Претрага
642 items
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The State and Perspective of Belgrade District Heating System Development
Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić (2019)District heating (DH) system in Belgrade provides energy for heating of more than 21 million m2 in households (app. 50% of all households), public, commercial and industry sectors. Public Utility Company “Beogradske elektrane” is responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy of the PUC - the introduction of ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić . "The State and Perspective of Belgrade District Heating System Development" in 5th International Conference on Smart Energy Systems, Copenhagen : Aalborg Universitet (2019)
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Predlog metodologije za merenje performansi procesa
Kukrika Milan, Dimitrijević Bojan (2012)Kukrika Milan, Dimitrijević Bojan. "Predlog metodologije za merenje performansi procesa" in Zbornik radova 10. Međunarodna naučna konferencija o površinskoj eksploataciji Opencast Mining Conference - ОMC 2012 no. X, Zlatibor, Srbija:Jugoslovenski Komitet za površinsku eksploataciju Saveza inženjera rudarstva i geologije Srbije (2012): 167-175
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Karakteristike merenja protoka mase materijala na transportnim trakama
Aleksandrović Snežana, Grozdanović Ines, Jeftenić Ilija. "Karakteristike merenja protoka mase materijala na transportnim trakama" in Tehnika - časopis Saveza inženjera i tehničara Srbije LXXIII no. 5, Beograd, Serbia:Savez inženjera i tehničara Srbije, Beograd (2018): 645-649. https://doi.org/10.5937/tehnika1805645A
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Otrovni gasovi koji nastaju pri miniranju, metode merenja, određivanje sigurnosnih rastojanja
Kričak Lazar, Negovanović Milanka, Cvjetić Aleksandar, Janković Ivan, Zeković Dario. "Otrovni gasovi koji nastaju pri miniranju, metode merenja, određivanje sigurnosnih rastojanja" in Zbornik radova VIII Međunarodne Konferencije Nemetali 2009, :Jugoslovenski Komitet za površinsku eksploataciju (2009): 114-125
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On the high temperature behaviour of monoclinic trinepheline
Vulić Predrag, Kahlenberg Volker (2012)Vulić Predrag, Kahlenberg Volker. "On the high temperature behaviour of monoclinic trinepheline" in Neues Jahrbuch fur Mineralogie - Abhandlungen 189 no. 2, Stuttgart:Schweizerbart (2012): 197-206. https://doi.org/10.1127/0077-7757/2012/0219
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BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... values at room temperature for the sintered samples are listed in Table 2. Microstructure (grain size) and phase composition, as well as their interplay guuide the magnetization process and influence magnetic properties in general [69]. With an increase in sintering temperature up to 1300 "C, different ...
... n enhancement can be explained by the most significant grain size incre- ment as the sintering, temperature increased, Figure 4 and Table 2. The change in mass magnetization value in the temperature range from 20 ?C to 600 "C under the magnetic field of 50 kA/m for the sintered samples is presented ...
... maintained 104 mbar pressure. CTI Cryogenics refrigerating system model 22 mounted on the cold head was applied to a lower temperature to 150 K. Lakeshore 340 temperature controller with hater attached at the cold head was used to gradual heating; rate of 2.5 K/min up to 400 K. Ferroelectric ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051
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Probability density function estimation of a temperature field obtained by pulsed radiometric defectoscopy
Tomić Ljubiša, Kovačević Aleksandar, Damnjanović Vesna, Ocmokrović Predrag. "Probability density function estimation of a temperature field obtained by pulsed radiometric defectoscopy" in Measurement 46, Amsterdam, Netherlands:ELSEIVER VB (2013): 2263-2268
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Temperature Contrast Enhancment Techniques in Pulse Video Termography Applications
Tomić Ljubiša, Elazar Jovan, Damnjanović Vesna, Milanović Bojan, Kovačević Aleksandar. "Temperature Contrast Enhancment Techniques in Pulse Video Termography Applications" in Proceedings of 5th International Scientific conference on Defensive Technologies OTEH, Belgrade, Serbia:Militaru Technical Institute (2012): 427-431
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Analiza uticaja početne temperature test uzorka pri primeni impulsne termografije
Tomić Ljubiša, Damnjanović Vesna, Mišković Katarina, Bondžulić Boban, Knežević Dragan, Kovačević Aleksandar (2018)Tomić Ljubiša, Damnjanović Vesna, Mišković Katarina, Bondžulić Boban, Knežević Dragan, Kovačević Aleksandar. "Analiza uticaja početne temperature test uzorka pri primeni impulsne termografije" in Zbornik radova ETRAN 2018 no. MO, Beograd, Srbija:Društvo za Etran, Akademska misao Beograd (2018): 314-317
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Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis.
