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Упит dcterms_subject_txt:Language and Linguistics

2342 items

  • 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 ...
    ... biomass supplier and district heating system operator. Cooperative model is optimal framework for determination ideal ratio between fuel and heat prices, and adjustment of system profitability, because cooperative members are in the same time fuel sellers and heat energy consumers, and they also expect ...
    ... e fund. Cooperative would organize biomass collecting and woodchips production. 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 ...
    ... of Mining and Geology 2Standing Conference of Towns and Municipalities, Belgrade Abstract: 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 ...

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... n rates spatially and temporary varies and depend on palaeoecological and palaeogeographic conditions. Generally, well-rounded and fine-grained sediments reflect calm and slow sed- imentation, while angular coarse-grai ned sediments are mostly related to short palaeotransport and fast sedimentation ...
    ... his brothers died from tuber- culosis at young age and besides his mother jeli - saveta and grandmother, his uncle vasilije Maučević took care of him and sisters. In 1889 he left to his uncle Paja Maučević to osijek where he went to Gymnasium and very soon became the best student even though before ...
    ... pri- vate teachers and governess. Since there was not electrotechnics at vienna Technological Institute (actually Technische Universität Wien) he went to civil engineering and graduated in 1902. He contin- ued his vienna studies and at age of 25 (on Decem- ber 12th, 1904) gained a PhD and become the first ...

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... TInfluence of 4F ions on bepsin and haemoglobin conformation UV studies. The pepsin-A! and haemoglobin-AP"* interactions were followed by UV spectra. The absorption spectra of pepsin and haemoglobin in the absence and presence of 1OmM Al are presented in Figures 5 A and B. It is obvious that the ...
    ... standard potassium bromide (KBr) pallet (the ratio between pepsin and KBr and pepsin – AP? and KBr were 1:100); the pallets of haemoglobin samples in KBr were prepared in the same manner. Infrared spectra between 4000 and 400cm ! obtained on a Specord 75 IR, Carl Zeiss in double-beam operation ...
    ... concentrations of AP? ion (1, 5 and 10mM). "The samples of pepsin and haemoglobin were diluted with sample buffer in ratio 1:1 (v/v) and applied on gel in volume of 20 uL. Visualization was performed with Commassie Brilliant Blue G-250 dye. The gels scanned and processed using Corel Draw 11.0 ...

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... Western Tatra Mountains. A. L, Lb and Ld composite section. B. Lc section. Lithology, biostratigraphy (including position of the radiolarian and calcareous dinoflagellate and calpionellid samples) and results for carbon and oxygen isotope measurements, CaCOy content and microfacies analysis. Age denotes ...
    ... 17 (Polak and Ondrejičkov4, 1995); 18 (Plašienka and Ožvoldov4, 1996: Plašienka, 2012); 19 (Rakus and Ožvoldov4, 1999); 20, 22, 23, 25, 27, 29 (this study); 21, 24, 28 (Pol4k ef a/., 1998); 26 (Bak, 2001); 3035 (Polak and Ondrejičkova, 1993); 36 (Polak and Ožvoldov4, 2001); 37 (Sykora and Ožvol, ov4 ...
    ... , 1994; Birkenmajer and Widz, 1995; Plašienka and Ožvoldova, 1996; Ožvoldova and Frantov4, 1997; Ožvoldov4 ef al., 2000). However, some radiolarite interbeds within the red nodular limestones of the Kysuca succession and within thc dark, spotted siliceous limestones and marls (Podzamcze Formation ...

  • 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
    ... variables related to A itself and to R, M and S. It is necessary to describe five linguistic variables i.e. fuzzy sets: poor, adequate, average, good and excellent. Fuzzy sets are in triangular form, and they are presented in relation to membership function (μ) and measurement units of A indicators ...
    ... in terms of R, with grades "good" in extent of 40% and “average” in extent of 60%; M as "average" in extent of 100% and S as "adequate" in extent of 100%; machine Dressta as "average" in all terms and Caterpillar as "good" in terms of R and S and "excellent" in term of M. This can be written in the ...
    ... breakdowns and delays. The availability is commonly used as a measure of dependability. Availability is expressed by quantitative indicators, and these indicators are measures of dependability and quality of service. Availability performance has a decisive influence on the dependability and the quality ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... regions and sectors. CO> emissions increased in North America and Asia (excluding the People's Republic of China), to a greater extent than emissions reductions in Europe and China. At the global level, CO>» emissions from electricity generation and the transport sector increased by 261 Mt and 254 ...
    ... air, soil, and water. Sector of production and use of coal also provides Jobs to around 230.000 people in mines and power plants across 31 regions and 11 EU countries [8]. Table 1. The US coal consumption in 2021 [6] Electric power | Industrial total | Commercial | Residential and transportation' ...
    ... led by increased Asian market and economic development. Global demand for electricity increased by 2.7% [4]. This paper analyzes production and emissions of CO in sector of electricity in two big worlds region - EU-27 and US. The emission of CO> in EU-27 and US in last 30 years are anatomized ...

