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Упит dcterms_subject_txt:geotehnički monitoring"

325 items

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... effectiveness. The final phase in the outlined design process is state evaluation and modification. All parameters of mine ventilation obtained by monitoring have to be compared with designed parameters and when differences are identified, specific changes must be made in the planning process. 2. ...
    ... networks as well as • gas distribution in ventilation network. CFD INVENTS Data acquisition Design Im plem entation and m aintenance System monitoring Fig. 2. Global concept of mine ventilation planing and design The results obtained after the desired analysis by SimVent can be exported to VENTEX ...

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer

    Saša Milanović (2019)
    Geochemistry and Petrology

  • Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima

    Jelena R. Malenović - Nikolić (2016-07-12)
    Efikasnost funkcionisanja sistema upravljanja zaštitom životne sredine u rudarskoenergetskimkompleksima zavisi od stepena sprovođenja usvojene politike zaštiteživotne sredine i primene preventivnih mera zaštite životne sredine. Nedostatakfinansijskih sredstava za unapređivanje tehnologije eksploatacije, transporta, pripreme iprerade energetskih mineralnih sirovina u našim rudarsko-energetskim kompleksima,negativno utiče na ostvarivanje ciljeva zaštite životne sredine, a posledice radnihaktivnosti rudarsko-energetskih kompleksa dovode do smanjenja nivoa kvalitetavazduha, vode i zemljišta...
    rudarsko-energetski kompleks, životna sredina, sistem upravljanja,višekriterijumsko odlučivanje, modeliranje
    ... sredine). Automatski monitoring kvaliteta vazduha na području Republike Srbije, u okviru CARDS projekta „Supply of equipment for air quality monitoring stations, Serbia“ (EUROPEAID / 124394/D/SUP/YU) [152], organizovala je Agencija za zaštitu životne sredine. Operativni monitoring kvaliteta vazduha ...
    ... životne sredine i organizovanje internog monitoringa zagađujućih materija. U okviru ove ekološke perspektive može da se vrši i obaveštavanje javnosti o rezultatima monitoringa ili da se taj postupak sprovodi kao druga dodatna ekološka perspektiva. Monitoring sistem vazduha može da funkcioniše samostalno ...
    ... u Kostolcu, tako i u zvaničnim izveštajima lokalnih, regionalnih i republičkih organizacija i službi koje se bave monitoringom, praćenjem i izveštavanjem o rezultatima monitoringa zagađenja životne sredine. Osim navedenih metodologija, korišćene su i normativne metode, studija slučaja, metoda ...

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... approach is not good enough because it does not go into the structure of the availability itself and requires a high level of IT support in system monitoring. In this sense, this paper will use the fuzzy theory and the corresponding analytic hierarchy process (AHP) multi-criteria analysis to present a ...
    ... safety. Availability is expressed in quantitative indicators, and as such, is a measure of functional safety, and thus of the quality of service. Monitoring and availability analysis are significant because of the known fact that the machine must, above all, be available for operation, in order to realize ...
    ... approach is not good enough because it does not go into the structure of the availability itself and requires a high level of IT support in system monitoring. In this sense, this paper will use the fuzzy theory and the corresponding analytic hierarchy process (AHP) multi-criteria analysis to present a ...

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... vegetative cells, only spores can survive in this way. Microorganisms 2021, 9, 1691 5 of 20 2.4. The Fourth Step: Kinetics of Ureolysis and pH Monitoring The ureolysis rates were determined by Urea/Ammonia (Rapid) Assay Kit (Megazyme, Vienna, Austria) following the assay procedure. Urea broth was ...
    ... which can be a solution for rapid achievement the sufficient spore concentration in further experiments [45]. 3.4. Kinetics of Ureolysis and pH Monitoring Bacteria can promote calcite precipitation by Urea hydrolysis and environment al- kalization through the production of NH4+ and CO3 2− ions. T ...
    ... Microorganisms 2021, 9, 1691 9 of 20 used to define kinetic parameters and fitting the kinetic models. The same process was performed for pH monitoring and concentration of bacteria during the ureolytic activity (Figure 4). Figure 3. The spore rate in TSB nutrient medium with different pH values ...

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... Caphman & Hall: London, UK, 1989; ISBN 0-412-44590-5. 2. _ Stevanović, Z.; Ristić-Vakanjac, V.; Milanović, S.; Vasić, L.; Petrović, B. Značaj monitoringa podzemnih voda u karstu Srbije. In Proceeding;ss of the 7th Symposium on Karst Protection 2011, Bela Palanka, Serbia, 21–22 May 2011; pp. 35-42 ...
    ... og fakulteta Univerzitet u Beogradu, Belgrade, Serbia, 1984. 15. Milanović,S.; Stevanović, Z.; Vasić, L.; Ristić-Vakanjac, V. 3D Modeling, and monitoring of karst system as a base for its evaluation and utilization—A case study from eastern Serbia. Environ. Earth Sci. 2014, 71, 525–532. [CrossRet] ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... Foundation, Evaluation Handbook, available at: www.wkkf.org (accessed november 2013), 1998. [12] Shapiro J., Monitoring and Evaluation, available at: http://www.civicus.org/new/media/Monitoring%20an d%20Evaluation.pdf (accessed 24 april 2014)., 1996. [13] Office of Government Commerce, Managing ...

  • Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)

    Ljiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... transformed by combustion processes [1]. The problems of climate change and greenhouse gas (hereinafter GHG) concentrations are observed through monitoring. various indicators over time. The concentration of CO» in the atmosphere has increased from 294 ppm (parts per million) a century ago to the ...
    ... based on API Compendium methodology is presented in Figure 1. III MODEL – CASE STUDY For thc purposc of presenting the mentioned approach in monitoring and calculation of GHG, a realistic case study of an onshore upstrecam O&G 3company is crcated. Within this company, three major emitters are ...
    ... Combustion emissions of CO»e 2020 mFlowstation mGasPlant mOffice 2021 2022 Figure 7. Mobile Combustion emissions of CO»e 'V CONCLUSION Monitoring and calculation of GHG emissions is the starting point for the long-term goal of preserving the atmosphere. Different industries sectors generate ...

  • Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu

    Predrag Jovančić, Vesna Damnjanović, Dragan Ignjatović, Miloš Tanasijević, Stevan Đenadić (2019)
    Četvrtu industrijsku revoluciju – Industriju 4.0 karakteriše upotreba cyber-fizičkih sistema. Da bi se postigla optimalna strategija održavanja (ali i eksploatacije), neophodno je razviti sisteme koji podržavaju napredne inteligentne sisteme održavanja ili tehnologije pametnog održavanja. Iz toga su proizašli postulati Prediktivnog održavanja 4.0 (PdM 4.0) koji definišu veoma blisku budućnost u oblasti održavanja tehničkih sistema pa i rudarske opreme. PdM 4.0 uključuje iskorišćenje snage veštačke inteligencije za stvaranje stalnog uvida u otkrivanje uzroka i anomalija u radu opreme, koje se ...
    rudarstvo, prediktivno održavanje PdM 4.0, Industrija 4.0

  • FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina

    Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević (2021)
    ... concentration of organic complex, into the aqueous suspension of the NaM clay. Four different concentrations of organic cations were selected for the monitoring of the herbicide adsorption: 17.25 mmol/100 g of Na- montmorillonite (25% of CEC), 34.5 mmol/100 g of Na-montmorillonite (50% of CEC), 51.75 mmol/100 ...
    ... alachlor and metolachlor. Rev. Environ. Contam. Toxicol., 110, 1I—74. DOI: 10.1007/978-1-4684-7092-–5_1 Cohen, S.Z., Eiden, C., Lorben, N.M. 1986. Monitoring ground water or pesticides, in: Garnar, R.C., Honeycure, R.C., Higg, H.N., (Eds.), Evaluation of Pesticides in Ground Water. ACS Symposium Series ...

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Стање квалитета амбијенталног ваздуха на подручју града Београда

    Марко Колачарић (2024)
    У овом раду анализирано је стање квалитета амбијенталног ваздуха на територији града Београда. Анализа се заснива на праћењу података о загађујућим материјама прикупљеним у 2022. години са шест мерних места на територији града. Загађивачи који су обухваћени овом радом су сумпор-диоксид (SO2), азот-диоксид (NO2), честични загађивачи (PM2.5 и PM10), тропосферски озон (О3) и угљен-моноксид (СО). На основу добијених резултата предложене су мере за побољшање тренутног система. Констатовано је прекорачење законских граница на свим мерним местима, за једну или више ...
    мониторинг, анализа, загађивачи, квалитет ваздуха, Београд
    ... quality in the area of Belgrade city Abstract: This paper analyzes the air quality status in the city of Belgrade. The analysis is based on monitoring data of pollutants collected in 2022. from six measurement sites within the city. The pollutants covered in this study are sulfur dioxide (SO) ...
    ... the current system are proposed. It was found that legal limits were exceeded at all measurement sites, for one or more pollutants. Keywords: monitoring, analysis, pollutants, air quality, Belgrade CriHcak cJiBHKa: Cmaka 1 Teorpadicku nonoxaj rpana Beorpana Cmaka 2 Knace craOuzaocTu arMocO(epe ...
    ... o0anBe3a H3 Mel)yHapojnHHx yroBopa [1]. IlIocme/gbHx TOJHHa CC KOJL MOHHTODpHHTa IHOJaBJbyje H HOJaM "VCAIJIAHIEHH MOHMHTOPHHI" (enrm. Compliance Monitoring). OH He pejcTaBJba HeCKy TIOCCOHy BPpCTy MHJMH THH MOHHTOpHHra, aH e(uMHHMMHe HauHMH Kopumihema H ripHKa3HBaMba noOOHJjeHMX peyynrara. HaHMe ...

  • 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

  • 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 better reproducibility. The sample was applied as 1.5 ml droplet on the sample plate and dried immediately under a warm stream of air. For monitoring the changes in mass spectra in the m/z range 10 000–15 000, fresh solution of PLA2 c = 0.02 mg ml�1 in 50 mM Tris-HCl buffer (37 1C and pH = 8 ...
    ... favor of better reproducibility. The sample was applied as 1.5 ul droplet on the sample plate and dried immediately under a warm stream of air. For monitoring the changes in mass spectra in the m/z range 10000-15000, fresh solution of PLA, c = 0.02 mg ml"! in 50 mM Tris-HCl buffer (37 °C and pH = 8.5) was ...
    ... activity on the aggregation state, structure and surface concentration of the phospholipid substrate.32 There are numerous methods established for monitoring the PLA2 activity, but they usually require radioactive or fluorescence labeling of the substrate, which implies the use of a non-native substrate ...

  • 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

  • The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis

    Ljiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua (2021)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change