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Упит dcterms_subject_txt:solid mineral raw materials

705 items

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... gligoricorgf.bg.ac.rs, jelena.majstorovicorgf.bg.ac.rs, luka.crnogoracrgf.bg.ac.rs Abstract: In mining, explosives are primarily used to obtain mineral raw material from hard rocks. Explosive charges with hundreds of kilograms per a drillhol and blasting with dozens and even hundreds of tonnes of an ...

  • 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)

  • Acoustic - optic approach for the examination of materials condition in objects of cultural heritage

    Kričak Lazar, Barr M. Amy, Srećković Milesa, Dragović Magdalena, Čučaković Aleksandar, Ostojić Stanko, Kovačević Aleksandar, Borna Nada (2016)

  • 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)

  • 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)

  • Compaction of Municipal Solid Waste

    Jovana Janković Pantic, Dragoslav Rakić, Tina Đurić, Irena Basarić Ikodinović, Snežana Bogdanović (2022)
    Regardless of the numerous activities undertaken to reduce municipal solid waste, its annual volumes continue to grow. In Serbia, the most common and the only one form of waste disposal is at municipal landfills with daily compaction and soil covering. Municipal waste compacting is one of the basic components of the disposal process. Well compacted waste takes up less volume and allows much safer storage. In order to better predict the behavior of municipal waste at landfills, it is ...
    compaction, hammer with spikes, landfill, municipal solid waste, proctor compaction test

  • Microscopical characterization of carbon materials derived from coal and petroleum and their interaction phenomena on making steel electrodes, anodes and cathodes blocks

    Predeanu G., Panaitescu C., Balanescu M., Bieg G., Gómez Borrego A., Diez M.A., Kwiecińska B., Marques M., Mastalerz M., Misz-Kennan M., Pusz S., Suárez Ruiz I., Rodriguez S., Singh A.K., Varma A., Zdravkov A., Životić Dragana (2013)

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... technologies and methods. The initial OER materials in BAEKTEL are published by universities and enterprises of the Western Balkans (WB), mostly in WB languages, which belong to "small" but closely related languages. However, educational materials in "big" languages such as English and Russian ...
    ... audience of potential learners, educational materials need to be of high quality and readily available. In this context, training by qualified OER trainers for both academic institution and enterprise staff involved in production of OER materials will be provided. The third objective of ...
    ... of the project is to produce course materials in several different languages, in various forms such as videos, audio streams and written material. In order to facilitate the use of these materials in a multilingual environment, a language support system is integrated into the BMP, consisting mainly ...

  • Filter rules for soil and geosynthetics

    Dragoslav Rakic, Irena Basaric Ikodinovic, Milenko Ljubojev (2021)
    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 ...
    filter, baza, granulometrijski sastav, vodopropustljivosti, stabilnosti, začepljenje, izdržljivost

  • Petrološke karakteristike dunavskog šljunka (Beograd – Zemun)

    Miloš Mihajlović (2024)
    Dunavski šljunak u okolini Zemuna karakterističan je za obalne rečne naslage formirane dugotrajnim procesima erozije i transporta materijala koje reka Dunav nosi sa različitih područja uzvodno. Ispitivanja šljunka sa lokacije „Gemax” su pokazala je šljunak uglavnom zaobljen, najčešće u rasponu od nekoliko milimetara do nekoliko centimetara u prečniku. Kako Dunav nosi materijal sa velikog sliva, ovaj šljunak sadrži raznovrsne sastojke sa dominacijom kvarca i odlomaka stena visokosilicijskog sastava. Mineraloško-petrografska ispitivanja pokazala su prisustvo klasta različitog sastava, čime je potvrđena ...
    Dunav, šljunak, mineraloško-petrografska ispitivanja, građevinarstvo
    ... valutice MGM 1/2. Mikroskopski opis Osnovni mineralni sastav ispitivanog preparata podrazumeva kvarc, feldspate ı tamne minerale (biotita, amfibola i piroksen). Ovi minerali su raspoređeni u trakama zbog — svetlije trake su bogate feldspatom i kvarcom, dok tamnije sadrže biotit, hlorit, amfibol ...
    ... Danube gravel in the vicinity of Zemun is characteristic of coastal river deposits formed by long-term processes of erosion and transportation of materials carried by the Danube River from various upstream areas. Investigations ofthe gravel at the "Gemax" site have shown that the gravel is mostly ...
    ... pesak sa značajim udelom krečnjačkog i dolomitskog šljunka. Analize pokazuju da su ovi sedimenti bogati silicijum-dioksidom (SiO>) sa primesama minerala kao što su feldspati, gline i oksidi gvožđa koji ovim sedimentima daju specifične boje i fizičko- hemijske karakteristike. 2.4. Metode ispitivanja ...

