Претрага
2247 items
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Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction... was written with support from the Ministry of Education, Science and Techno- logical Development, Serbia: Project “ Assessment of the impact of climate change on water resources Serbia” (No: TR 37005) and Project “Groundwater Potential and Base for its Sustainable Utilization” (No: OI 176022). ...
... included analyses of the hydrochemical characteristics of the water for all three phenomena during, one hydrological year (summer and autumn 2015, winter and spring, 2016, basic physical and chemical characteristics and ionic composition of water), Sustainability 2023, 15, 11146 6of14 as well as ...
... groundwater that is only 7–8 m away from the borehole and has a flow rate of 2–2.5 L/s, while subthermal water drains from borehole B-1 and has a constant discharge rate of 5 L/s. Water temperatures are uniform and increase with depth, so the water temperature at he Krupaja Spring ranges from 10 ...Ljiljana Vasić, Saša Milanović, Tina Dašić. "Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151411146
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Thermal Imaging Assessment of Energy Efficiency
Damnjanović Vesna (2017)Damnjanović Vesna. "Thermal Imaging Assessment of Energy Efficiency" in eNergetics2017, 3rd Virtuel International Conference on Science, Technology and management in Energy 2017, Nis, Srbija:Research and Development Centar “ALFATEC” (2017): 169-172
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CC-PESTO: a novel GIS-based method for assessing the vulnerability of karst groundwater resources to the effects of climate change
The new GIS-based CC-PESTO method is shown to successfully assess and map the vulnerability/resilience of karst aquifers to effects of climate change. Karst aquifers were chosen due to their importance at the global level and widespread utilisation in potable water supply and irrigation, but also because of their hydrogeological complexity. The method was developed to assess the intrinsic vulnerability of aquifers, without considering the direct impact of variable climate factors, but considering the adaptive capacity of aquifers in response ...Zoran Stevanović, Veljko Marinović, Jelena Krstajić. "CC-PESTO: a novel GIS-based method for assessing the vulnerability of karst groundwater resources to the effects of climate change" in Hydrogeology Journal, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s10040-020-02251-6
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Risk management in coal mining
Miljanović Igor, Milutinović Aleksandar, Tokalić Rade. "Risk management in coal mining" in Proceedings, 2nd Virtual International Conference on Science, Technology and Management in Energy, Niš:Research and Development Center “ALFATEC”, Niš, Serbia, and Complex System Research Centre (2016): 89-96
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Conditions for efficiency of open pit medium voltage power transformers
Aleksandrović Snežana (2017)Aleksandrović Snežana. "Conditions for efficiency of open pit medium voltage power transformers" in 3rd Virtual International Conference on Science, Technology and Management in Energy no. 3, Niš, Serbia:Research and Development Center “ALFATEC” (2017): 77-81
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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... the aquatic environment of the Maczki-Bór sand pit due to the fact of planned closure of mining operations (NE part of Upper Silesian Coal Basin - Poland). In: RÜDE R. T., FREUND A. and WOLKERSDORFER, CH. (eds.) Proceedings of the 11th International Mine Water Association Congress: Mine Water - Managing ...
... Education, Science and Technological Development of the Republic of Serbia for funding projects OI176022, TR33039, TR37005 and III43004. REFERENCES BAJIĆ, D. and POLOMČIĆ, D. (2012) A conceptual hydrogeological model for open pit mine „Polje E“ (Kolubara coal basin, Serbia). In: RŮŽIČKA, J. and RŮŽIČKOVÁ ...
... D., BAJIĆ, D. and RISTIĆ-VAKANJAC, V. (2012) Groundwater balance, natural recharge and drainage zones at open pit mine „Polje E“ of Kolubara Coal Basin (Republic of Serbia). In: BAN, M., et al. (eds.) CD Proceedings of the 7th Conference on Sustainable Development of Energy Water and Environmental ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School
Prva škola za obuku polaznika koju je organizovala COST akcija NexusLinguarum održana je od 8. do 12. februara 2021. godine sa ciljem da studenti, istraživači i stručnjaci nauče osnove lingvističke nauke o podacima. Tokom obuke polaznici su se upoznali sa širokim spektrom tema: od semantičkog veba, RDF -a i ontologija, do modeliranja i pretraživanja jezičkih podataka pomoću najsavremenijih ontoloških modela i alata. Škola je održana u okviru serije letnjih škola EUROLAN-a i organizovalo ju je virtuelno (onlajn) nekoliko instituta; ...nauka o lingvističkim podacima, povezani podaci u lingvistici, jezički podaci, EUROLAN, NexusLinguarum, COST akcija, škola za obuku... linguistics and natural language processing (NLP). The goal of this 15th EUROLAN School was to bring together scholars, teachers and students of linguistics, NLP and information technology to discuss the principles and best practices for repre- senting, publishing and linking linguistic data and the issues ...
