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Упит dcterms_subject_txt:groundwater control system

800 items

  • Modern self-propelled surface drill rigs for drilling small diameter holes in mining and construction operations

    Milanka Negovanović, Lazar Kričak (2021)
    Приликом одређених рударских или грађевинских радова потребно је извршити минирање применом бушотина малог пречника. Раније, бушење бушотина малих пречника се изводило углавном ручним бушилицама или лаким лафетним бушилицама нa одређеним нoсачима. Проблеми у овим случајевима били су капацитет бушења, бушење већих дужина бушотина и посебно безбедност оператера на неприступачним теренима, где је његово присуство било неопходно. Данас постоје модерне самоходне бушилице за бушење минских бушотина малог пречника, које су у потпуности даљински управљане. Радио даљинска контрола омогућава да се ...
    Бушилице,бушотине малог пречника, бушење, минирање,изградња,минирање негабарита, радио даљинска контрола

  • Implemented Stage Fracturing Technique To Improve Oil Production In Nubian Sandstone Of North Gialo, Libya

    Fandi Emad I. M., Leković Branko, Gazal Badees, Elhaddad Elnori, Al Saghr Abdulbaset (2018)

  • Implemented Stage Fracturing Technique To Improve Oil Production In Nubian Sandstone Of North Gialo, Libya

    Fandi Emad I. M., Leković Branko, Gazal Badees, Elhaddad Elnori, Al Saghr Abdulbaset (2018)

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... namely a non-linear multiple regression, an artificial neural network, and an adaptive neuro-fuzzy inference system, in order to estimate the uniaxial compressive strength of rock. Grey system prediction models were developed by Xiaobo Xiong [3] for forecasting rock tunnel displacement considering the ...
    ... over the time of observation. Measurements for t = 0, 1, . . . , 5 are used to create a forecast model, while the measurement for t = 6 is used as a control series. Detail calculation is provided for the x coordinates. Figure 7 represents x coordinates of the marker 10 obtained by observation. The inputs ...
    ... 17. Song, Q.; Chissom, B.S. Fuzzy time series and its models. Fuzzy Sets Syst. 1993, 54, 269–277. [CrossRef] 18. Zadeh, L.A. Fuzzy sets. Inform. Control 1965, 8, 338–353. [CrossRef] 19. Zadeh, L.A. The Concept of a Linguistic Variable and its Application to Approximate Reasoning. In Learning Systems ...

  • Some examples of interactions between certain rare earth elements and soil

    Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski (2021)
    Freundlich adsorption isotherm, sequential extraction, metallic ions, ICP-OES
    ... hydrofluoric acid (MERCK) were added. The samples were digested by microwave digestion (CEM Microwave Digestion System) 2×15 min with cooling between two digestions for 15 minutes. Control blank was formed of the acids added. Upon digestion and cooling the solutions were filtered into 50 mL volumetric ...
    ... bottles at rotational shaker with 100 mL of 1 mol L-1 ammonia-acetate solution each. The pH value of obtained suspensions amounted to about 7. The control test was formed of 100 mL extraction agent. Extraction at rotational shaker lasted for two hours. Upon extraction the samples were left to age for ...
    ... to the initial bottles. Phase III: to each soil from Phase II, 50 mL of 0.4 mol L-1 oxalic acid and 0.4 mol L-1 ammonia oxalate was added. The control test was made up of the extraction solutions. At rotational shaker the extraction lasted for nine hours, following which the suspensions were left ...

  • Maximizing the net present value by applying an optimal cut-off grade for long-term planning of the copper open pits

    Kržanović Daniel, Kolonja Božo, Stevanović Dejan (2015)

  • 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
    ... temperatures and pH values [18]. Sporosarcina pasteurii DSM 33 was used as a positive control for the MICP through ureolysis, while carbonate-induced bacterium Bacillus pseudofirmus DSM 8715 was a negative control for ureolytic activity. The mentioned groups of bacterial isolates were well as referent ...
    ... presence of bacteria with biomineralization capability in soils, freshwaters found in lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater and saline habitats has been related to the formation of different minerals around living cells under varied environmental conditions. Due to this ...
    ... presence of bacteria with biomineralization capability in soils, freshwaters found in lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater and saline habitats has been related to the formation of different minerals around living cells under varied environmental conditions. Due to this ...

  • 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

  • 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

  • Need to Improve the Natural Aggregate Resources Supply in the City of Belgrade (Serbia)

    Simić Vladimir, Abramović Filip, Andrić Nevena, Delić Ivana, Miladinović Zoran, Životić Dragana (2016)

  • Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom

    Lidija Beko, Ivan Obradović, Ranka Stanković (2015)
    ... research in Europe, ed. Y. Ruiz de Zarobe & R. M. Jiménez Catalán, 112-129. Bristol: Multilingual Matters. Nation, Paul. 1998. Helping learners take control of their vocabulary learning. GRETA 6(1): 9-18. Nation, Paul. 2003. Effective ways of building vocabulary knowledge. ESL Magazine 4(3): 22-24. ...
    ... approach through an export of its subsets to the Moodle e-learning environment. (Stanković et al 2012, e-Learning). In search of acceptable flashcard system, we have opted for in-house development in order to incorporate all of the platforms used at the Faculty, such as Moodle and the terminology database ...
    ... RudOnto. The ideas and positive experiences gained by users of the Anki 2.01 tool have significantly defined further development. The Quizlet2 system, with its outstanding interface, has also been tested. However, it was not possible to integrate it with the existing student accounts and LMS Moodle ...

  • Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić (2019)
    Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...
    мио-плиоценска геодинамика, јужни Панонски басен, Авалски и Торлак хорст, Белопоточки трог, Србија
    ... main trends of the fault network. First, the (F1) fault system is generally oriented in a NW – SE direction (Fig. 17a, b). In the study area, the Topčiderska Reka (TR), Zavojnička Reka (ZF) and Kaludjerica (KF) faults belong to this system. Later, from the post-Sarmatian time, some of them were ...
    ... events these faults were reactivated (MAROVIĆ et al., 2007; see Fig. 18). The younger, second fault system (F2) is related to the formation and later evolution of the Pannonian ba- sin. The (F2) faults system orientation reflects a general ENE- WSW direction with a pronounced NE-SW direction (Fig.17a, b) ...
    ... In the study area, the Rakovica (RF), Beli Potok (BP) and Torlak (TO) faults are recognized within this system. They are responsible for the dissection of the older faults from the F1 system (Fig. 17a) and along these ENE – WSW oriented faults the block structures with pronounced vertical movements ...

  • 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

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... noise for the day—evening period (coordi- nates are given in the Gauss-Kruger system). Figure 3. Results of modeling the spatial dispersion of noise for the night period (coordinates are given in the Gauss-Kruger system). Energies 2021, 14, 6174 9 of 15 The results of the partial noise ...
    ... Environ. Med. 2014, 56, e108–e130. 63. O’Neal, R.D.; Hellweg, R.D.; Lampeter, R.M. Low frequency noise and infrasound from wind turbines. Noise Control. Eng. J. 2011, 59, 135. 64. Pleban, D.; Radosz, J.; Smagowska, B. Noise and Infrasonic Noise at Workplaces in a Wind Farm. Arch. Acoust. 2017, ...
    ... Hungary. The central part of the location is situated at 45°56′02.51″ N i 19°41′07.29″ E (more detailed coordinates in the Gauss-Kruger coordinate system are given in Figures 2 and 3). Figure 1. Position and spatial organization of the planned Maestrale Ring wind farm. (Source: Google Earth with ...

  • 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
    ... energy sources E i,RES Energy content of input to the system of the ith renewable energy carrier Qext,RES Externally supplied heat produced from renewables Kp,dh Carbon dioxide emission coefficient E i Energy content of input to the system of the ith energy carrier Kpi Primary CO2 emission ...
    ... Availability of heat energy n Number of inhabitants q PE Primary energy savings in ith DH system PE Population equivalent η Represents the efficiency of heat production in the existing DH system Introduction Cities are responsible for more than two-thirds of the world’s energy consumption ...
    ... energy source. In the cit- ies, almost 40% of produced heat is delivered to the sew- age system as waste heat (Hepbasli et al. 2014). It has been estimated that the daily amount of wastewater delivered to sewage system per person comprises 85% of the total amount of persons daily water demand (Hepbasli ...

  • Environmental Noise Impact Assessment for Large-Scale Surface Mining Operations in Serbia

    Uros Pantelic, Petar Lilic, Aleksandar Cvjetic, Nikola Lilic (2023)
    Noise emissions are a significant environmental impact caused by the mining industry in all technological phases of surface mining, mineral processing, and waste disposal. This paper presents the role of noise impact assessment and control in large-scale surface mining operations. Mine planning develops the model of mining operations, ore excavation, and waste dumping scheduling and processing rates, including spatial distribution of mining activities. Such a level of mine planning requires an environmental impact assessment study. This can be achieved ...
    mine planning, noise impact assessment, mining, noise mapping, environmental impact assessment

  • Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma

    Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković (2013)
    ... therapy but were lost to follow-up were excluded from this study. Patients were selected and staged according to the Union for International Cancer Control (IUCC) 7th edition of TNM classi- fication.25 Patients’ categorization into risk groups was made ac- cording to the pathologist’s reports and the 2006 ...
    ... sampling. Those pa- tients who underwent initial treatment in our institution were treated according to the protocol of diagnostics, treatment, and control of malignant thyroid tumors.26 This protocol suggests that all DTC patients including DTM should be treated with total thyroidectomy followed by RAI ...
    ... West Sussex, England: Blackwell Publishing; 2010:58Y62. 26. Stefanovic LJ, Guduric B, Sljapic N, et al. Protocols of diagnostics, treatment and control of malignant thyroid tumors at the Institute of Oncology in Sremska Kamenica (in Serbian). Oncol Arch. 1994;2:101Y107. 27. Pellegriti G, Scollo C ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... coming period. A high value of the assumed obligation in the transport sector, with short deadlines for establishing a legal framework, a system for control and verification of the origin and quality of biofuels, as well as the lack of industrial capacity for production of the 2 generation biofuels ...
    ... introduction of new technological systems in agriculture. A significant increase in funds is envisaged for the improvement of the food safety control system through the co-financing of veterinary services and plant protection. IPARD II programme mainly supports viable agricultural holding and private ...
    ... improvement and the deployment of available RES include the lack of regulations for the design, construction, control and installation of devices using RES, as well as the fact that distribution system operators are not obliged to prioritise the producers using RES. At the same time, no modifications within ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... Serbian developed within the HLT Group. Namely, the system of morphological dic- tionaries of Serbian, the Serbian wordnet, and parallel and aligned texts. They are the basic resources around which the WS4LR and WS4QE tools were built. A. The system of morphological dictionaries The format chosen ...
    ... still under de- velopment, their dimensions are currently more modest. The aforementioned dictionaries compose the system of morphological dictionaries of Serbian – SMD. This system of dictionaries is extremely important given the very rich morphology Serbian shares with other Slavonic languages ...
    ... resources and tools presented were also implemented for improvement of spatial data search in Ge- olISS (Geological information system of Serbia) [13]. The system was development by the Faculty of Mining and Ge- ology and funded by the Serbian Ministry of Environment Protection. During 2007 ...