Zobrazeno 1 - 10
of 947
pro vyhledávání: '"Živković D"'
Publikováno v:
Praxis Medica, Vol 44, Iss 4, Pp 17-20 (2015)
Introduction: Non-carious tooth substances loss pose a major health problem of a modern man. The literature often collectively describes all non-carious lesions and is therefore difficult to compare results obtained by different authors. Chemical fac
Externí odkaz:
https://doaj.org/article/6a8e520aff434a87a4716e932311df92
Autor:
Matvijenko Vladimir, Živković M., Videnović G., Kostić-Šubarić Lj., Živković D., Perić D., Jovanović R.
Publikováno v:
Praxis Medica, Vol 44, Iss 4, Pp 25-28 (2015)
The most tooth whitening is a procedure that removes stains and various discolorations of tooth surface. Discoloration of teeth may be endogenous and exogenous nature. The aim of this study was to investigate the impact of bleaching combined with dai
Externí odkaz:
https://doaj.org/article/2e752736f6c64a32b6b0ff523c83321b
Publikováno v:
Science of Sintering, Vol 45, Iss 2, Pp 173-180 (2013)
High energy ball milling was used in order to improve dispersion of metal oxide in Ag-SnO2 electrical contact materials. The processed Ag-SnO2 (92:8) and Ag-SnO2In2O3 (87.8:9.30:2.9) powder mixtures were subsequently consolidated to bulk solid pieces
Externí odkaz:
https://doaj.org/article/866cec8b0c8d4276b93a0db4bf80d67b
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 48, Iss 3, Pp 331-337 (2012)
In order to measure the very low oxygen potential by use of stabilized zirconia solid electrolyte emf method, a new cell construction was devised. The idea was based on Janke but a zirconia rod was used instead of the zirconia crucible which contacts
Externí odkaz:
https://doaj.org/article/25f50fec3ecb42a7830409581fdbceee
Publikováno v:
Science of Sintering, Vol 44, Iss 1, Pp 103-112 (2012)
Magnetic NiFe2O4 structure formation was studied through structural, compositional and magnetic characterization of obtained reaction products of a simple, high yielding and low-cost solid-state reaction. Initial annealing of the starting oxides mixt
Externí odkaz:
https://doaj.org/article/08baf11536134ce3a2aad47bc51f3438
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 48, Iss 3, Pp 375-381 (2012)
The results of phase relations investigation in bismuth-rich part of ternary Bi-Ga-Ni system are presented in this paper. Two sections with constant bismuth content equal to 80 and 90 at% were investigated experimentally using DSC and SEM-EDS methods
Externí odkaz:
https://doaj.org/article/ab77a840c762479085457dd38ea687b7
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 48, Iss 1, Pp 131-141 (2012)
Changes in physical properties such as density, porosity, hardness and electrical conductivity of the Ag-SnO2 and Ag-SnO2In2O3 electrical contact materials induced by introduction of metal oxide nanoparticles were investigated. Properties of the obta
Externí odkaz:
https://doaj.org/article/06861e8c86b1437d85f3f0323842ff67
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 48, Iss 2, Pp 185-195 (2012)
Interest for application of hydrometallurgical processes in a processing of complex sulphide ores and concentrates has increased in recent years. Their application provides better metal recoveries and reduced emission of gaseous and toxic ageneses in
Externí odkaz:
https://doaj.org/article/1623670e31b447488ba1e8ddc0a70f16
Publikováno v:
Science of Sintering, Vol 44, Iss 2, Pp 245-253 (2012)
The article surveys current state of the art and challenges in the development of the electrical contact materials in the light of the EU Directive on Restriction of Hazardous Substances (RoHS). The focus was placed on widely used silver-cadmium allo
Externí odkaz:
https://doaj.org/article/1b3897332dff4464a68583191d08c95c
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 47, Iss 1, Pp 23-30 (2011)
Ternary Pb-Zn-Ag system is typical for some physicochemical processes going on in refining phase in the extractive metallurgy of lead. Therefore, investigation of mentioned system is important from both theoretical and practical research of the pheno
Externí odkaz:
https://doaj.org/article/606bd2dac3c54474a2767777e80ef3a7