  • Генеза хидротермалног Cu-Au система Чукару Пеки (Источна Србија)

    Милош Велојић (2021)
    Главни циљ испитивања хидротермалног система Чукару Пеки је разумевање процеса који су довели до његовог настанка, а посебно еволуције рудоносних флуида из којих је настала рудна минерализација. Утврђено је да је овај систем настао у периоду пре 86,78 - 85,19 Ma из магматског интрузива који је био богат водом и имао висок оксидативни потенцијал. Током хлађења, из овог магматског интрузива су издвојени веома врели флуиди, који су имали температуре изнад 600°С и висок салинитет. У ...
    Борска металогенетска зона, Тимочки магматски комплекс, порфирска лежишта, високосулфидациона лежишта, флуидне инклузије, рудне парагенезе, геохронологија, хидротермалне алтерације, LA-ICP-MS
    ... сулфидним минералима. Слика 32: Просечне концентрације никла (ppm) у различитим сулфидним минералима. Слика 33: Просечне концентрације злата (ppm) у различитим сулфидним минералима. Слика 34: Просечне концентрације сребра (ppm) у различитим сулфидним минералима. 64,95 ...
    ... Сиви минерал (рутил?) Нерудни минерали: Кварц је доминантан нерудни минерал у овој жици. Такође се може видети мала количина млађег анхидрита у пукотинама у кварцу. Пирит: Велика зрна неправилног облика у пукотинама у кварцу. Често садржи мала зрна ковелина и сивог минерала (рутила ...
    ... су примећени у свим минералима (до 0,4%).  Присуство волфрама је уочено у свим рудним минералима (углавном у садржајима између 0,2 и 0,6%). ГЕНЕЗА ХИДРОТЕРМАЛНОГ Cu-Au СИСТЕМА ЧУКАРУ ПЕКИ (ИСТОЧНА СРБИЈА) 6  Концентрације злата у појединим рудним минералима (углавном халкопириту ...

  • Phase relations and physical indicators of municipal waste from old landfills in Serbia

    Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić (2021)
    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
    ... 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 their temporal variability. A different proposition of four-phase municipal waste system consists of: inert — solid (s), organic ...
    ... The three-phase system for municipal waste does not take into account a fact 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 ...
    ... 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 of municipal waste phase composition ...

  • A Mathematical Learning Environment Based on Serbian Language Resources

    Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan (2018)
    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 ...
    mathematical content, text processing, mathematical formulae
    ... 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 this in mind, d ...
    ... considerably, as mathematical materials in Serbian are available in different formats, alphabets and dialects. Besides coping with different ways of writing mathematical formulae, one of the main challenges in obtaining a searchable format of these materials is the conversion of source files ...
    ... 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 ...

  • Novel cerium and praseodymium doped phosphate tungsten bronzes: Synthesis, characterization, the behavior in the Briggs-Rauscher reaction and photoluminescence properties

    Tijana Maksimović, Pavle Tančić, Jelena Maksimović, Dimitrije Mara, Marija Ilić, Rik Van Deun, Ljubinka Joksović, Maja Pagnacco (2023)
    Due to the interesting and potentially useful properties, phosphate tungsten bronzes are constantly being studied and attract a lot of attention. In the present work, two different metallic elements, belonging to the group of rare-earth metals, cerium and praseodymium, were used as a dopants for phosphate tungsten bronzes. Novel cerium and praseodymium doped phosphate tungsten bronzes were successfully synthesized and further characterized by thermal analyses, Fourier-transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer and ...
    Electrical and Electronic Engineering, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Spectroscopy

  • Potencijalnost tercijarnih magmatskih kompleksa Vardarske zone Srbije sa aspekta arhitektonskog građevinskog kamena

    Lidija M. Kurešević (2014-01-22)
    U sastavu Vardarske zone, jedne od tektonski najsloženijih oblasti Balkanskogpoluostrva, u čijem domenu se odvijalo otvaranje i zatvaranje okeanskih prostora isubdukcija koja je dovela do intenzivne magmatske aktivnosti pretežno tokom tercijara,danas se nalazi veći broj magmatskih kompleksa.U ovoj disertaciji su obrađene geološke karakteristike trinaest izabranih magmatskihkompleksa Vardarske zone tercijarne starosti, i laboratorijski određena mineraloškopetrografskasvojstva stena u njihovom sastavu i fizičko-mehanička svojstva kamenaznačajna za utvrđivanje mogućnosti njihove primene za dobijanje blokovaarhitektonskog građevinskog kamena iz kojih se dobijaju ploče za oblaganjegrađevinskih ...
    Arhitektonski građevinski kamen, magmatske stene, Vardarska zona, Srbija
    ... str., Beograd. Commission of the European communities, 2008: Communication from the Commission to the European parliament and the Council; The raw materials initiative — meeting our critical needs for growth and jobs in Europe {sec(2008) 2741}, com(2008) 699, 13 p., Brussels. Crnković B. i Bilbija ...
    ... sporednih minerala prisutni su alanit, apatit, sfen, metalični mineral (sl. 4.5-9,10, uz levu ivicu), retko cirkon. Apatit je često idiomorfan, u vidu sitnih kristala do (0,08x0,13) mm. Sekundarni minerali su malo zastupljeni (do 2% stene). Javljaju se hlorit, praškasti epidot i metalični mineral kao ...
    ... i biotita, retko amfibola. Kao akcesorni minerali prisutni su metalični minerali, apatit, sfen, cirkon i ortit. Sekundarni minerali su hlorit, najčešće razvijen po biotitu i amfibolu, kalcit koji uglavnom ispunjava tanke prsline u steni, retki minerali glina i sericit kao produkti 120 alteracija ...