Antić Milorad, Kounov Alexandre, Trivić Branislav. "Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis." in Thermo2014 – 14th International conference on Thermochronology, Chamonix, France, 8-12 September 2014 no. S4-12, Chamonix, France:Thermo2014 – 14th International conference on Thermochronology (2014): 46-47. https://doi.org/10.13140/2.1.1220.4800
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Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis
Antić Milorad, Kounov Alexandre, Trivić Branislav. "Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis" in Proceedings of the XX CBGA Congress, Tirana, Albania, 23 – 29 September 2014 Jan-15, Tirana, Albania:Buletini i Shkencave Gjeojoglike (2014): 135-135
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The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology
Stojadinović Uroš, Matenco Liviu, Andriessen Paul , Toljić Marinko, Foeken Jurgen. "The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology" in Global and Planetary Change 1 no. 103, Amsterdam:Elsevier (2013): 19-38
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The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology
Stojadinović Uroš, Matenco Liviu, Andriessen Paul., Toljić Marinko, Foeken Jurgen. "The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology" in Global and Planetary Change no. 103, Amsterdam:Elsevier (2013): 19-38. https://doi.org/10.1016/j.gloplacha.2012.08.00
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Geofizičko reflektivno sondiranje kao test integriteta betonskog šipa
Jovo Jakišić (2024)Temelj predstavlja izuzetno bitan element svakog građevinskog objekta. Zbog toga je neophodno poštovati odgovarajuće standarde, u projektovanju i izvođenju temeljne konstrukcije.Šipovi predstavljaju jedan od načina dubokog fundiranja tj. temeljenja. Za svaki izvedeni šip pojedinačno neophodno je izvesti kontrolu kvaliteta. Postoji više postupaka kojima je mogućeizvršiti kontrolu kvaliteta, a jedan od njih je test integriteta šipa malom silom, koji je prikazan u ovom radu.Ovaj postupak se izvodi seizmometrijskom metodom, postupkom refleksije, koji je definisan međunarodnim standardom ASTM D5882.Podaci koji su prikazani ...... vrhu šipa. Istovremeno, tokom inicijacije, vibracija na površini šipa i merenje podataka se uzorkuje brzinom od 50000 uzoraka u sekundi (fU = 50 KHz). Instrument čuva signal sa akcelerometra tokom čitavog procesa merenja. Na osnovu oblika ovog signala moguće je Šipovi se mogu testirati nakon ...
... zahteve ASTM D5882 standarda, a prikazan je na slici 8. Slika 8. Pile Echo Tester Merenja su izvođena na svakom šipu koji je predviđen za ispitivanje geofizičkim reflektivnim sondiranje. Prilikom merenja korišćeni su sledeći parametri: • Konvergencija prilikom sumiranja pojedinačnih signala ...
... D-5882 STANDARDA Test integriteta šipa mlaom silom pokriva proceduru kojom se određuje integritet individualnih, vertikalnih ili nagnutih šipova, merenjem i analiziranjem brzine (obavezno) i odgovorom sile (opciono) šipa, indukovanim udarcem (ručnim čekićem ili slično) upravno na glavu šipa. Ovaj ...Jovo Jakišić. Geofizičko reflektivno sondiranje kao test integriteta betonskog šipa, 2024
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Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova
Zoran M. Štirbanović (2015-07-01)Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina... (Glavobolja, Ne) i (Temperatura, Visoka) onda (Grip, Da) ako (Glavobolja, Da) i (Temperatura, Visoka) onda (Grip, Da) ako (Temperatura, Veoma visoka) onda (Grip, Da) ako (Temperatura, Normalna) onda (Grip, Ne) ako (Glavobolja, Da) i (Temperatura, Visoka) onda (Grip, Ne) ako (Temperatura, Veoma visoka) ...
