Претрага
2939 items
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Academician Vladimir Laskarev (1868-1954) and Paratethys
Irina Malakhova, Alexey Tesakov, Sergey Popov, Ljupko Rundic. "Academician Vladimir Laskarev (1868-1954) and Paratethys" in Geoloski anali Balkanskoga poluostrva, National Library of Serbia (2024). https://doi.org/10.2298/GABP240310005M
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Развој модела употребног квалитета помоћне механизације на површинским коповима лигнита
Драгица Јагодић Крунић (2021)Тренутно стање помоћне механизације на површинским коповима лигнита је незадовољавајуће узроковано пре свега старошћу и неблаговременом заменом машима услед чега је расположивост недовољна а трошкови експлоатације и одржавања високи. Тренутно стање и захтеви који се постављају пред ове машине указују на неопходност оптимизације процеса управљања помоћном механизацијом. Одређивање оптималног времена замене и преосталих могућности је најодговорнији управљачки задатак који треба да буде заснован на свеобухватном сагледавању економских, техничких и других узрочно последичних веза. Са економског аспекта гледано треба одржавати ...помоћна механизација, употребни квалитет, ефективност, расположивост, сигурност функционисања, ризик, трошкови животног циклуса, фази логика, Монте Карло методаДрагица Јагодић Крунић. Развој модела употребног квалитета помоћне механизације на површинским коповима лигнита, Београд : [Д. Јагодић Крунић], 2021
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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, СрбијаMarija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
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State and perspective of individual household heating in Serbia: A survey-based study
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 ...... hensive evaluation of scenarios and pathways of the energy transi- tion by using energy modeling methods. Declaration of Competing Interest The authors declare that they have no known competing finan- cial interests or personal relationships that could have appeared to influence the work reported in ...
... a survey method to achieve a comprehensive understanding of occupants’ heating-related behaviors and their demand for heating. Surveys have proven to be a useful method for collecting detailed data on residential heating systems - fuel type, heating system age, dwell- ing size, the number of household ...
... potential subsidizing of the cost of new heating systems. This survey presents a valid starting point for defining instruments aimed to improve energy efficiency in the household sector, diminish its influence on climate change, and secure energy transition towards sustain- able heating systems. The obtained ...Boban Pavlović, Dejan Ivezić, Marija Živković. "State and perspective of individual household heating in Serbia: A survey-based study" in Energy and Buildings, Elsevier BV (2021). https://doi.org/10.1016/j.enbuild.2021.111128
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Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays
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
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A survey of greenhouse gases production in central European lignites
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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Comparative analysis of karst water quality parameters of the Banja spring near Valjevo (Republic of Serbia)
Jovana Lončar, Jovana Mladenović, Vesna Ristić Vakanjac, Veljko Marinović, Branislav Petrović, Petar Vojnović, Radisav Golubović (2024)The monitoring of karst spring release regimes is becoming more and more relevant due to the fact that karst waters are of exceptional quality and most often it is only necessary to chlorinate these waters in order to use them for water supply. In addition to monitoring the discharge regime, it is certainly necessary to establish monitoring of quality parameters that are generally observed sporadically (seasonally or monthly). An example of a well-designed monitoring of quantitative and qualitative parameters ...Jovana Lončar, Jovana Mladenović, Vesna Ristić Vakanjac, Veljko Marinović, Branislav Petrović, Petar Vojnović, Radisav Golubović. "Comparative analysis of karst water quality parameters of the Banja spring near Valjevo (Republic of Serbia)" in Review of the Bulgarian Geological Society, Bulgarian Geological Society (2024). https://doi.org/10.52215/rev.bgs.2024.85.3.214
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Clayed wastewater treatment
Анионски (A120), нејонски (N100), катјонски (C460; C581) флокуланти и коагулант Al₂(SO₄)₃ коришћени су за пречишћавање отпадних вода са садржајем глине. pH дисперзије је износио 7,8, са концентрацијом чврстих материја од 25,93 kg/m³ (глина и кварц). 54% чврстих честица имало је пречник мањи од 10 μm. Брзина таложења без примене флокуланата износила је 0,4 m/h. Ефикасност коришћених флокуланата је следећа: A120 >> N100 >> C460. У присуству A120 (100 g/t) брзина таложења достигла је око 25 m/h, а добијен ...Dušica Vučinić, Đurica Nikšić, Predrag Lazić. "Clayed wastewater treatment" in Mining and environmental protection, Vrdnik, 25 - 28. September 2019, University of Belgrade, Faculty of Mining and geology (2019)
