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2165 items
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Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae
Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović. "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry, Elsevier BV (2019). https://doi.org/10.1016/j.orggeochem.2019.01.001
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Building learning capacity by blending different sources of knowledge
... described and tagged in a standard way, and in machine readable form. This makes resources more easily located by search engines, and results returned by are more relevant. Both educators and learners can find and compare described and tagged learning materials more efficiently, and select the ...
... a part of the even wider open educational resources (OER) initiative, offering educational materials openly and freely to educators, students, and self-learners to use and reuse for teaching, learning, and research, under an open source license (Bissell, 2009). The worldwide OER community established ...
... further advances in the sharing of educational ideas, materials, and knowledge. Social networking, blogs, wikis, cognitive tutors, virtual learning communities, and especially web- based learning management systems (LMS) are being more and more used in TEL (Rhoads, Berdan & Toven‐Lindsey, 2013) ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić. "Building learning capacity by blending different sources of knowledge" in International Journal of Learning and Intellectual Capital (2016). https://doi.org/10.1504/IJLIC.2016.075698
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Filter rules for soil and geosynthetics
Štetni efekti izazvani strujanjem vode kroz različite građevine (brane, nasipi i sl.) uspešno se rešavaju ugradnjom različitih filterskih slojeva. Osnovne funkcije filterskih slojeva su brza evakuacija vode uz sprečavanje unutrašnje erozije i iznošenje sitnih čestica tla. Ovi filterski slojevi najčešće se grade od krupnozrnih materijala (pesak, šljunak, kameni agregati), ali se pored prirodnih materijala sve više koriste i veštački geosintetički materijali. U radu su prikazana osnovna filtarska pravila koja treba ispoštovati da bi se izvelo uspešno projektovanje različitih filtracionih ...Dragoslav Rakic, Irena Basaric Ikodinovic, Milenko Ljubojev. "Filter rules for soil and geosynthetics" in Mining and Metallurgy Engineering Bor, Mining and Metallurgy Institute Bor (2021). https://doi.org/10.5937/mmeb2101001R
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Examination of the possibilities of the application of waste materials (gypsum, fly ash and bottom ash) in construction
Trifunović Prvoslav, Marinković Slobodanka, Kostić-Pulek Aleksandra, Tokalić Rade, Popov Svetlana (2014)Trifunović Prvoslav, Marinković Slobodanka, Kostić-Pulek Aleksandra, Tokalić Rade, Popov Svetlana. "Examination of the possibilities of the application of waste materials (gypsum, fly ash and bottom ash) in construction" in Podzemni radovi no. 24, Beograd:Rudarsko-geološki fakultet (2014): 49-60
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Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling
Ćosović Vladan, Pavlović Mila, Ćosović Aleksandar, Vulić Predrag, Premović Milena, Živković Dragana, Talijan Nadežda (2013)Ćosović Vladan, Pavlović Mila, Ćosović Aleksandar, Vulić Predrag, Premović Milena, Živković Dragana, Talijan Nadežda. "Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling" in Science of Sintering 45, Belgrade:Yugoslav Committee for ETAN (2013): 173-180. https://doi.org/10.2298/SOS1302173C
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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... gaseous, liquid, fibrous and sticky material phase similar to paste (Machado et al., 2008). Within the fibrous phase, authors have included plastic materials, textile and other similar materials. Thus defined four-phase system divides solid materials by type and shape but does not take into account ...
... consists of: inert — solid (s), organic (o), liquid (v) and gaseous (a) phase (Figure 3). Inert phase consists of non-degradable materials such as plastic, metal, rock pieces, ceramics, glass and similar materials. All other materials would be in organic phase. This four-phase representation ...
... that the composition and thus the volume of organic materials, i.c. part of a solid phase, 106 changes over time. Therefore, it should be noted that there is a different representation of municipal waste phase composition, where the four-phase system is proposed and it consists of: gaseous ...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
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A Mathematical Learning Environment Based on Serbian Language Resources
In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...... resulting in a growing number and availability of learning materials, had a strong impact on changes in learning environments. New learning environments are needed, requiring appropriate technology to facilitate access to and management of learning materials in specific domains. Bearing ...
... practice. The process is based on clustering, categorizing and defining mathematical concepts from the base of relevant engineering problems. Figure 3. MLES application 3. GOALS AND CHALLENGES Searching and processing mathematical materials is a complex problem. Standard text processors cannot ...
