Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Nikolić Jelena D."'
Autor:
Matijašević Srđan D., Topalović Vladimir S., Savić Veljko V., Labus Nebojša J., Nikolić Jelena D., Zildžović Snežana N., Grujić Snežana R.
Publikováno v:
Science of Sintering, Vol 55, Iss 4, Pp 539-547 (2023)
The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from t
Externí odkaz:
https://doaj.org/article/455d4d8b0a0a4acab7816f16bfbc4201
Autor:
Matijašević Srđan D., Grujić Snežana R., Nikolić Jelena D., Topalović Vladimir S., Savić Veljko V., Zildžović Snežana N., Labus Nebojša J.
Publikováno v:
Science of Sintering, Vol 54, Iss 3, Pp 321-334 (2022)
The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope
Externí odkaz:
https://doaj.org/article/e5bff087ad544431afbc45c14cd05fec
Autor:
Matijašević Srđan D., Topalović Vladimir S., Grujić Snežana R., Savić Veljko V., Nikolić Jelena D., Labus Nebojša J., Zildžović Snežana N.
Publikováno v:
Science of Sintering, Vol 53, Iss 3, Pp 301-310 (2021)
The selected lithium germanium-phosphate glass was prepared by a conventional melt-quenching technique. The XRD method was employed to confirm the glass was obtained and to reveal crystalline phases during heat treatment. The dilatometry (DIL), di
Externí odkaz:
https://doaj.org/article/75a02a5f93a14388ab3802975a12c647
Autor:
Stojanović Jovica N., Smiljanić Sonja V., Grujić Snežana R., Vulić Predrag J., Matijašević Srđan D., Nikolić Jelena D., Savić Veljko
Publikováno v:
Science of Sintering, Vol 51, Iss 4, Pp 389-399 (2019)
The crystal structure of new lanthanum strontium borate glass-ceramics was refined by the Rietveld method. The results showed that La2SrB10O19 has the monoclinic crystal structure, space group C2 (No. 5) with a = 11.1170(6), b = 6.5667(3), c = 9.2
Externí odkaz:
https://doaj.org/article/7350c0c1e88445caad2ddc938cc359b5
Autor:
Matijašević Srđan D., Grujić Snežana R., Topalović Vladimir S., Nikolić Jelena D., Smiljanić Sonja V., Labus Nebojša J., Savić Veljko V.
Publikováno v:
Science of Sintering, Vol 50, Iss 2, Pp 193-203 (2018)
Crystallization kinetics of 22.5Li2O•10Al2O3•30GeO2•37.5P2O5 (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature (
Externí odkaz:
https://doaj.org/article/635189d0a4d140ab9ae7f061ec689490
Autor:
Nikolić Jelena D., Tošić Mihajlo B., Grujić Snežana R., Živanović Vladimir D., Đošić Marija S., Matijašević Srđan D., Smiljanić Sonja V.
Publikováno v:
Journal of the Serbian Chemical Society, Vol 82, Iss 3, Pp 329-342 (2017)
In this work, the dissolution behavior of a polyphosphate glass, with the composition 45P2O5·3SiO2·25K2O·15CaO·10MgO·ZnO·MnO (mol %), in simulated body fluid (SBF) at a temperature of 37 °C for different times was studied. Two powder sizes of
Externí odkaz:
https://doaj.org/article/c3c3476be1264a23aaa718dac1867198
Autor:
Smiljanić Sonja V., Grujić Snežana R., Tošić Mihajlo B., Živanović Vladimir D., Matijašević Srđan D., Nikolić Jelena D., Topalović Vladimir S.
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 22, Iss 1, Pp 111-115 (2016)
The selected lanthanum-strontium-borate glasses were prepared by a conventional melt-quenching technique. The compositions of the investigated glasses were chosen to be: 5.7, 9.5, 14.3, 19.1 mol % for La2O3, 22.9, 19.1, 14.3, 9.5 for mol % SrO and
Externí odkaz:
https://doaj.org/article/241425b479f646bb9e59110ce6a74975
Autor:
Janković Marija M., Todorović Dragana J., Nikolić Jelena D., Rajačić Milica M., Pantelić Gordana K., Sarap Nataša B.
Publikováno v:
Hemijska Industrija, Vol 68, Iss 1, Pp 83-88 (2014)
7Be, 210Pb and 137Cs activity concentrations in ground level air at five monitoring stations (MS Vinča, Zeleno Brdo, Zaječar, Vranje and Zlatibor) in Serbia were determined during the period from May 2011. to September 2012., as part of the proj
Externí odkaz:
https://doaj.org/article/280c50f6736c4924a475c3fa1e2387c5
Publikováno v:
Nuclear Technology and Radiation Protection, Vol 28, Iss 4, Pp 381-388 (2013)
Activities of 7Be and 210Pb were monitored in surface air in Belgrade, Serbia, from 2004 to 2012. The measurements were taken from two locations, in an open field of a city suburb and in the central city area. The activities were determined on HPG
Externí odkaz:
https://doaj.org/article/cd8c4c177bf24def8be54e1edac55ccc
Publikováno v:
Nuclear Technology and Radiation Protection, Vol 27, Iss 4, Pp 380-387 (2012)
A considerable number of primordial radioisotopes are present in almost all the samples extracted from the Earth’s crust, such as oil, rock, soil or other materials. Their concentrations are often determined by gamma spectrometry. Although the rela
Externí odkaz:
https://doaj.org/article/75c45ca8fe4c4a0388de55f8edbd8f45