Претрага
2166 items
-
Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)
Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD... analyses, and Supplementary Information File S2: TEM-EDS analysis of the oxidised and reference arsenopyrite sample (Figuure S1). Author Contributions: Conceptualisation, LJ., A.P. and J.Z.; methodology, J.Z. and AŠ. (Andreja Šestan); software, A.Š. (Aleš Šoster); validation, LJ., A.P., A.K. and J.Z ...
... were recorded with a slow-scan CCD camera (Orius SC1000, Gatan Inc., Pleasanton, CA, USA) and processed and analysed by Digital Micrograph software (v3.1, Gatan Inc., Pleasanton, CA, USA). 3. Results and Discussion 3.1. X-ray Pouwder Diffraction (XRPD) In total, 14 samples were analysed by X-Ray ...
... A.K., AŠ. (Andreja Šestan) and J.Z.; investigation, LJ.; resources, A.P.; data curation, LjJ. and J.Z.; writingz— original draft preparation, 1.J., A.P., A.K., AŠ. (Andreja Šestan), and A.Š. (Aleš Šoster); writing— review and editing, LJ., A.P., AŠ. (Aleš Šoster) and J.Z.; visualisation, J.Z.; ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
-
Flyrock induced by blasting in surface mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock induced by blasting in surface mining" in Rudarski glasnik, Beograd : Rudarski institut (2022). https://doi.org/10.25075/BM.2022.05
-
Parameters for defining the oil wells optimal production in artificial lift method application
Danilović Dušan, Karović-Maričić Vesna, Leković Branko, Crnogorac Miroslav, Tanasijević Miloš (2016)Danilović Dušan, Karović-Maričić Vesna, Leković Branko, Crnogorac Miroslav, Tanasijević Miloš. "Parameters for defining the oil wells optimal production in artificial lift method application" in Tehnika 71 no. 2, Beograd:Савез инжењера и техничара Србије (2016): 209-214
-
Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
-
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... ion, pH value and cell concentration prediction models, Table S3: The “goodness of fit” tests for amount of precipitate, pH value and reduction of Ca2+ ions prediction models. Author Contributions: Conceptualization, O.Š. and S.M.; methodology, A.T., A.R. and D.C.; software, L.P. and B.B.; validation ...
... [CrossRef] 21. Mitchell, A.C.; Ferris, F.G. The coprecipitation of Sr into calcite precipitates induced by bacterial ureolysis in artificial groundwater: Temperature and kinetic dependence. Geochim. Cosmochim. Acta 2005, 69, 4199–4210. [CrossRef] 22. Connolly, J.M.; Jackson, B.; Rothman, A.P.; Klapper ...
... XRD results are processed using Rigaku PDXL 2: Integrated powder X-ray diffraction software, Version 2.8.3.0. (Rigaku Corporation, Tokyo, Japan) as well as card standards (calcite: 01–072–1652, vaterite: 01–075–9355, and vaterite: 01–075–9356). The chemical bond vibrations during FTIR analysis were recorded ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691
-
A tool for identifying the criticality in the disordered systems with metastable dynamics
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević. "A tool for identifying the criticality in the disordered systems with metastable dynamics" in Physica A: Statistical Mechanics and its Applications, Elsevier BV (2021). https://doi.org/10.1016/j.physa.2021.125883
-
Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex
Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males. "Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2024). https://doi.org/10.2298/GABP240116003S
-
Permanent GNSS monitoring of landslide Umka
Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...... Highway Institute and company Vekom. The detailed descriptions of the technical part and the main characteristics of the established automated GNSS monitoring system can be find in Erić et al. [6]. Generally, the Umka monitoring system consists of GNSS network and supporting software solutions. The ...
... Leica Geosystems software solutions: GNSS Spider and GeoMoS (Geodetic Monitoring System), used in order to monitor the dynamics of landslide in real time, with observation rate of 30 seconds. The observed GNSS monitoring results, as well as the correlations between precipitation and Sava river level ...