... well as offering support in understanding and solving some real life problems based on mathematical concepts. Source data for MLES corpus can vary considerably, as mathematical materials in Serbian are available in different formats, alphabets and dialects. Besides coping with different ways ...Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan. "A Mathematical Learning Environment Based on Serbian Language Resources" in Proceedings of the 7th International Scientific Conference Technics and Informatics in Education, Faculty of Technical Sciences, Čačak (2018)
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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
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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 Miljana M., Došen Anja M., Erić Suzana P., Stojmenović, Marija D., Matović Branko Z., Rosić Aleksandra A. (2018)Mirković Miljana M., Došen Anja M., Erić Suzana P., Stojmenović, Marija D., Matović Branko Z., Rosić Aleksandra A.. "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 1 no. 50, Beograd:Međunarodni Institut za nauku o sinterovanju (2018): 95-109. https://doi.org/https://doi.org/10.2298/SOS180
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Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders
Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović (2022)Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have been intensively studied for several decades because of excellent resorptive and osteoconductive properties that can satisfy the requirements needed for various medical applications, such as bone cements, coatings of metallic implants and bone grafts ...Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović. "Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders " in Second International Conference on Electron Microscopy of Nanostructures ELMINA 2022, August 22nd–26th, 2022, Belgrade, Serbia, Serbian Academy of Sciences and Arts Knez Mihailova 35, 11000 Belgrade, Serbia (2022)
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Испитивање магнетске сусцептибилности прашине антропогеног порекла
... An assessment of global and regional emissions of trace metals to the atmosphere from anthropogenic sources worldwide. Environmental Reviews, 9, 269-298. [2] Márton, E., Lesić, V., et al. (2012). First magnetic measurements on PM10 filters from two stations in Serbia and comparison of the results ...
... (2005). Health risks of NO2, SPM and SO2 in Delhi (India). Atmospheric Environment, 39, 6868-6874. [7] Liu, Q., Roberts, A.P. et al. (2012). Environmental magnetism: Principles and applications, Rev. Geophys., 50. [8] Dearing, J. (1999). Environmental magnetic susceptibility, Using the Bartington ...
... ta u Beogradu, 63, 1-30. [4] Petrovský E., Kapička A., et al. (2000). Low-field magnetic susceptibility: a proxy method of estimating increased pollution of different environmental systems. Environ. Geol., 39, 312-318. [5] Vallero D. A. (2008). Fundamentals of air pollution. London: Elsevier ...Дубравка Новичић, Весна Цветков, Весна Дамњановић. "Испитивање магнетске сусцептибилности прашине антропогеног порекла" in VII Меморијални научни скуп из заштите животне средине доцент др Милена Далмација Нови Сад, 01-02. април 2019, Природно-математички факултет, Департман за хемију, биохемију и заштиту животне средине (2019)
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Obtaining of Ceramic Materials by the Method of the Thermal Transformation of Cation Exchanged Zeolites
Radosavljević Mihajlović Ana, Stojanović Jovica, Došen Anja, Vulić Predrag. "Obtaining of Ceramic Materials by the Method of the Thermal Transformation of Cation Exchanged Zeolites" in Advanced Ceramics and Application : program and the book of abstracts / [1st] Serbian Ceramic Society Conference, May 10-11th, 2012, Belgrade, Serbia, Beograd, Srbija:Srpsko keramičko društvo (2012): 25-25
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An aproach to Implementation of blended learning in a university setting
... for course enrolment, and the goal and outcome of the course. There is also a course content outline given by a description of theoretical and practical instruction, a list of course materials, the number of course hours for theoretical and practical instruction, and the method of instruction ...
... each pre-exam and exam activity, information on course content, goals, outcome, as well as the basic course materials, and dynamic data – information on all important events during the course: results of test and activities, various announcements, additional course materials added by teachers ...
... for a forthcoming instruction class, download course materials or get informed about their test and exam results, date and time of forthcoming tests and exams, etc., without being physically present in the FMG building. Course materials available on the portal to date cover approximately ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović . "An aproach to Implementation of blended learning in a university setting" in Proceedings of the Second International Conference on e-Learning, eLearning 2011, September 2011, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2011)
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Investigation of nanostructured Ca0.9Er0.1MnO3 obtained by sucrose nitrate procedure
Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)... Technical Sciences of SASA Institute for Testing of Materials Institute of Chemistry Technology and Metallurgy Institute for Technology of Nuclear and Other Raw Mineral Materials PROGRAM AND THE BOOK OF ABSTRACTS Serbian Academy of Sciences and Arts, Knez Mihailova 35 Serbia, Belgrade, 18-–20 ...
... CERAMICS AND APPLICATION XI New Frontiers in Multifunctional Material Science and Processing Serbian Ceramic Society Institute of Technical Sciences of SASA Institute for Testing of Materials Institute of Chemistry Technology and Metallurgy Institute for Technology of Nuclear and Other Raw ...
