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Упит dcterms_subject_txt:working environment

466 items

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... at: www.dr.rgf.bg.ac.rs Introduction Arsenic (As) occur naturally in the environment in a number of different forms. Some are toxic, while others are not. Pure arsenic, a gray-colored metal, is rarely found in the environment. Instead, it is usually combined with one or more other elements such as oxygen ...
    ... undertaken in accor- dance with the Drinking Water Sampling and Laboratory Analysis Rulebook [24]. The laboratory for chemical test- ing of the environment at the Faculty of Natural Sciences of the University of Novi Sad used advanced and specialized tools for the precise required analysis. Arsenic ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... date, the working hour, and the shift, whereas the time of the day and day of the week are also entered for the purpose of later analyses. The place where the accident occurred is determined by location and site, and a record is also made of whether the accident occurred during working time, or ...
    ... injuries on specific days in percent Figure 6 offers an overview of injuries by body parts and working hours. The most common injuries are limb (leg and arm) injuries that occur in the middle of the working day (shift). The reason for this can be found in the carelessness of workers not wearing proper ...
    ... are: type of injury, body part, severity of injury, worker’s age and qualifications, time dimension, organizational structure of mine, shift and working day in which the injury occurred, the source and cause of the injury, etc. Figure 3 depicts two OLAP cubes. Each cell of the cubes holds a number ...

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... evaluation of the general ventilation state of the mine. An appropriate and reliable solution for this problem is vital for the safety of the working process in mines with underground exploitation. Contemporary mining theory already operates with a number of mathematical methods which can be ...
    ... SimVent. Hence, VENTEX contains the “classical” elements of an expert system: the knowledge base, an inference engine, the user interface and a working memory, but also a module for the interface with SimVent numerical routines, the simulation routines themselves, and a data base used by these ...
    ... the knowledge base and the available information pertaining to the problem at hand. The inference engine stores intermediate results in the working memory. The VENTEX system was developed as a knowledge-based (symbolic) upgrade of the SimVent numerical package and it thus belongs to the ...

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... of their Pleistocene counterparts were created during warm climatic stages. Very important data on the palaeoclimatic characteristics of the environment can also be obtained by geochemical studies of oxygen isotopes in mollusc shells. Analyzing the isotopic composition of shells from successive ...
    ... remains of molluscs, other significant data useful for the reconstruction of palaecoenvironments can be obtained, such as whether the immediate environment was forest, steppe or open type (wet meadows to steppe), whether these are species that indicate marshy, river and lake environments or are in ...

  • Development of Open Educational Resources (OER) for Natural Language Processing

    Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević (2015)
    In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...
    E-Learning, Open Educational Resources, Computational Linguistics, Lexical Resources, edX
    ... none in Serbian either for CL or NLP. We have developed this course in order to improve this situation as it can prove useful both for linguists working in corpus linguistics and computer scientists developing NLP applications. The participant will become familiar with the use of Unitex, the corpus ...
    ... Serbian 13 is presented. [13][14] 2. Unitex corpus processing system is presented from the practical point of view: how to install it and start working with it, main steps of text 12http://edx.baektel.eu/courses/UB_FIL/UB_FIL1/2015/about 13http://www.korpus.matf.bg.ac.rs/korpus/login.php ...
    ... Editors. 2002, Narodna biblioteka Srbije: Belgrade. p. 117-122. [10] Stanković, R., et al., Building terminological resources in an e-learning environment, in The third International Conference on e-Learning. Belgrade, Serbia. p. 114-119. [11] Paumier, S., Unitex 3.1 Beta: User Manual. 2015, ...