... Da) i (Temperatura, Visoka) onda (Grip, Da) ako (Bol u mišićima, Ne) i (Temperatura, Visoka) onda (Grip, Da) ako (Temperatura, Veoma visoka) onda (Grip, Da) ako (Temperatura, Normalna) onda (Grip, Ne) ako (Bol u mišićima, Ne) i (Temperatura, Visoka) onda (Grip, Ne) ako (Temperatura, Veoma visoka) ...
... zavisnost atributa. Na primer, u tabeli 1 atribut Temperatura određuje jedinstveno samo neke vrednosti atributa Grip. Tako (Temperatura, Veoma visoka) podrazumeva (Grip, Da), slično (Temperatura, Normalna) podrazumeva (Grip, Ne) ali (Temperatura, Visoka) ne podrazumeva uvek (Grip, Da). Prema tome ...Zoran M. Štirbanović. "Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-07-01)
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Pyrolysis of oil shale and bituminous marlstone kerogens in an open system - influence of temperature on the yield and composition of liquid pyrolysates
Gajica Gordana, Stojanović Ksenija, Jovančićević Branimir, Šajnović Aleksandra, Kostić Aleksandar (2013)Gajica Gordana, Stojanović Ksenija, Jovančićević Branimir, Šajnović Aleksandra, Kostić Aleksandar. "Pyrolysis of oil shale and bituminous marlstone kerogens in an open system - influence of temperature on the yield and composition of liquid pyrolysates" in The Fifteenth Annual Conference YUCOMAT 2013, Herceg Novi, Montenegro, September 2-6, 2013. Book of Abstracts, Herceg Novi, Montenegro:Publisher: Materials Research Society of Serbia (http://www.mrs-serbia.org.rs) (2013): 90-90
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Characterization of the Early Byzantine Pottery from Caričin Grad (South Serbia) in Terms of Composition and Firing Temperature
Damjanović Ljiljana, Bikić Vesna, Šarić Kristina, Erić Suzana, Holclajtner-Antunović Ivanka. "Characterization of the Early Byzantine Pottery from Caričin Grad (South Serbia) in Terms of Composition and Firing Temperature" in Journal of Archaeological Science no. 46, Amsterdam:Elsevier (2014): 156-172. https://doi.org/10.1016/j.jas.2014.02.031.
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Measurement of crack displacement on residential structure due to blast-induced vibrations and daily changes of temperature and relative humidity
Negovanović Milanka, Kričak Lazar, Janković Ivan, Zeković Dario, Ignjatović Snežana. "Measurement of crack displacement on residential structure due to blast-induced vibrations and daily changes of temperature and relative humidity" in Technics Technologies Education Management / TTEM 7 no. 1, Sarajevo,BIH:DRUNPP, Sarajevo (2012): 411-417
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Analysis of crack displacements on residential structure induced by blasting and earthquake vibrations and daily changes of temperature and relative humidity.
Kričak Lazar, Negovanović Milanka, Janković Ivan, Zeković Dario, Mitrović S.. "Analysis of crack displacements on residential structure induced by blasting and earthquake vibrations and daily changes of temperature and relative humidity." in Proceedings of International Conference on Damage Mechanics-ICDM, Beograd, Srbija:Serbian Chamber of Engineers, Faculty of Civil Engineering (2012): 181-184
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Structural, Morphological and Electrical Properties of Multi-Doped Calcium Phosphate Materials as Solid Electrolytes for Intermediate Temperature Solid Oxide Fuel Cells
Mirković M. Miljana, Došen, M. Anja, Erić P. Suzana, Stojmenović D. Marija, Matović Z. Branko, Rosić A. Aleksandra (2018)Mirković M. Miljana, Došen, M. Anja, Erić P. Suzana, Stojmenović D. Marija, Matović Z. Branko, Rosić A. Aleksandra. "Structural, Morphological and Electrical Properties of Multi-Doped Calcium Phosphate Materials as Solid Electrolytes for Intermediate Temperature Solid Oxide Fuel Cells" in Science of Sintering 50 no. 1, Beograd:International Institute for the Science of Sintering, Belgrade, Serbia (IISS) (2018): 95-109. https://doi.org/10.2298/SOS1801095M