  • Control of substructure construction of railways in the Republic of Serbia

    Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović (2022)
    Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...
    доњи строј, техничка регулатива, насип, збијеност, контрола
    ... open track tracks and main tracks on main railways Ev2 > 80 MN/m2, Ev2/ 5 MN/m2, Rc* for the construction and improvement of open railway tracks and main tracks on regional railways Ev2 > 60 MN/m2, Ev2/Ev1 m2, Rc* for the construction and improvement of tracks on local railways and secondary tracks ...
    ... the standard and technical conditions (harmonized with the standard) determine in examination process the zone where soil homogeneity is ensured (by granulometric composition and moisture) and in statistically reliable research conditions. Perform the necessary tests and correlations and, based on them ...
    ... of the protective layer is 20 cm, and in the case of thickness > 30 cm it is installed and compacted in two layers. Load-bearing capacity at the level of the railway planum meets the following requirements: for the construction and improvement of open track tracks and main tracks on main railways Ev2 ...

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен

  • 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

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... this case), and its definition. For each term, available translational equivalents in other languages can be displayed, as illustrated by the smaller panel in Figure 3,which shows the translations of the term Rudnik (Coal Mine) in French, Russian and English. Definition in another language can also be ...
    ... ontology language OWL. Keywords: mining equipment, terminological resources, onotologies, OWL, mining thesaurus 1. INTRODUCTION The use of information technology (IT) is today indispensable in almost all mining engineering areas, including mining equipment management and maintenance ...
    ... engineering using OWL (Web Ontology Language). The final section features some concluding remarks. 2. TERMINOLOGICAL RESOURCES 2.1 Semantic scale of terminological resources In general, terminological resources in e-format can be organized in different ways and serve different purposes. Depending ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... landslides were defined as translational and rotational debris and earth slides and rock falls. Over 60% of the occurrences have been defined as intermediate and deep, and those mostly occurred in debris material overlying hard rock masses or in fluvioglacial and proluvial sediments. The depth of some ...
    ... depending on the analyzed region and conditioning parameters used, the proportions and values of the ratings and sensitivity co- efficients need to be carefully selected. This selection should be done by an expert team and then checked by running several combinations of ratings and sensitivity coefficients ...
    ... type (14.08% and 16.6%, for WLT-TLSR-100 and WLT- TLSR-500 variants, respectively), followed by slope inclination (12.97% and 14.69%, for WSI-TLSR-100 and WSI-TLSR-500 var- iants, respectively). The smallest changes in landslide distribution are noted for land use (6.83% for WLU-TLSR-100 and 2.39% WL ...

  • 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)

  • 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
    ... ropalaeontological, magnetostratigraphic and · geochemical methods. The Dedina section yields rich and diverse associations of macrofauna represented by cephalopods (ammonites, aptychi and belemnites), brachiopods, and bivalves. Among the most frequent and diverse are ammonites. The current study ...
    ... Besnosov and Mikhailova (1991), Wright et al. (1996), Kvantaliani et al. (1999), Klein (2005), Arkadiev and Bogdanova (2004, 2005), Bogdanova and Arkadiev (2005), Arkadiev and Bogdanova (2012), Arkadiev (2014), Bulot et al. (2014), Frau et al. (2016a,b), Hoedemaeker et al. (2016), and Szives ...
    ... tional deposits between the Tithonian and Berriasian and, according to Arkadiev and Bogdanova (2012), from the lower Ber- riasian (Jacobi Zone) of Crimea, Bulgaria, Romania, Austria, France, and Spain. Occurrence. Light grey marlstones of layers 80 and 96. Pseudosubplanites subrichteri (Retowski ...

  • Joint interpretation of paleomagnetic, structural and AMS results from the Vardar Zone of Serbia

    Emo Marton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2021)

  • 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

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... cultural, social and organizational frameworks; it should be applicable to large and small companies and for large and small-scale environmental pollutants. It was thus decided that the ranking of five current tailing ponds should be done by multi-criteria analysis. Field work and analysis of flotation ...
    ... 43007: Climate Change Impact to the Environment-Assessment, Adaptation and Mitigation, Sub-Project 15: Climate Change Impact to the Environment and Natural Resources of the North of Kosovo and Metohija and Project OI 176018: Geological and ecotoxicological investigations in identification of geopathogenic ...
    ... estimated that there are around 700 million tons of flotation and separation tailings, between 1.4 and 1.7 billion tons of tailing wastes from opening pits and around 170 million tons of ashes from thermal power plants on deposit spots and landfills in Serbia. Metallurgy in the Republic of Serbia contributes ...

  • A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor

    Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić (2023)
    železnica, prekogranični teretni saobraćaj, ARIMA, LSTM, SSA