... Raw Mineral Materials PROGRAM AND THE BOOK OF ABSTRACTS Serbian Academy of Sciences and Arts, Knez Mihailova 35 Serbia, Belgrade, 18-20% September 2023. Book title: Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION XI Program and the Book of Abstracts Publisher: Serbian ...Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić. "Investigation of nanostructured Ca0.9Er0.1MnO3 obtained by sucrose nitrate procedure" in Program ; and the Book of abstracts The Eleventh Serbian Ceramic Society Conference »Advanced Ceramics and Application« September 18-20, 2023 Serbian Academy of Sciences and Arts, Belgrade, Serbia , Belgrade : Serbian Academy of Sciences and Art Serbia (2023)
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... organic materials and decomposition of carbonates (Milheiro et al., 2005; Baccour et al., 2008; Abdelmalek et al., 2017). The chemical composition of the CC temper indicates that the raw material has high CaO and SiO, contents (28.8 and 27.5 wt.%, respectively) and low Al,Os, Fe)»Os and Na»O contents ...
... calcite and hematite. The clay body sample is a mixture of raw clay and crushed calcite in a ~50:50 ratio, which was confirmed using various techniques. We ave also considered and investigated the technological potential of the sampled materials, taking into consideration their actual and potential ...
... Milošević!* (%, Mihovil Logar! and Biljana Djordjević? 1University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia and ŽNational Museum in Belgrade, Belgrade, Serbia Abstract 'The production of pottery in the traditional manner using local raw materials can provide insights into the ...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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Development and Validation of Universal 3D Blast Fragmentation Model
Fluid Flow and Transfer Processes, Computer Science Applications,Process Chemistry and Technology, General Engineering, Instrumentation, General Materials ScienceVeljko Lapčević, Slavko Torbica, Miloš Stojanović, Ivica Vojinović. "Development and Validation of Universal 3D Blast Fragmentation Model" in Applied Sciences, MDPI AG (2023). https://doi.org/10.3390/app13148316
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Prezentacija projekta "Zaštita ležišta mineralnih sirovina kao osnova sigurnog snabdevanja mineralnim sirovinama u Evropi (safemin4europe)
Vladimir Simić, Rade Jelenković, Dragana Životić, Zoran Miladinović, Stefan Petrović, Marija Petrović (2022)Harmonični ekonomski razvoj svake zemlje u velikoj meri zavisi od dostupnosti sirovina, naročito mineralnih sirovina. Obezbeđivanje njihove dovoljne količine na tržištu (ponude) je od vitalnog značaja za funkcionisanje različitih industrijskih grana koje proizvode različitu robu i opremu neophodnu za ispunjavanje životnih potreba stanovništva kao i za efikasnu poljoprivredu. Mineralne sirovine su neophodne za podršku ekonomskim aktivnostima na lokalnom, regionalnom, nacionalnom i međunarodnom nivou. Ovo su, istorijski, prve sirovine koje su počele da se koriste iz domaćih izvora, i u ...Vladimir Simić, Rade Jelenković, Dragana Životić, Zoran Miladinović, Stefan Petrović, Marija Petrović. "Prezentacija projekta "Zaštita ležišta mineralnih sirovina kao osnova sigurnog snabdevanja mineralnim sirovinama u Evropi (safemin4europe)" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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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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Monoclinic structure and nonstoichiometry of ‘KAlSiO4-O1’
Kremenović Aleksandar, Lazić Biljana, Krüger Hannes, Tribus Martina, Vulić Predrag. "Monoclinic structure and nonstoichiometry of ‘KAlSiO4-O1’" in Acta Crystallographica Section C 69 no. 4, Copenhagen:International Union of Crystallography by Munksgaard (2013): 334-336. https://doi.org/10.1107/S0108270113006069
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A Tel Platform Blending Academic And Entrepreneurial Knowledge
... networking, blogs, wikis, cognitive tutors, virtual learning communities, and learning management systems (LMS) — have enabled further advances in the sharing of educational ideas, materials, and knowledge" [2]. The idea and practice of offering free educational resources in the form of courses ...
... developed and implemented within the open courseware (OCW) movement. The OCW can be perceived as part of the broader open educational resources (OER) initiative, which defines open educational resources as “digitised materials offered openly and freely to educators, students, and self-learners ...
... knowledge from the two sources, academic and entrepreneurial, within BAEKTEL, a platform founded on OER principles. Namely, BAEKTEL enables higher education institutions to publish various academic learning resources (video lectures, course planning materials and evaluation tools as well as thematic ...Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović. "A Tel Platform Blending Academic And Entrepreneurial Knowledge" in Proceedings of the The Fourth International Conference on e-Learning (eLearning-2013), September 2013, Belgrade, Serbia, Belgrade, Serbia : Belgrade Metropolitan University (2013)