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Упит dcterms_subject_txt:Water supply

231 items

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... omputer Applications for Water Supply and Distribution,  Leicester Polytechnic, UK, September 8‐10. (на енглеском)  279. Todini, E., Pilati, S. 1988. A gradient method for the analysis of pipe networks. in: B.  Coulbeck, C.H. Orr (Eds), Computer applications in water supply, John Wiley & Sons  Rese ...
    ...  405‐427. (на енглеском)  110. Fanning, J.T. 1877. A practical treatise on water‐supply engineering. Van Nostrand, New  York. (на енглеском)  111. Fankhauser, С., Tepic, С. 2007. Can poor consumers pay for energy and water? An  affordability analysis for transition countries. Energy policy 35(2), 1038–1049 ...
    ...  2521‐2533. (на енглеском)  161. Kessler, A., Shamir, U. 1989. Analysis of the linear programming gradient method for  optimal design of water supply networks. Water Resources Research 25(7), 1469–80. (на  енглеском)  162. Knutsson, D., Sahlin, J., Werner, S., Ekvall, T., Ahlgren, E.O. 2006. HEATSPOT—a  ...

  • Ефикасност дистрибуције и коришћења природног гаса у домаћинствима

    Dejan Brkić (2010-03-30)
    Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...
    prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm
    ... omputer Applications for Water Supply and Distribution,  Leicester Polytechnic, UK, September 8‐10. (на енглеском)  279. Todini, E., Pilati, S. 1988. A gradient method for the analysis of pipe networks. in: B.  Coulbeck, C.H. Orr (Eds), Computer applications in water supply, John Wiley & Sons  Rese ...
    ...  405‐427. (на енглеском)  110. Fanning, J.T. 1877. A practical treatise on water‐supply engineering. Van Nostrand, New  York. (на енглеском)  111. Fankhauser, С., Tepic, С. 2007. Can poor consumers pay for energy and water? An  affordability analysis for transition countries. Energy policy 35(2), 1038–1049 ...
    ...  2521‐2533. (на енглеском)  161. Kessler, A., Shamir, U. 1989. Analysis of the linear programming gradient method for  optimal design of water supply networks. Water Resources Research 25(7), 1469–80. (на  енглеском)  162. Knutsson, D., Sahlin, J., Werner, S., Ekvall, T., Ahlgren, E.O. 2006. HEATSPOT—a  ...

  • Navigacija budućnosti: poslovni rizici i prilike u rudarskoj industriji

    Petar Marković, Dejan Stevanović, Mirjana Banković, Vuk Lazić (2024)
    Sektor rudarstva i metalurgije se globalno suočava sa brzo evoluirajućim okruženjem u 2024. godini, koje karakteriše jedinstvena međusobna zavisnost rizika i prilika. Sektor je u središtu globalne energetske tranzicije, uz rastuću potražnju za kritičnim mineralnim sirovinama poput litijuma, nikla i bakra, koji su od suštinskog značaja za tehnologije obnovljive energije i električna vozila. Međutim, ova sve veća odgovornost donosi brojne izazove, uključujući pojačanu pažnju na ekološke, društvene i upravljačke (ESG) faktore, fizičke i tranzicione rizike uzrokovane klimatskim promenama, i ...

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... Coolant hose leak 5 270, 410, 1487, 1736, 2056 1, 1.2, 3.5, 4.5, 6.8, Cooling fan blades bearings 3 1363, 2019, 2583 2.5, 3.5, 4.8 Disruption of fuel supply 4 183, 336, 649, 670 0.5, 0.5, 0.8, 2.2 Belt drive 10 58, 89, 146, 152, 259, 375, 456, 573, 1401, 1428 0.3, 0.5, 0.5, 0.7, 0.8, 0.9, 1, 1.2, 1.2 ...
    ... using the proposed model suggests that individual parts of the crushing machine have high failure risk levels (e.g., the interruption of the fuel supply to the diesel engine). This is a seemingly innocuous problem, but it can cause massive problems in the processes of crushing and screening rock mass ...
    ... 12, 525 2 of 26 often has negative effects on the environment in the vicinity of a mining complex: noise, vibrations, gases, liquid, and polluted water leakage are the most common adverse effects on the environment. According to standard ISO31000, risk is defined as the “effect of uncertainty on o ...

  • Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda

    Đorđije M. Božović (2023)
    Predmet istraživanja doktorske disertacije su bunari sa horizontalnim drenovima beogradskog izvorišta podzemnih voda, drugog najvećeg izvorišta ovog tipa na svetu, čiji je režim rada opterećen procesima intenzivnog starenja prisutnog od samog početka formiranja izvorišta, početkom 1950‒ih godina. Istraživanja sprovedena u okviru izrade disertacije su imala za cilj definisanje nove metodologije izučavanja procesa mehaničkog i biohemijskog kolmiranja drenova izradom detaljnih 3D numeričkih hidrodinamičkih modela, upotrebom postojećih, dostupnih i široko rasprostranjenih računarskih programa. Istraživanja su realizovana simulacijom ostvarenog režima podzemnih voda ...
    modeliranje podzemnih voda, hidrauličke karakteristike drenova, koeficijent propusnosti drenova, prifilterska zona drena, hidraulički otpori na drenovima, kolmiranje drenova, ulazne brzine podzemnih voda, MODFLOW, CLN Package
    ... Kaufhold, S., 2016. Wellbore skin in mine dewatering and drinking water supply: field observation, mineralogy and hydraulic effect. Conference: International mine water association 2016 At: Leipzig, Germany, Volume: Mining Meets Water – Conflicts and Solutions. 213 Wels, C., Mackie, D., Scibek, J ...
    ... activities. British Columbia Ministry of Environment, Water Protection & Sustainability Branch. 214 Wenzel, L.K:, 1935. The Thiem method for determining permeability of water‒bearing materials. U.S. Department of the Interior, Geological Survey, Water Supply Paper. DOI: 10.3133/wsp679A 215 Wett, B., Jarosch ...
    ... 4055–4091. DOI: 10.5194/hess-26-4055-2022 83 Houben, G.J., Sander, J., 2020. Preventing the growth of iron bacteria in water wells by copper and silver coating. Water Supply, IWA Publishing, 20 (4), 1195–1206. DOI: 10.2166/ws.2020.033 84 Houben, G.J., 2003. Iron oxide incrustations in wells. Part ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Bucharest. JEMCOV I., 2007: Water supply potential and optimal exploitation capacity of karst aquifer systems. Environmental Geology. Springer, DOI: 10.1007/s00254-006- 0393-z STEVANOVIĆ Z., JEMCOV I., MILANOVIĆ S., 2007: Management of karst aquifers in Serbia for water supply. Environmental Geology. ...
    ... complex geophysical exploration. Proccedings of the IAH conference "Water resources and environmental problems in karst", p. 555–562, Belgrade/Kotor. DOKMANOVIĆ P., JEMCOV I., 2007: Neogene basin aquifers as an optimal water- supply resource for the small and middle size settlements in Serbia. Proceedings ...
    ... Z., KRUNIĆ O., PETROVIĆ B., 2012: Water Management Failure under Complex Hydrogeological Conditions in the Kolubara District, Serbia. Hydrogeology Journal, DOI:10.1007/s10040-012-0856-0 STEVANOVIĆ Z., DOKMANOVIĆ P., MILANOVIĆ S., POLOMČIĆ D., 2012: Water supply management measures in test areas ...

  • The ‘Umka’ landslide

    Uroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević (2024)
    We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...
    rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoring

  • 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
    ... Rcejected ·L„·l — Electtolysis: —> \.nu Ca(OH) c t >—< CaCO, Desalination —— Fresh water :I“"”:" —E y utilization MACO. [ , Sulfur Nea water l?uullnn/.m w — — CaSO, utilization Flue un(( O„SO,) —— Water treatmeni —— HBauification — Gas treatment — Utilization Figure 3.2 Desalination process ...
    ... injection [2]. As formation water becomes saturated with dissolved CO- the density rises and sinks in the reservoir, a process that effectively stores the CO-. The rate of dissolution depends on the amount of mixing of CO- and formation water. Diffusion of CO into the water is assisted by accumulations ...
    ... this, a hydrostatic column is formed in the well. For each compression stage water is knocked out at 30%C. Since the ability to dissolve water is lower at 32 bar (third stage) than at the wellhead, there is no free water at the wellhead therefore limiting any corrosion and hydrate formation. To be ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... detecting issues with submersible pumps in various industrial applications. In power plants, these sensors enable precise measurement of pressure in water supply systems and condensers, which is essential for the safety and efficiency of submersible pump operations. Proper pressure monitoring allows for ...
    ... quantity of fluids or gases passing through a system. Their applications span various sectors such as the energy industry, chemical manufacturing, water supply and sewage, automotive 33 industry, and many others. Flow sensors help in optimizing processes, conserving Tresources, and ensuring system ...
    ... between two sensors, which is proportional to the flow rate. Ultrasonic sensors are suitable for applications involving liquids and gases, such as in water management systems and industrial processes. 34 ' ··o Serija Q45U Serija 518 RUC30/100/300/600 M2SU Figure5.5 Ultrasonic sensors 3.Elec ...

  • Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)

    Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović (2020)
    Geochemistry and Petrology

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... their support and encouragement of this work. REFERENCES BÁBEK, O., MIKUÁŠ, R., ZAPLETAL, J. & LEHOTSKÝ, T. (2004): Combined tec- tonic-sediment supply-driven cycles in a Lower Carboniferous deep-marine fore- land basin, Moravice Formation, Czech Republic.– Int. J. Earth Sci., 93/2, 241–261. doi: ...
    ... The sustained hyperpycnal flows which enter the basin last rela- tively long if the sediment-laden river discharge is sufficient to maintain the water density difference, usually for several days (MULDER & SYVITSKI, 1995). In contrast, remobilization of the sediment by turbidity currents is manifested ...

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... amount of paraffin in the production fluid, the number of artificial methods that can be used is reduced. Parameter C5 represents water cut. With the increase in water in the production fluid, methods that can produce larger quantities of fluid are more widely used. 3.2. Synthesis Part of the Model ...
    ... the selected individual method [9]. The module of economic evaluation uses detailed designing equipment, surface and underground equipment, energy supply, and previously determined optimal production to calculate the profitability of each method. The calculations used are standard project evaluation ...
    ... • Production operating problem parameters (C), which are: (C1) corrosion, (C2) solid particles, (C3) gas oil ratio—GOR, (C4) paraffin, and (C5) water cut. Figure 1 shows the conceptual model of an expert system for optimized selection of an artificial lift method evaluation on the base of fuzzy ...

  • 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

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • 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
    ... (Krische et al. 2014; Gawlick & Missoni 2015). The absence ofribbon radio- larites on the continental margin is due to the fact that supply from shallow-water carbonate ramps and platforms led to the accumulation of a thick pile of carbonate mud on the distal shelf and partly even in the proximal ...
    ... subsided continental margins, where these Late Anisian to early Late Ladinian radiolarites were widespread and also formed in relatively shallow water depths (Gawlick et al. 2012a; Gawlick & Missoni 2015). Therefore, Late Anisian to early Late Ladinian radiolarites either derive from the distal ...
    ... formed in front of the obducted ophiolites in trenches or foredeeps, or C) an original sedimen- tary olistostrome and mass transport dominated deep-water basin fill in front of an advancing nappe stack later incorpo- rated in the nappe stack forming an olistostromal carpet below the overthrusted ...

  • Upravljanje resursima podzemnih voda severne Bačke

    Bojan B. Hajdin (2013-03-07)
    Vodosnabdevanje gradova i naselja severne Bačke vrši se u potpunosti iskorišćavanjempodzemnih voda. Najznačajnije količine podzemne vode namenjene za piće zahvatajuse iz izdani u vodonosnim pleistocenskim naslagama koje su poznate kao osnovnivodonosni kompleks, dok su danas u vodosnabdevanju manje zastupljene vode izizdani u pliocenskim sedimentima i prve, slobodne izdani rasprostranjene plitko ispodpovršine terena.Pored snabdevanja stanovništva, veliki potrošači podzemne vode su i industrijskapreduzeća, a zbog loših uslova i nerazvijenih sistema za navodnjavanje sve veći korisnicivoda prve izdani postaju i poljoprivredni proizvođači.Geološka ...
    resursi podzemnih voda, vodosnabdevanje, održivo upravljanje, osnovni vodonosni kompleks, termomineralne vode, monitoring podzemnih
    ... words: groundwater resources, water supply, sustainable management, principal water-bearing complex, thermomineral water, groundwater monitoring SCIENTIFIC FIELDS: Geological engineering SPECIAL TOPICS: Management of groundwater resources and water supply UDC: 005.1:31 55:551 ...
    ... identified. Domestic and European legislation contained in the Water Framework Directive are mentioned in the 2030 water demand projection analysis and in the alternative water supply scenarios. A monitoring network, organization and types of water regime observations are suggested, supported by related ...
    ... expansion of the water supply in northern Bačka will require connection of small communities with the central distribution system. This will involve improvement of water management at the point sources, monitoring and modernisation of the distribution systems in order to reduce water losses. The given ...