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Prikaz rezultata 251-257 od 257
Explaining the entropy concept and entropy components
(Serbian Society of Subject Didacticians (SSoSD), 2017)
Total entropy of a thermodynamic system consists of two components: thermal entropy due to energy, and residual entropy due to molecular orientation. In this article, a three-step method for explaining entropy is suggested. ...
Characterization of the sludge generated during the processing of iron ore in Omarska mine
(University of Belgrade, Faculty of Mining and Geology, Center for Environmental Engineering, 2017)
In present paper there were characterized sludge samples generated as an overflow during the processing of iron ore from Omarska mine (Bosnia and Herzegovina). With the aim to improve the utilization of minerals, we are ...
The dispersion-flocculation behaviour of the natural raw clay samples from Omarska mine / Понашање природних узорака глине из рудника Oмарска у процесима дисперзије и флокулације
(Академија наука и умјетности РС, 2019)
In present paper, studied were the dispersion-flocculation behaviour of the primary natural raw „clay samples” from Omarska mine (Republic of Srpska, Bosnia and Herzegovina). Namely, our previous results showed that during ...
Preliminary data on the crystal-chemical characteristics of beryl from Cer Mt. (Serbia)
(Carpathian-Balkan Geological Association, 2010)
A beryl crystal from Cer Mt. (Serbia) studied in this paper was characterized by means of XRPD and wet-chemical analyses. It has following unit cell dimensions: a = 9.2166(8) Å, c = 9.192(1) Å, V = 676.2(1) Å3 and ratio ...
Synthesis of calcium doped phosphate tungsten bronze
(Society of Physical Chemists of Serbia, 2018)
A study is presented of phase transitions of acid CaHPW12O40∙6H2O salt of 12-tungstophosphoric acid and characterized in the temperature range from room temperature to 1093 K. The structure and its phase transformations ...
First occurrence of rodingite in Central Serbia
(Carpathian-Balkan Geological Association, 2010)
During the field geological mapping and accompanied laboratory studies of the samples for the Basic Geological Map in the wider area of the town of Valjevo (Central Serbia) were distinguished serpentinites, gabbros, ...
Macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia)
(John Wiley & Sons, Inc., 2012)
The macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia) was studied with optical microscopy, electron microprobe analysis (EMPA), Fourier transform infra-red (FT–IR), and ...