... on February 8-12, 2021 and was aimed at students, academics, and practition- ers wishing to learn the basics of Linguistic Data Science. During the training school, the participants were introduced to a wide range of topics: from Semantic Web, RDF and on- tologies, to modeling and querying linguis- tic ...
... training school was aimed at promoting and teaching the basics of linguis- tic data science and the related technologies to people from the academia and the industry. It was organized under the umbrella of the EUROLAN series of summer schools, which was established in 1993 and covers topics that are particularly ...Milan Dojchinovski, Julia Bosque Gil, Jorge Gracia, Ranka Stanković. "EUROLAN 2021: Introduction to Linked Data for Linguistics Online Training School" in Infotheca, Faculty of Philology, University of Belgrade (2021). https://doi.org/10.18485/infotheca.2021.21.1.7
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Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization
Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić . "Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization" in Mineral and Thermal Waters of Southeastern Europe, Springer International Publishing (2016). https://doi.org/10.1007/978-3-319-25379-4
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Evaluation And Perspectives Of Underground Coal Mines In Serbia
... "Research on possibility for AT (Advanced Technology) rockbolting application in mines for the purpose of increasing work safety and production efficiency" (TR33025). Development of this project is financed by Ministry of Science and Technological Development, Republic of Serbia. Literature [1] ...
... process’. Management Science 36, 259–268. [6] Akıncı H., Ozalp Y., Turgut B., 2013: Agricultural land use suitability analysis using GIS and AHP technique. Computers and Electronics in Agriculture, pp 71-82 [7] Saaty, T.L., 1980. The Analytic Hierarchy Process: Planning, Priority Setting, Resource ...
... roof and floor conditions, rock pressure and geo-mechanic conditions (criteria C2); • Mining hazards, such as gas, water, dust and potential for gas outbursts and spontaneous combustion (criteria C3); • Potential for mechanization, such as seam inclination, seam thickness, floor and roof ...Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić. "Evaluation And Perspectives Of Underground Coal Mines In Serbia" in 7th Balkan Mining Congress Preceedings - BalkanMine2017, Prijedor, 11-13. oktobar 2017., Banjaluka : University of Banjalika, Faculty of Mining, RS, BiH (2017)
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... are persistent in water environments and they may show potential toxic properties against nontarget organisms, i.e., aquatic organisms Molecules 2023, 28, 655. https:/ /doi.org,/10.3390/ molecules28020655 https:/ /www.mdpi.com/journal/molecules Molecules 2023, 28, 655 2of18 and even human health ...
... present water constituents, and photo-induced reactive species. Appl. Catal. B Environ. 2018, 220, 171–181. [CrossRef] Stankiewicz, A.; Giebuštowicz, J.; Stankiewicz, U.; Wroczytski, P.; Natecz-Jawecki, G. Determination of selected cardiovascular active compounds in environmental aquatic samples-methods ...
... optimiza- tions, frequency, and property calculations, solvent effects (water) were considered in the Poisson-Boltzmann solver framework. Molecular DFT calculations were performed with the Jaguar program [56—59], as implemented in the Schrodingjeer Materials Science Suite 2022-2. TD-DFT analyses ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Improving efficiency of thermal power plants through mine coal quality planning and control
Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja. "Improving efficiency of thermal power plants through mine coal quality planning and control" in Thermal Science, Vinča Institute of Nuclear Sciences (2018). https://doi.org/10.2298/TSCI170605209B
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... Marsigli M. (1997) Composition and ceramic properties of "Tertiary clays from southern Sardinia (Italy). Applied Clay Science, 12, 247–266. 'Vandiver P.B., Soffer O., Klima B. & Svoboda J. (1989) The origins of ceramic technology at Dolni Vestonice, Czechoslovakia. Science, 246, 1002—1008. Vieira ...
... content and slight contamination by clay particles and quartz (Fig. 4). The DTA curves of the investigated samples show a couple of endothermic peaks (Fig. 5). The first significant endothermic peak at between 120% and 220%C is associated with the loss of adsorbed and interlayer water and indicates ...
... in a barrel of water and left to stand in it for the next 24h. As the excess water is drained, the clay body is extracted onto a table, which will allow for its further prepar- ation and for the addition of calcite. The calcite pieces are first hammered to obtain smaller pieces and then ground in ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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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 ...... Health, USA (R01 NSO76517, R01 MH096463 to JC) and National Science Foundation, Division of Chemistry (CHE- 1625735 to JC). The authors would also like to thank Mr. Klaus Weyhing, Department of Pharmaceutical Technology at Uni- versity of Tubingen and dr Vladimir Dobričić, Department of Pharma- ...
