11 articles in this issue
D. .Lj. Jevtic, D. M. Zakic, A. R. Savic
This paper presents the results of authors' laboratory testing of the influence of steel fibers as fiber reinforcement on the change of properties of cement composite mortar and concrete type materials.Mixtures adopted - compositions of mortars had identi... see more
M. Maksimovic, Lj. Vukic, Ð. Vojinovic, J. Mandic
Synthetic sea water has been taken as a referential sample, in which Mg(OH)2 had been sedimented, in order to reduce biological effects and confirm reproducibility of results of the familiar composition sample. The synthetic sea water was prepared accordi... see more
B. Pejovic, V. Micic, M. Perušic, G. Tadic, S. Smiljanic
In this paper, starting from general tangent equation in arbitrary point of specified curve, using principles of differential geometry and given mathematical transformation tangent equation of polytrophic function in p – v diagram was obtained. This form ... see more
M. Jotanovic, G. Tadic
Most commonly, all reforms of curriculum and study programmes in the educational system of Chemical Engineering are based on knowledge integration and developing tools which are designed to help students acquire a global picture of their professional call... see more
M. G. Pavlovic, M. V. Tomic, Lj. Pavlovic, V. Maksimovic, N. D. Nikolic
The effect different deposition regimes (constant and reversing currents), on the powdered copper electrodeposits morphology were investigated. The morphology of electrodeposited copper powder was investigated using a scanning electron microscope (SEM). T... see more
M. Perušic, D. Lazic, Z. Obrenovic, G. Ostojic
Main objective of this paper is feasibility of alumina cement production on the Republic of Srpska resources basis. As is known calcium-alumina cement is type of mineral hydraulic binder. As basic resources of CAC production are used bauxite and calcite. ... see more
Z. R. Petrovic, P. T. Dugic, V. M. Aleksic, Lj. C. Vasiljevic, T. T. Botic
Mineral base oils are extracted from oil fractions of naphta that has boiling point of over 350 °C, and contain different kinds of carbohydrates and hetero-compunds. Removal of unwanted compunds from mineral base oils in domestic rafineries is made by raf... see more
V. Aleksic
Methodological approach of identification and quantification of corrosion damages of the steel tubes which use for casing the well in petroleum industry are presented in the paper. A description and consequence of steel corrosion of casing steel tubes wit... see more
D. D. Stanojevic, M. B. Rajkovic, D. V. Toškovic, M. V. Tomic
Nowadays, due to using many rare metals in the most advanced technologies, the demand for these metals is increasing. Rare metals, however, mostly don’t show the property of creating their own mineral deposits, making their production more complicated. So... see more
M. B. Rajkovic, D. V. Toškovic, D. D. Stanojevic, C. Lacnjevac
Investigations, conducted in this study showed that waste phosphogypsum-dihydrate represents a burden which even must not be kept in deposits because of its large quantity in relation to the main product – phosphoric acid, as well as because of great impa... see more
S. Papuga, P. Petrovic, M. Maksimovic
Today, rotary dryers are often use to dry sawdust prior to their further processing, palletizing and briquetting, into commercially voluble product. This paper present mathematical model for drying process of sawdust particles in a triple pass rotary drye... see more