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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. ...
The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites
(International Institute for the Science of Sintering (IISS), 2009)
Inert gas atomized prealloyed copper powder containing 2 wt.% Al (average particle size approximate to 30 mu m) and a mixture consisting of copper (average particle sizes approximate to 15 mu m and 30 mu m) and 4 wt.% of ...
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 ...
Micromechanical estimates of the critical values of j-integral for the steel of steam pipelines
(Springer, New York, 2009)
We analyze the level of damage to 14MoV63 steel for steam pipelines under the conditions of crack-growth initiation according to the mechanism of ductile fracture. The state of the material after service for about 100,000 ...
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 ...
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 ...
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. ...
The interlaminar strength of the glass fiber polyester composite
(Association of the Chemical Engineers of Serbia, 2009)
The paper outlines the method and the results of the experimental investigation of interlaminar strength of glass fibre reinforced polyester composites, with the aim of determining the influence that the structure, a ...
Ultraviolet Protection Factor of Gray-state Plain Cotton Knitted Fabrics
(Sage Publications Ltd, London, 2009)
The protection provided by clothing against ultraviolet (UV) radiation has been the subject of considerable recent research. However, a lack of investigations concerned with the influence of yarn properties on UV protection ...