 Discounted Capital Cost Sfonne 0.00 Loading Methodology Discounted ...
    ... 00 TravelTime | min/Cyde 20,51 Spot Time atDump - min/Cycie o,30 Average Dump Time - min/Cycs o,20 Average Cycle Time - min/Cyce 28,68 Fleet Size s Average No. of Bucket Passes 5,00, yulage System Production per Year - tonne/Year 4246115 Discourtted Capital Cost S/tonne O,OD _ Loading M ...
    ... | Auto MG 030 D Cnuka 30. Jleraxban rpopauyH cHrypHux Op3HHa rto JeoHHHaMa |+ Productivity Summary - Full Simulation | m | [ ag Eopot Fleet Size 5 Producton per Operating Hour 196 86 tomne Average Loading Time 400 min DUMP Average Dump Time- 020 mn (Queue Time atLoader — 338 mm Wait Time ...

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... of domains, number and size of existing speech corpora, amount and va- riety of available speech-based applications ‚ Machine Translation: uality of existing MT tech- nologies, number of language pairs covered, cover- age of linguistic phenomena and domains, quality and size of existing parallel corpora ...
    ... and do- mains, amount and variety of available applications, quality and size of existing (annotated) text corpora, quality and coverage of existing lexical resources (e. g., WordNet) and grammars ‚ Resources: uality and size of existing text corpora, speech corpora andparallel corpora, quality and ...
    ... неопходникораци зависе одмно- depend on many factors, such as the complexity of a гих фактора, као што су сложеност језика или вели- given language and the size of its community. чина заједнице која га користи. Пројекат МЕТА- META-NET, a Network of Excellence funded by the НЕТ, мрежа изврсности коју финансира ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... in liquid pyrolysates of lignite/HDPE, these biomarkers cannot be identified owing to the extremely low concentrations, even using their typical fragmentation ions m/z 123, 183, and 191, respectively. In addition to n-alkanes and terminal n-alkenes, liquid pyrolysates of HDPE and lignite/HDPE mixtures ...
    ... in food packaging [18], whereas Solanyl® type biopolymer was reinforced with lignocellulosic wood flour particles of small (0.07–0.15 mm) and medium size (0.30–0.50 mm) [19]. Recycling of plastics and conversion of polymeric materials into useful products (via pyrolysis, hydrolysis, hydrogenation, and ...
    ... J. Serb. Chem. Soc. 2017, 82, 739–754. [CrossRef] 10. Li, Q.; Jiang, J.; Zhang, Q.; Zhou, W.; Cai, S.; Duan, L.; Ge, S.; Hao, J. Influences of coal size, volatile matter content, and ad-ditive on primary particulate matter emissions from household stove combustion. Fuel 2016, 182, 780–787. [CrossRef] ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... In Figure 5, the left hand side of the panel depicts the predefined classification of equipment types and their groupings, while the right hand size depicts parameters assigned to a specific type of equipment, or its group component. For each parameter assigned to the type of equipment, a data type ...

  • A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić (2012)
    This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...
    multilingual digital libraries, query expansion, TMX
    ... category of unstructured and semi-structured collections of data. This term generally refers to heterogeneous (different in format, standard and size, etc.) data, of a potentially variable structure, the content of which can grow exponentially. Manipulation of such data, which in general encompass ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... implemented within a mining engineering information system, which has previously also been developed at FMG. Although it has reached a considerable size to date, it is still being intensively enlarged and refined. However, it is also already being used, among other things for the production of controlled ...

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

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

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... min{μR j = 1, …, 5, μM j = 1, …, 5, μS j = 1, …, 5}, for all o = 1 to O (4) - Outcomes are grouped according to their values Ωc, namely the size of j. - Find the MAXimum between previously identified minimums for each group of outcomes. The maximum which corresponding the jth value is calculated ...

  • Flotability of chalcopyrite from the Rudnik deposit

    Đurica Nikšić, Predrag Lazić, Milena Kostović (2021)
    Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...
    Директно селективно флотирање, халкопирит, KAX, NaCN

  • Praktikum za vežbe iz Informatike 1

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Mirjana Banković (2014)
    informatika

  • 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
    ... of this graded layer, the amount of calcite spar increases and the contact with the overlying layer appears to be gradual with decreasing particle size. The layer was observed to vary in thickness between 3 to 8 centimeters. ii) Cross-laminated, well-sorted peloidal grainstone with some internal ...
    ... internal normal and inverse gradation (Figs 4/1, 3). The cross-lamina- tion is much more pronounced than in the very-coarse layer due to the uniform size of carbonate particles. The angle between the lamination and the bedding is estimated to be < 5 degrees. Bioclasts mostly include abundant foraminifers ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... database related to a particular document or project; 2. Lemmatizing and Part-Of-Speech tagging of all texts Di, where i = 1, . . . N and N is the size of text collection; 3. Recognizing NEs and assigning the chosen types to documents; 4. Selecting ungrammatical words Tij and calculating their frequencies ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... system 4. Evaluation For evaluation we used a corpus that contains 10textbooks, 2 projects and 51 journal articles from the mining domain. The size of this corpus is 32,633 sentences and 625,105 simple word forms. For calculation of measures that compare results on a domain corpus with general ...