... technology for infrastructure facilities and terrain stability monitoring“, financed by Ministry of Education, Science and Technological Development of the Republic of Serbia, and the collaboration between University of Belgrade, Faculty of Mining and Geology and Faculty of Civil Engineering, Institute ...Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović. "Permanent GNSS monitoring of landslide Umka" in International Conference on Contemporary Theory and Practice in Construction XIV Stepgrad, University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy (2020). https://doi.org/10.7251/STP2014091S
-
Primena programa UVSZ pri zaštiti od miniranja
Primena energije eksploziva tj. miniranje, predstavlja osnovni način eksploatacije čvrstih mineralnih sirovina u rudarstvu. Miniranjem se postižu vrlo povoljni tehnoekonomski pokazatelji, koje nažalost prate i negativni efekti miniranja. U cilju zaštite životne sredine potrebno je za svaku radnu sredinu odrediti jednačinu oscilovanja stenske mase pri miniranju. Ova jednačina definiše promenu brzine oscilovanja stenske mase u zavisnosti od rastojanja, količine eksploziva, uslova izvođenja miniranja i geoloških karakteristika stenske... Uzorkovanje (sampling): 1000, 2000 ili 4000 [Hz] • Dužina snimanja: 1–100 s ili automatska dužina • Transfer podataka: Vibraloc PC software • Analiza podataka: UVSZ i UVSZA software. U pakovanje Vibraloca uklju en je UVSZ program, koji se koristi za analizu i prezentaciju podataka merenja na ra unaru ...
... Uzorkovanje (sampling): 1000, 2000 ili 4000 [Hz] DuZina snimanja: 1-100 s ili automatska duZina Transfer podataka: Vibraloc PC software Analiza podataka: UVSZ i UVSZA software. U pakovanje Vibraloca ukljucen je UVSZ program, koji se koristi za analizu i prezentaciju podataka merenja na ra¢unaru i UVSZA ...
... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić. "Primena programa UVSZ pri zaštiti od miniranja" in XIII skup privrednika i naučnika SPIN’21, Industrija 4.0 – mogu nosti, izazovi i rešenja za digitalnu transformaciju privrede, Univerzitet u Beogradu, Fakultet organizacionih nauka (2021)
-
Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
-
BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations
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 ...Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina. "BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations" in 17th International Conference of the open and underwater mining of minerals, Sts. Constantine and Helena Resort, Varna, 18-22 September, Bulgaria, Sofia, Bulgaria : Scientific and Technical Union of Mining, Geology and Metallurgy, (2023)
-
Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach
Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...... conducted under nitrogen flow (50 mL/min) by DSC 1 (Mettler-Toledo AG, Analytical, Greifensee, Switzerland). The onset and peak temperature, and enthalpy were evaluated by STAR® SW 12.10 software. 2.2.2. Nanocrystal Dispersions Preparation For nanocrystal dispersions preparation, a modified wet ball milling ...
... of 5.1 N/m. The cantilever driving frequency was around 150 kHz during the measurements. For the analysis of the taken topography and “error signal” AFM images, the software Image Analysis 2.2.0 (NT-MDT) was used. Differential Scanning Calorimetry (DSC) Around 2 mg of the dried samples of nanocrystals ...
... as a post hoc test for three results groups. Statistical analysis was performed using IBM SPSS Statistics software (v. 25). p < 0.05 was considered as statistically significant. 3. Results and Discussion 3.1. Preformulation Studies Substance DK-I-60-3 appeared as a yellow crystalline powder, with ...Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach" in Pharmaceutics, MDPI, Basel, Switzerland (2021). https://doi.org/10.3390/pharmaceutics13081188
-
Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite
Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...... titanium and chromium. Crocidolite is called “blue asbestos” and has been selected for thermal insulation [42]. With the aid of the PDXL 2 software, it is possible to identify a larger amount of tremolite and minor amounts of diopside, actinolite, talc (ali magnesium-based aluminosilicates) and quartz ...
... using, the ZAF calculation method as implemented in the Iridium Ultra software (IXRF Systems, Austin, TX, USA). The validity of measurements was monitored by applying, the same procedure to “Corning Museum B, C and D” and American “National Bureau of Standards (NBS 620)” certified glass-reference ...
... specimens were rotated during data collection with a speed of 60 rpm. PDXL 2 software (version 2.8.3.0), Rigaku Corp., Tokyo, Japan) was used for the powder diffraction data analysis [12]. The analyzed surface area (20 x 20 mm?) and the fine powdering, allowed one to record spectra representative of all ...Philippe Colomban, Aleksandar Kremenović. "Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite" in Materials, MDPI AG (2020). https://doi.org/10.3390/ma13163597
-
Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia
Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović . "Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia" in Groundwater: Occurrence and Significance for Human Health, CRC Press, Balkema - Taylor & Francis Group (2014)
-
Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area
Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić . "Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area" in Carpathian Journal of Earth and Environmental Sciences (2016)
-
Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... be considered in classification modeling. Cracknell and Reading (2014) demonstrated that among the five algorithms presented, the support vector machine (SVM) algorithm exhibited the highest computational time, while the RF and artificial neural netvorks (ANN) algo- rithms shared the second ...
... overfitting (unlike standard random trees) and is relatively fast in comparison to other classification methods, such as boosting techniques. In addition, the RF algorithm is available as a package within most of the popular open-source statistical software pack- ages (R, Weka or JASP). According ...