... 12-14, Belgrade, Serbia 4 Department of Chemistry and Biochemistry, Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210N. Cramer St., Milwaukee, WI, United States * Laboratory of Crystallography, Faculty of Mining and Geology, University of Belgrade, Đušina 7, Belgrade ...
... cm'! and 986 and 932 cm ! for the first and second sample, respectively, indicates a more closed confor- mation (Fig. 7c). It was demonstrated that the greater affinity for water 10 could reduce the molecular mobility of the vitreous matrix and contribute to the stability during storage. However ...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
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NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands
Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić. "NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands" in Inorganica Chimica Acta, Elsevier BV (2012). https://doi.org/10.1016/j.ica.2012.09.016
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... Petroleum Science and Technology, 24,195-206. 86 BinderBenjamin Julian Tomte (2012) Production Optimization in a Cluster of Gas-Lift Wells, Master of Science in Engineering Cybernetics, Supervisor: Bjarne Anton Foss, Department of Engineering Cybernetics, Norwegian University of Science and Technology ...
... Petroleum Science and Engineering, Volume 6, Issue 3, 201-211. Zhang X., Tian J., Wang L., Zhou Z., 2002.Wettability effect of coatings on drag reduction and paraffin deposition prevention in oil, J. Petrol, Sci. Eng. 36, 87- 95. 97 Zhang Y.C., (2011) Researchon Water Plugging and Sand Control ...
... efficiency production of heavy oil, Chemical Engineering Research and Design, 90 (2), 238-242. Danilovic D., (2011) Development of specific heatingcablesforapplicationin oilwell, Ministry of Science and Technological Development of Serbia, Inovationproject 391-00-00028/2009-02-RFL-IA/05. Danilovic ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... Petroleum Science and Technology, 24,195-206. 86 BinderBenjamin Julian Tomte (2012) Production Optimization in a Cluster of Gas-Lift Wells, Master of Science in Engineering Cybernetics, Supervisor: Bjarne Anton Foss, Department of Engineering Cybernetics, Norwegian University of Science and Technology ...
... Petroleum Science and Engineering, Volume 6, Issue 3, 201-211. Zhang X., Tian J., Wang L., Zhou Z., 2002.Wettability effect of coatings on drag reduction and paraffin deposition prevention in oil, J. Petrol, Sci. Eng. 36, 87- 95. 97 Zhang Y.C., (2011) Researchon Water Plugging and Sand Control ...
... efficiency production of heavy oil, Chemical Engineering Research and Design, 90 (2), 238-242. Danilovic D., (2011) Development of specific heatingcablesforapplicationin oilwell, Ministry of Science and Technological Development of Serbia, Inovationproject 391-00-00028/2009-02-RFL-IA/05. Danilovic ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina
... between C=O and the exchangeable cation, and/or H bonds between C=O and the hydration water bcecause C=O 333 SERBIAN SOCIETY OF SOIL SCIENCE Soils for Future under Global Challenges and C-N in this compound are in a conjugation mode due to the distribution of double bonds and lone electron ...
... SOCIETY OF SOIL SCIENCE Soils for Future under Global Challenges After air drying, montmorillonite was saturated with 1 M NaCI, and lefton a mechanical shaker for 24 h, centrifuged and rinsed with distilled water until the negative reaction on CL. The sample was then alr-dried and named Na-mont ...
... aromatic benzene ring of S-metolachlor and the aromatic benzene ring of the organic complex (nm-n bonds). Also, the formation of a hydrogen bond occurs between the molecules of S-metolachlor and the molecules of water 329 SERBIAN SOCIETY OF SOIL SCIENCE Soils for Future under Global Challenges ...Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević. "FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina" in Book of Proceedings / 3rd International and 15th National Congress Soils for Future Under Global Challenges, 21-24 September 2021 Sokobanja, Serbia , Belgrade : Serbian Society of Soil Science (2021)
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Phase relations and physical indicators of municipal waste from old landfills in Serbia
Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science... particular importance during the planning process of its further processing (for example · combustion, composting), as well as for transport organization and temporary storage. It is defined as soil water content by relation of mass lost and remaining material mass, obtained by drying to a constant ...
... number 36014 funded by the Ministry of Education, Science and Technological Development of Republic of Serbia for the period 2011—2020. REFERENCES 1) De Haan, E.J. (1997): An overview of the mechanical behavior of peats and organic soils and some appropriate construction techniques, Proceedings ...
... G) m where: mx, mya — initial dry mass and mass of drained water Žuo, }a — Initial dry unit weight and dry unit weight in degradation stage no, n — initial porosity and porosity in a certain stage of degradation Wo, W — initial moisture and moisture content in a certain stage of degradation ...Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić. "Phase relations and physical indicators of municipal waste from old landfills in Serbia" in Japanese Geotechnical Society Special Publication, The Japanese Geotechnical Society (2021). https://doi.org/10.3208/jgssp.v09.cpeg016