TY  - JOUR
AU  - Ružić, Jovana
AU  - Stašić, Jelena M.
AU  - Rajković, Višeslava M.
AU  - Raić, Karlo
AU  - Božić, Dušan
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5792
AB  - The Cu-7vol.%ZrB2 alloy examined in this study was consolidated via powder metallurgy (PM) processing by combining mechanical alloying and hot pressing. Powder mixture with composition: 94.78 wt.% copper, 4.1 wt.% zirconium, and 1.12 wt.% boron was used as a starting material. Mechanical alloying of powder mixture was performed at various times: 5, 10, 15, 20, 25, and 30 h. Structural changes that occur in the samples of copper alloy with 7vol.%ZrB2 after milling and during hot pressing process were studied with the use of X-ray diffraction. Scanning electron microscopy (SEM) equipped with an energy dispersive X-ray spectrometry (EDS) was applied to examine the morphological properties and elemental analysis of the hot-pressed samples as a function of milling times. Also, hardness of the Cu-7vol.%ZrB2 alloy was investigated, and the results showed that hardness of the samples increased as the milling time increased. The compressive properties at room temperature are correlated to the corresponding hardness results. Distribution of ZrB2 particles and presence of agglomerates in the Cu matrix directly depend on the milling time and show strong influence on compressive properties and fracture of Cu7vol.%ZrB2 alloy.
PB  - Walter de Gruyter GmbH
T2  - Science and Engineering of Composite Materials
T1  - Microstructural and mechanical properties of Cu-7vol.%ZrB2 alloy produced by powder metallurgy techniques
EP  - 671
IS  - 6
SP  - 665
VL  - 22
DO  - 10.1515/secm-2013-0178
ER  - 

@article{
author = "Ružić, Jovana and Stašić, Jelena M. and Rajković, Višeslava M. and Raić, Karlo and Božić, Dušan",
year = "2015",
abstract = "The Cu-7vol.%ZrB2 alloy examined in this study was consolidated via powder metallurgy (PM) processing by combining mechanical alloying and hot pressing. Powder mixture with composition: 94.78 wt.% copper, 4.1 wt.% zirconium, and 1.12 wt.% boron was used as a starting material. Mechanical alloying of powder mixture was performed at various times: 5, 10, 15, 20, 25, and 30 h. Structural changes that occur in the samples of copper alloy with 7vol.%ZrB2 after milling and during hot pressing process were studied with the use of X-ray diffraction. Scanning electron microscopy (SEM) equipped with an energy dispersive X-ray spectrometry (EDS) was applied to examine the morphological properties and elemental analysis of the hot-pressed samples as a function of milling times. Also, hardness of the Cu-7vol.%ZrB2 alloy was investigated, and the results showed that hardness of the samples increased as the milling time increased. The compressive properties at room temperature are correlated to the corresponding hardness results. Distribution of ZrB2 particles and presence of agglomerates in the Cu matrix directly depend on the milling time and show strong influence on compressive properties and fracture of Cu7vol.%ZrB2 alloy.",
publisher = "Walter de Gruyter GmbH",
journal = "Science and Engineering of Composite Materials",
title = "Microstructural and mechanical properties of Cu-7vol.%ZrB2 alloy produced by powder metallurgy techniques",
pages = "671-665",
number = "6",
volume = "22",
doi = "10.1515/secm-2013-0178"
}

Ružić, J., Stašić, J. M., Rajković, V. M., Raić, K.,& Božić, D.. (2015). Microstructural and mechanical properties of Cu-7vol.%ZrB2 alloy produced by powder metallurgy techniques. in Science and Engineering of Composite Materials
Walter de Gruyter GmbH., 22(6), 665-671.
https://doi.org/10.1515/secm-2013-0178

Ružić J, Stašić JM, Rajković VM, Raić K, Božić D. Microstructural and mechanical properties of Cu-7vol.%ZrB2 alloy produced by powder metallurgy techniques. in Science and Engineering of Composite Materials. 2015;22(6):665-671.
doi:10.1515/secm-2013-0178 .

Ružić, Jovana, Stašić, Jelena M., Rajković, Višeslava M., Raić, Karlo, Božić, Dušan, "Microstructural and mechanical properties of Cu-7vol.%ZrB2 alloy produced by powder metallurgy techniques" in Science and Engineering of Composite Materials, 22, no. 6 (2015):665-671,
https://doi.org/10.1515/secm-2013-0178 . .