... Kanevski M, Pozdnukhov A, Timonin V (2009) Machine Learning for Spatial Environmental Data: Theory. CRC Press, Boca Raton, USA, Applications and Software Karajovanovik M, Hadži-Mitrova S, (1975): Basic geologic map of Former Yugoslavia 1:100 000, explanatory booklet for the sheet of Titov Veles ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
-
Valorization of non-balanced coal reserves in Serbia for underground coal gasification
David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...... of the processes, are exposed to further pollution in their cir- culation. Pollutants are all organic, inorganic and similar substances, or components that are in natural or artificial conditions brought into the underground aquifer, or they are continuously introduced into the aquifer. Their origin ...
... natural conditions of the environment, to artificial, deliberate or unintentional introduction of them into the outlet waters. In the treatment of wastewater, there is sometimes a need for additional, detailed re- search which should clarify the hydrogeological and hydro-chemical environment immediately ...
... activated, and the coke burns the surrounding coal and forms the reaction zone. Exothermic reactions (at f > 600 "C) are predominantly occurring in UCG process, and the resulting gas mixture can contain 8-20% CO», 5-20% CO, 10-20% H», and 2-5% CHoa. Ifthe gas mixture contains too much CO., and possibly ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
-
Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study
Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...... under 400 x magnification with the digital camera and processed with the appropriate software. 2.9. Fourier transform infrared (FT-IR) spectroscopy The interactions between lyoprotectants and nanocrystal stabilizers were analyzed by Fourier transform infrared spectroscopy (FT-IR). The analysis ...
... using IBM SPSS Statistics software (v.25). 2.5. Differential scanning calorimetry (DSC) To determine the glass transition temperature of the maximally freeze-concentrated solution (Tg'), liquid samples were cooled from 25 "C to -80 "C at a rate of -0.5 "C/min and then heated to 50 "C at a rate ...
... CuKou „ radiation source (U=40 kV and I=30 mA). Data were acquired in a 20 range of 3-40% using a low background single crystal silicon sample holder to minimize background. Results were analyzed using PDXL2 (v. 2.8.30) integrated X-ray powder diffraction software. 2.7. Scanning electron microscopy ...Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study" in European Journal of Pharmaceutical Sciences, Elsevier BV (2023). https://doi.org/10.1016/j.ejps.2023.106557
-
Одређивање оптималне производње дубинске пумпе на клипним шипкама
Небојша Савић (2024)Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...... rnama 'Konrpareronm Cauka 4.1. Ifospuuncka onpea 3a Oy6uuHcko nyna!be ( JOURNAL OF PETROLEUM TECHNOLOGY/Legends of Artificial Lift-Part 3 URL: https://jpt.spe.org/legends-artificial-lift-part-3-history ) 4.1. Kauajbka KauaJbke cy MeXaHHuKcC HHCTAaJaHjC HOCTAaBJBCHC Ha HIOBDPIHHHMH KOJC IIpH ...
... NAN, URL: https://www.don-nan.com/cast-the-anchor (22.04.2024.) 12. JOURNAL OF PETROLEUM TECHNOLOGY/Legends of Artificial Lift- Part 3, URL: https://jpt.spe.org/legends-artificial-lift-part-3-history (23.04.2024.) 13. SNPC, URL: http:/www.sinopeciI.com/English/Product/0560383238.html (27.04 ...
... 123 Crank offset anole (deorees) 00 Monthiy electric bik' [27] lectr co3t per m*ffuid #%515 Electr cost per m? ol 83987 Tubing And Pump Information Tubing, Pump And Plunger Calculatons Tubinq O.D.(mm): 73025 Upstr rod{i damo. coeMd. 0100 Tubinq stretch (cm) o Tubina | D (memj: 62001 Dnstr rod4i ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
-
Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays
... we checked and analyzed also included a large number of papers published in the Serbian language, and the most important sources of information were numerous papers and studies in which geology, mineralogy and origin of different indus- trial clays were studied [31–40]. Our assessment and analysis ...
... dis- tances for groups 1 and 2 for categories A, B and C1 are very strange, and it is not clear based on which they are defined, and they amount to 50–90–200 and 40–70–150 m, respectively. It would be geologically logical for the corresponding distances to be 100–200–400 and 50–100–200, respectively ...
... formal (legislative in the field of mining, and access to land) and technical/scientific (geological exploration and evaluation of a mineral deposit). The regulatory framework in Serbia is based on the Law on Mining and Geological Exploration from 2015 [1] and environmental law from 2004 [2]. General ...Vladimir Simić, Dragana Životić, Zoran Miladinović. "Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays" in Resources, MDPI AG (2021). https://doi.org/10.3390/resources10060063