  • Towards translation of educational resources using GIZA++

    Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević (2016)
    ... scoring, created lexicalised reordering tables and Moses configuration file, all with a single command. Before starting the command, we created a working folder in which results were stored. nohup nice ~/mosesdecoder/scripts/training/train- model.perl -root-dir trainedX \ -corpus ~/corpus/edX.clean ...
    ... features.  CAT tool has support for terminology look-up, display and insertion of the search results into the text being translated. 4. ENVIRONMENT FOR TEXT ALIGNMENT Preliminary phase for the text alignment (parallelization) consists of XML document (eXtensible Markup Language) preparation ...
    ... 2016 [11] Meta Texis, http://www.metatexis.com/cat.htm, accessed June, 10th 2016 [12] I.Obradović, R.Stanković, and M. Utvić, An Integrated Environment for Development of Parallel Corpora (in Serbian). In: Die Unterschiede zwischen dem Bosnischen/Bosniakischen, Kroatischen und Serbischen (pp. ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... separated from the closed loop working fluid used in the turbine by a heat exchanger. The hot water gives up its heat in the heat exchanger to a working fluid with a low boiling point and high vapour pressure at low temperatures when compared to steam. The working fluid is usually ammonia or some ...
    ... conversion of the geothermal energy: (1) Single Cycle Geothermal Power Plants. Generation of power by the conventional steam turbine requires the working fluid temperature of no less than 150 °C. It is available only from very hot geothermal sources or with overheated water flashed to steam. (2) Binary ...

  • WS4LR - a Worksation for Lexical Resources

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović (2006)
    Lexical Resources, Wordnet, Serbian
    ... the user can retrieve all synsets from the working wordnet that belong to the domain of geology, or more precisely, that contain the element with the content “geology”. New synsets can be added to wordnets using predefined forms. If working simultaneously with two wordnets, the user can ...
    ... Management This module enables concurrent manipulation of a set of dictionaries of lemmas, simple words or compounds, distributed in several files. Working with DELAF type files is not directly supported since this type of files should in general be produced automatically from DELAS by applying the ...
    ... enables easy production of Intex/Unitex graphs that locate all literals from a chosen synset in a text, with or without synset hypernyms. 3.4 Working with Aligned Texts The module uses texts which have previously been aligned using Xalign as an alignment tool and converts them to TMX format, ...

  • 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
    ... existence and comfort in performing daily activities with an increasingly obvious pressure on the systematic reduction of the impact on the environment in the processes of production, transformation, and consumption of electricity. Total global energy-related greenhouse gas emissions rise by ...
    ... different large industrial plants in the EU-27 countries are emitters of various pollutants from fossil fuels. In order to mitigate the impact on the environment, EU policy aims to reduce emissions from such plants, which gives results already in the first years of the change in the use of energy [1, 2 ...

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... Geological Cor- relation, 22/2, 202—218. CSONTOS, L., GERZINA, N., HRVATOVIĆ, H., SCHMID, S. & TO- MLJENOVIĆ, B. (2003): Structure ofthe Dinarides: a working mod- el.– Ann. Univ. Sci. Budapest., Sect. Geol., 35, 143—144. DIMITRIJEVIĆ, M.D. (1997): Geology of Yugoslavia.- Geol. Inst. GE- MINI Spec. ...
    ... A significant amount of sponge spicules together with abun- dant radiolarians in the studicd samples indicate a relatively proximal slope environment (KITESSLING, 1996). 5. DISCUSSION AND CONCLUSIONS After the Late Jurassic obduction and subsequent erosion in the Dinaridic-Hellenic belt, ...
    ... the studied limestone corresponds to the Struganik Limc- stone which originated on the continental slope, in a rela- tively proximal slope environment which is indicated by a significant amount of sponge spicules together with abun- dant radiolarians. The Santonian age of the analyzed sediments ...

  • 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

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... water pressure on the working environment—coal. Nevertheless, geomechanical 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 ...
    ... water pressure on the working environment—coal. Nevertheless, geomechanical 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 ...
    ... “specific bucket-wheel power requirement”. Wagon calculated the specific bucket-wheel power requirement by using power consumption measurements on BWE working. In 1937, Kienast [11] studied the cutting process of bucket chain excavators to determine the optimum slice cross-section for the minimum bucket knife ...