TY  - JOUR
AU  - Šiljić, Aleksandra
AU  - Ružić, Jovana
AU  - Knežević, Milena
AU  - Maksimović, Ana
AU  - Pocajt, Viktor
AU  - Ristić, Mirjana
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1376
AB  - Rapid population growth, urbanization and industrial growth have led to severe waste management problems in the cities of developing countries. The improper management of municipal solid waste is a major source of air, land and water pollution, and poses risks to human health and the environment. This article examines the current situation in the management of municipal solid waste in Belgrade, the impact of globalization on the waste generation, discusses lessons learned, and proposes a system for the proper management of municipal solid wastes. Considering the high proportion of organic matter in the waste generated in Belgrade (typically over 45%), composting can be an option to reduce the amount of waste that is land filled, thus extending the lifespan of municipal landfills. Also composting recycles nutrients by returning them back to the soil. Source separation of organic matter at households should be implemented in order to obtain high quality of the resulting compost. .
AB  - Porast broja stanovnika, urbanizacija i industrijalizacija doveli su do intenziviranja problema u oblasti upravljanja komunalnim čvrstim otpadom u zemljama u razvoju. Usled nepravilnog rukovanja otpadom dolazi do emisije zagađujućih materija u vazduh, vodu i zemljište, što za posledicu ima negativan uticaj na zdravlje ljudi i na životnu sredinu. U ovom radu izvršena je analiza trenutne situacije u Beogradu u oblasti upravljanja otpadom. U skladu sa dobijenim podacima i na osnovu ispitivanja sastava otpad preporučena su odgovarajuća savremena rešenja. Zbog visokog udela bio-otpada (više od 45 %), kompostiranje je pogodna metoda kojom bi se obezbedilo smanjenje količine otpada koji se deponuje, čime bi se produžio radni vek deponije. Takođe se kompostiranjem obezbeđuje kruženje materije u prirodi i nutrijenti se vraćaju u zemljište. Odvojeno sakupljanje, na izvoru razdvojenog biootpada, je preduslov za dobijanje kvalitetnog komposta. .
PB  - Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd
T2  - Ecologica
T1  - Natural resources protection by municipal solid waste recycling
T1  - Očuvanje prirodnih resursa reciklažom materijala iz komunalnog otpada
EP  - 172
IS  - 54
SP  - 169
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1376
ER  - 

@article{
author = "Šiljić, Aleksandra and Ružić, Jovana and Knežević, Milena and Maksimović, Ana and Pocajt, Viktor and Ristić, Mirjana",
year = "2009",
abstract = "Rapid population growth, urbanization and industrial growth have led to severe waste management problems in the cities of developing countries. The improper management of municipal solid waste is a major source of air, land and water pollution, and poses risks to human health and the environment. This article examines the current situation in the management of municipal solid waste in Belgrade, the impact of globalization on the waste generation, discusses lessons learned, and proposes a system for the proper management of municipal solid wastes. Considering the high proportion of organic matter in the waste generated in Belgrade (typically over 45%), composting can be an option to reduce the amount of waste that is land filled, thus extending the lifespan of municipal landfills. Also composting recycles nutrients by returning them back to the soil. Source separation of organic matter at households should be implemented in order to obtain high quality of the resulting compost. ., Porast broja stanovnika, urbanizacija i industrijalizacija doveli su do intenziviranja problema u oblasti upravljanja komunalnim čvrstim otpadom u zemljama u razvoju. Usled nepravilnog rukovanja otpadom dolazi do emisije zagađujućih materija u vazduh, vodu i zemljište, što za posledicu ima negativan uticaj na zdravlje ljudi i na životnu sredinu. U ovom radu izvršena je analiza trenutne situacije u Beogradu u oblasti upravljanja otpadom. U skladu sa dobijenim podacima i na osnovu ispitivanja sastava otpad preporučena su odgovarajuća savremena rešenja. Zbog visokog udela bio-otpada (više od 45 %), kompostiranje je pogodna metoda kojom bi se obezbedilo smanjenje količine otpada koji se deponuje, čime bi se produžio radni vek deponije. Takođe se kompostiranjem obezbeđuje kruženje materije u prirodi i nutrijenti se vraćaju u zemljište. Odvojeno sakupljanje, na izvoru razdvojenog biootpada, je preduslov za dobijanje kvalitetnog komposta. .",
publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd",
journal = "Ecologica",
title = "Natural resources protection by municipal solid waste recycling, Očuvanje prirodnih resursa reciklažom materijala iz komunalnog otpada",
pages = "172-169",
number = "54",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1376"
}

Šiljić, A., Ružić, J., Knežević, M., Maksimović, A., Pocajt, V.,& Ristić, M.. (2009). Natural resources protection by municipal solid waste recycling. in Ecologica
Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd., 16(54), 169-172.
https://hdl.handle.net/21.15107/rcub_technorep_1376

Šiljić A, Ružić J, Knežević M, Maksimović A, Pocajt V, Ristić M. Natural resources protection by municipal solid waste recycling. in Ecologica. 2009;16(54):169-172.
https://hdl.handle.net/21.15107/rcub_technorep_1376 .

Šiljić, Aleksandra, Ružić, Jovana, Knežević, Milena, Maksimović, Ana, Pocajt, Viktor, Ristić, Mirjana, "Natural resources protection by municipal solid waste recycling" in Ecologica, 16, no. 54 (2009):169-172,
https://hdl.handle.net/21.15107/rcub_technorep_1376 .