  • Potencijalnost tercijarnih magmatskih kompleksa Vardarske zone Srbije sa aspekta arhitektonskog građevinskog kamena

    Lidija M. Kurešević (2014-01-22)
    U sastavu Vardarske zone, jedne od tektonski najsloženijih oblasti Balkanskogpoluostrva, u čijem domenu se odvijalo otvaranje i zatvaranje okeanskih prostora isubdukcija koja je dovela do intenzivne magmatske aktivnosti pretežno tokom tercijara,danas se nalazi veći broj magmatskih kompleksa.U ovoj disertaciji su obrađene geološke karakteristike trinaest izabranih magmatskihkompleksa Vardarske zone tercijarne starosti, i laboratorijski određena mineraloškopetrografskasvojstva stena u njihovom sastavu i fizičko-mehanička svojstva kamenaznačajna za utvrđivanje mogućnosti njihove primene za dobijanje blokovaarhitektonskog građevinskog kamena iz kojih se dobijaju ploče za oblaganjegrađevinskih ...
    Arhitektonski građevinski kamen, magmatske stene, Vardarska zona, Srbija
    ... str., Beograd. Commission of the European communities, 2008: Communication from the Commission to the European parliament and the Council; The raw materials initiative — meeting our critical needs for growth and jobs in Europe {sec(2008) 2741}, com(2008) 699, 13 p., Brussels. Crnković B. i Bilbija ...
    ... sporednih minerala prisutni su alanit, apatit, sfen, metalični mineral (sl. 4.5-9,10, uz levu ivicu), retko cirkon. Apatit je često idiomorfan, u vidu sitnih kristala do (0,08x0,13) mm. Sekundarni minerali su malo zastupljeni (do 2% stene). Javljaju se hlorit, praškasti epidot i metalični mineral kao ...
    ... i biotita, retko amfibola. Kao akcesorni minerali prisutni su metalični minerali, apatit, sfen, cirkon i ortit. Sekundarni minerali su hlorit, najčešće razvijen po biotitu i amfibolu, kalcit koji uglavnom ispunjava tanke prsline u steni, retki minerali glina i sericit kao produkti 120 alteracija ...

  • 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 ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... 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, etc. In the initial phase of portal development ...
    ... 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 ...
    ... development the basic data for all courses were imported from the accreditation materials prepared for the accreditation process FMG underwent shortly before that. An example of these basic data is given in Figure 1 which depicts a portal page with basic information for the course Informatics ...

  • Flotability of chalcopyrite from the Rudnik deposit

    Đurica Nikšić, Predrag Lazić, Milena Kostović (2021)
    Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...
    Директно селективно флотирање, халкопирит, KAX, NaCN

  • Održiva eksploatacija izvorišta mineralnih voda na primeru Vrnjačke banje

    Vladimir Živanović, Veselin Dragišić, Sava Magazinović, Jakov Andrijašević, Nebojša Atanacković (2022)
    Jedna od najznačajnijih i najposećenijih banja u Srbiji je Vrnjačka Banja koja je poznata po bogatstvu i dugoj istoriji korišćenja mineralnih voda. Obimna hidrogeološka istraživanja izvedena proteklih nekoliko decenija ukazala su na ograničenost rezervi mineralnih voda u uslovima dosta složene hidrogeološke građe područja pojavljivanja. Poslednjih godina eksploatacija ovog dragocenog resursa zadobija novu dimenziju, naročito nakon privatizacije pojedinih hotelskih kompleksa kada se povećavaju potrebe za mineralnim vodama i od kada počinje izrada novih vodozahvata što dovodi u pitanje održivu eksploataciju ...
    mineralne vode, izvorišta mineralnih voda, održivo korišćenje mineralnih voda, monitoring mineralnih voda, Vrnjačka Banja