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... of different ruthenium isotopes ranging from 96Ru to 104Ru. The original [RuCl2(bipy)2]Cl (mass 519.8) is apparently converted in the aqueous environment into a new species (mass 569.3), replacing all chloride anions with one more bipy ligand.27 The presence of this peak groups does not disturb ...
    ... abundance of different ruthenium isotopes ranging from °°Ru to '!“Ru. The original [RuCl(bipy)sJCl (mass 519.8) is apparently converted in the aqueous environment into a new species (mass 569.3), replacing all chloride anions with one more bipy ligand.*’ The presence of this peak groups does not \s A 490.3 ...
    ... is mainly due to the presence of a single tryptophan residue (Trp3) which is located on the surface of the enzyme molecule and exposed to the environment.39 All fluorescent spectra of PLA2 solution were recorded in the presence of increasing concentrations of metal complexes. The resulting fluorescent ...

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... ACT_ part1_ v14. pdf. Accessed 2 Aug 2019 European Heat Pump Association (2017) Large scale heat pumps in Europe. Industrial & Commercial Heat Pump Working Group (ICHP). https:// www. ehpa. org/ filea dmin/ red/ 03._ Media/ 03. 02_ Studi es_ and_ repor ts/ Large_ heat_ pumps_ in_ Europe_ MDN_ II_ final4_ ...
    ... essential for ensuring reliable and affordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import depend- ency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a ...
    ... should be directed toward ensuring reliable and affordable energy services, provided with reduced consumption of energy sources, impact on the environment and import dependency (United Nations 2019). Transition to more sustainable systems can be achieved by acting on the demand and supply sides. In ...

  • 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
    ... analysis of both radiolarites and limestones provides information about their depositional setting (e.g., relative water depth, transport regime, environment — e.g., bioturbating biota, oxygen con- tent) and diagenetic overprint. Whereas microfacies analysis of limestones is a common tool to describe ...
    ... remain rare (e.g., Gawlick et al. 2009a, 2016a,b; Krische et al. 2014; Gawlick & Missoni 2015), but the recon- struction of the depositional environment of radiolarites pro- vides a number of answers for the open questions. The investigations of the resedimented Late Triassic oceanic ribbon ...
    ... (Triassic open lagoon, reef belt and transitional facies) is not possible due to the missing facies transitions from the lagoon to the open marinc environment. b — Middle Jurassic westward directed ophiolite obduction, imbrication of the former passive margin and mćlange for- mation. For the position ...

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... РГФ] Mesozoic carbonate rocks in Serbia used as dimension stone | Vesna Matović, Tijana Vojnović Ćalić | Bulletin of Engineering Geology and the Environment | 2016 | | 10.1007/s10064-015-0722-0 http://dr.rgf.bg.ac.rs/s/repo/item/0008250 Дигитални репозиторијум Рударско-геолошког факултета Универзитета ...
    ... Geoinstitut, Beograd, Posebna izdanja 18: 25—26 (in Serbian) Sudar MN, Gawlick HJ, Lein R, Missoni S, Kovacs S, Jovanović D (2013) Depositional environment, age and facies of the Middle Triassic Bulog and Rid formations in the Inner Dinarides (Zlatibor Mountain, SW Serbia): evidence for the Anisian ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... efficiency and economics of adsorption processes such as pressure/temperature swing adsorption. [32] Metrics for adsorption capture include high working capacity and selectivity, low cost, low regeneration requirements, long-term stability, and fast kinetics. Although adsorption- based separation ...
    ... () where w' input indicates the required power into the system per unit mass. This power input is supplied at the pumps to boost the CO2, the working fluid, and the heating medium: W'input= Žiw'pumpcoz, IL+ zl·W-pumpworking fluid. | + zl·W-pumphcaling medium»(sw) i (4) The thermal efficiency ...
    ... and storage has advanced over the years on a small and large scale purposely to remove CO» emissions from the atmosphere to have a sustainable environment and to mitigate global climate crises. Research in this work will provide a comprehensive and detailed information regarding the analysis of ...