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A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)
A sufficiently long time-series of daily discharges is needed to assess the discharge dynamics and calculate the water balance equation parameters of a spring (river source). The paper assumes that a catchment is gauged if a time-series of observations of at least 30 years is available, which is a rare case in Serbia. One-year monitoring is often set up to verify the reserves of a water source or spring intended for capture. Monitoring ceases after the final report is ...Aleksandar Tanasković, Vesna Ristić Vakanjac, Dušan Polomčić, Jelena Močević. "A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)" in Review of the Bulgarian Geological Society, Bulgarian Geological Society (2023). https://doi.org/10.52215/rev.bgs.2023.84.3.315
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The influence of Al3+ ion on porcine pepsin activity in vitro
Vesna M. Pavelkić, Kristina R. Gopčević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ ion on porcine pepsin activity in vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095
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Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik
Tunel „Debelo brdo“ nazvan je po najizraženijem relјefnom obliku na ovoj drugoj deonici autoputa E-80 Niš – Pločnik. Osnovnu geološku građu na lokaciji tunela čini Mio-Plioceni kompleks heterogenog litološkog sastava. Izgradnja tunela je predviđena delom u otvorenom iskopu dužine 240 m, a delom sa podzemnim iskopom dužine 190 m. U zoni tunela, padina je okarakterisana kao uslovno stabilna, pa bi neadekvatna zasecanja mogla da izazovu klizanja terena. Iz tih razloga, u okviru rada posebno su prikazani geotehnički uslovi izgradnje ...... CONSTRUCTION OF ON THE HIGHWAY E- - 1, 2 Ikodinovi 3, 4 1 University of Belgrade Faculty of Mining and Geology, Djusin 7, Belgrade, dragoslav.rakic@rgf.bg.ac.rs 2 University of Belgrade Faculty of Mining and Geology, Djusin 7, Belgrade, radojica.lapcevic@rgf.bg.ac.rs 3 University of Belgrade ...
... ; ; Merdare, Zbornik radova - CD (Book of papers - Srpski kongres o putevima, Beograd, str. 12-23. [6] ; ; J (2019). Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia Proceedings of the XVII European Conference of Soil Mechanics and Geotechnical Engineering ...
... Faculty of Mining and Geology, Djusin 7, Belgrade, irena.basaric@rgf.bg.ac.rs 4 University of Novi Sad Faculty of Civil Engineering Subotica, Kozaracka 2a, drlukic.lukic@gmail.com Abstract: The "Debelo brdo" tunnel is named after the most pronounced relief form on this second section of the E-80 ...Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić. "Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik" in Četvrti Srpski kongres o putevima, 2-3. jun 2022., Beograd : Srpsko društvo za puteve Via Vita (2022)
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INVENTS: A Hybrid Mine Ventilation Planning and Design System
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...Lilić Nikola, Stanković Ranka, Obradović Ivan. "INVENTS: A Hybrid Mine Ventilation Planning and Design System" in Proceedings of International Scientific Conference of FME Session 4: Automation Control and Applied Informatics , Hong Kong : iConcept Press (2013)
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INVENTS: a hybrid system for subsurface ventilation analysis
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "INVENTS: a hybrid system for subsurface ventilation analysis" in Proc. of International Scientific Conference of FME, September 2000, Ostrava, FME (2000)
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Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia
The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...... area is 15m. The geographical position of both case studies is presented on Fig 1. Fig. 1 Position of case studies on the map of Serbia RAMMS (Rapid Mass Movemnet Software) RAMMS DBF software is FVM (Finite Volume Method) software for modelling of debris flows, based on well used rheological ...
... https://doi.org/10.1038/NGEO1040 Krušić J., Abolmasov B., Samardžić Petrović M (2019) Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study, Proceedings of the 4th Regional Symposium on in the Adriatic - Balkan Region 23-25 October 2019, Sarajevo ...
... parameters were used 0,11 for µ and 500 ms -2 for ξ for Selanac and 0,35 for µ and 1000 ms-2 for ξ for Leva reka. Results of analysis and modelling without entrainment influence are presented in (Krušic et al. 2019). For the second case study, some preliminary results were published in Krušic et al ...Jelka Krušić , Biljana Abolmasov, Miloš Marjanović. "Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60706-7_25
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Why classical sequence stratigraphy doesn't work in Pannonian basin?
