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Bioethanol production by immobilized Sacharomyces cerevisiae var. ellipsoideus cells
(African Journal of Biotechnology, 2009)
Bioethanol can be produced by fermentation of sugars from various waste agricultural materials. Whichever system for bioethanol production is chosen, the attention must be paid to the overall economics and energy consumption. ...
Properties of Cu-Al2O3 Powder and Compact Composites of Various Starting Particle Size Obtained by High-Energy Milling
(Savez inženjera metalurgije Srbije, 2009)
Copper-based composites were obtained using high energy milling. The inert gas-atomized prealloyed copper powder (average particle size - 30 μm) containing 2 wt.% Al, and the mixture of electrolytic copper powder (average ...
Colloid electrohydrodynamics
(Savez hemijskih inženjera, Beograd, 2009)
This brief extracted review presents the recent development in basic and applied science and engineering of finely dispersed particles and related systems in general, but more profound and in-depth treatise are related to ...
Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima / The shape and size of macromolecules of carboxymethyl starch in diluted solutions
(Association of Chemical Engineers of Serbia, 2009)
Uzorci karboksimetil skroba pripremljeni su reakcijom eterifikacije u heterogenom
medijumu. Tri uzorka su pripremljena iz kukuruznog skroba a tri iz skroba iz krompira. Stepen supstitucije sintetisanih uzoraka je iznosio ...
Indukciona peć bez jezgra: Konstrukcija, radni parametri i primena / Coreless induction furnace: Design, operating parameters and applications
(Beograd : Srpsko livačko društvo- SLD, 2009)
Indukciona peć bez jezgra se često koriste u
oblasti livenja, zbog svojih prednosti, kao što su:
visok proizvodni učinak, dobar stepen
iskorišćenja, kvalitet i čistoća liva, homogenost
sastava i temperature, široka ...
Influence of SA procedure welding parameters on mechanical properties spiral welded steel tubes API X60 / Uticaj parametara EPP postupka zavarivanja na mehaničke osobine spiralno zavarenih cevi od čelika API X60
(DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd, 2009)
The selection of steel, the dimensions and methods of seam welded steel tubes fabrication are closely connected to the function of tube as a whole structure in specific working conditions, for a calculated service life. ...
Application of Complete Gurson Model for prediction of ductile fracture in welded steel joints
(Trans Tech Publications Ltd, Durnten-Zurich, 2009)
Ductile fracture process includes three stages: void nucleation, their growth and coalescence. The voids nucleate due to the fracture or separation of non-metallic inclusions and secondary-phase particles from the material ...
Cast steel-SiC composites as wear resistant materials / Kompoziti čelik-SiC dobijeni livenjem kao materijali otporni na habanje
(University of Belgrade - Faculty of Mechanical Engineering, Belgrade, 2009)
In the present paper the possibilities of making and applying of cast-incarbide composites based on carbon steel and SiC, for the production of wear resistance machine parts such as mill hammers, escavator teets, etc. are ...
Comparative study of cu(2+) adsorption on a zeolite, a clay and a diatomite from Serbia
(Applied Clay Science, 2009)
The adsorption of a zeolite, clay and diatomite from Serbia toward aqueous Cu2+ ions was studied, at different pH. The adsorbents were characterized with respect to phase composition, specific surface area and point of ...
Determination of tension strength in the longitudinal and circumferentional direction in glass-polyester composite pipes / Određivanje zatezne čvrstoće u uzdužnom i obimnom pravcu u staklo-poliester kompozitnim cevima
(Faculty of Technology, Novi Sad, 2009)
Polymer composite pipes with glass fiber reinforcement have today a wide usage in the chemical and process industries. The basic subject of this paper is the determination and distribution of stresses and strains in ...