Dejan Radivojević (2018)Dejan Radivojević. "Why classical sequence stratigraphy doesn't work in Pannonian basin?" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Multiphase evolution of fluids in the Rudnik hydrothermal-skarn deposit (Serbia): new constraints from study of quartz-hosted fluid inclusions
This study presents and discusses first detailed petrographic, microthermometric and Raman spectroscopic data from quartzhosted fluid inclusions at Rudnik Zn-Pb-Cu-Ag skarn deposit (Serbia) and combines them with the information on skarnand ore paragenesis. Three periods in the metamorphic-hydrothermal history of the deposit are recognized: 1) the pre-ore prograde skarn period when garnet-clinopyroxene skarns formed, 2) the syn-ore period that encompasses a retrograde stage marked by epidote and zoisite and a quartz-sulfide stage characterized by quartz, pyrrhotite, sphalerite, galena and ...skarnovska ležišta, rudnik, fludine inkluzije, srpska kenozojska magmatska provincija, Zapadno Tetisjki metalogenetski pojas... epidote, coisite, and actinolite form, under the influence of fluids characterized by lower temperatures (<400 "C) and lower salinity of < 25 wt% NAaCI:; this is accompanied by the activation of fluids of similar properties and the precipita- tion of sphalerite, galena, and chalcopyrite (the main ...
... analyses comprise a total population of 241 fluid inclusions: 81 from PR, 68 from A1, 48 from A2 and 44 from sample AZ. The method is used to determine the homogenization temperature (7}), dissolution tempera- ture of ice (7,)), the temperature of the first appearance of liquid (7,) and nucleation ...
... bination of stable isotope and fluid inclusion analyses. Geochim Cosmochim Acta 70(4):0965–982 Seghedi I, Downes H, Szak4cs A, Mason PR, Thirlwall MF, Rosu E, Pćcskay Z, Marton E, Panaiotu C (2004) Neogene-Quaternary magmatism and geodynamics in the Carpathian-Pannonian region: a synthesis. Lithos ...Stefan Petrović, Ronald J. Bakker, Vladica Cvetković, Rade Jelenković. "Multiphase evolution of fluids in the Rudnik hydrothermal-skarn deposit (Serbia): new constraints from study of quartz-hosted fluid inclusions" in Mineralogy and Petrology, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s00710-024-00860-7
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Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)... Vargas, 2001) is a semi- quantitative method that allows subjective as well as objective factors to be considered in the decision-making process. The implementation of the AHP methodology in the assess- ment of landslide susceptibility firstly requires finding of interdependencies between the most important ...
... calculated by overlapping all three exposure maps (Fig. 31-6). The values are averaged (the sum of all three hazard exposure values was divided by 3) per each road link segment to cancel the influence of different data distributions for different hazards. The final road link hazard exposure is visualized ...
... Folkeson, L. (2014). A method for mapping flood hazard along roads. Journal of Environmental Management, 133, 69�77. Available from https://doi.org/ 10.1016/j.jenvman.2013.11.032. Krušić, J., Marjanović, M., Samardžić-Petrović, M., Abolmasov, B., & Andrejev, K. (2017). Comparison of expert, deterministic ...Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...... about the influence of toxic metal ions on the activity of extra- cellular enzymes is scant and controversial. Variability of data results from the chemical properties of the element and the formation of various chemical species, depending on the pH, ionic strength, presence of competing elements ...
... B •. The influence of A' ion on porcine pepsin activity 2? TfO VESNA M. PAVELKIC!, KRISTINA R. GOPCEVIC?, DANIJELA Z. KRSTIC?, & MARIJA A. ILIC? lDepartmem of Physical Chemistry, Vinca-pInstitute of Nuclear Science, POB 522, 11001 Belgrade, Serbia, ŽSchool of Medicine, University of Belgrade, ...
... organism, can affect activity of gastrointestinal enzymes and influence digestion and utilization of nutrients. Aluminium affects the activity of a-chymotrypsin, in the presence of its specific bovine pancreatic trypsin inhibitor; at the pH 6.5 in the presence of aluminium, the enzyme activity ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095