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Alkali-lead deposits of lead refinery 'Trepča' and their influence on Ibar's waters / Alkalno-olovne deponije rafinerije olova 'Trepča' i njihov uticaj na vode Ibra
(Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd, 2009)
Besides lead as basic metal, flotation lead concentrates contain several accompanied metals, such as: copper, zinc, iron, antimony, silver, gold, bismuth and arsenic. Raw lead and slag are obtained by agglomeration roasting ...
Ethylene oxide removal by sorption on aluminium oxide / Uklanjanje etilen oksida sorpcijom na aluminijum oksidu
(Association of Chemical Engineers of Serbia, 2009)
The dynamics of ethylene oxide sorption and desorption on Al2O3 sorbent were investigated. The investigations of ethylene oxide sorption on Al2O3 show that significant sorption appeared above 125°C. The removal of sorbed ...
Linear Free Energy Relationships of the C-13 NMR chemical shifts in 5-(3-and 4-substituted arylazo)-4,6-dimethyl-3-cyano-2-pyridones
(Arkat Usa Inc, Gainesville, 2009)
The C-13 NMR chemical shifts of the C2 carbon atom in the heteroaromatic nuclei of seventeen 5-(3- and 4-substituted arylazo)-4,6-dimethyl-3-cyano-2-pyridones were determined in deuterated DMSO solution. For quantitative ...
Failure analysis of rotary screw pump / Analiza havarije rotacione vijčane pumpe
(Society for Structural Integrity and Life, Institute for Material Testing, 2009)
A case study of damage of a rotary high-pressure three screw oil hydraulic pump for regulator oil in hydroelectric power plant is presented. Results of chemical composition analysis, mechanical properties, impact energy ...
Methanolysis of sunflower oil using alumina/silica supported potassium oxide (K2O) as a heterogeneous catalyst / Metanoliza suncokretovog ulja katalizovana kalijum oksidom (K2O) na alumosilikatnom nosaču
(Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2009)
Biodiesel, the most promising alternative to diesel fuel, is renewable, biodegradable, environmentally friendly and can be used in existing engines. Certain disadvantages of conventional processes of biodiesel, i.e. fatty ...
Smart hydrogels based on itaconic acid for biomedical application / Inteligentni hidrogelovi na bazi itakonske kiseline za biomedicinsku primenu
(Association of Chemical Engineers of Serbia, 2009)
pH and temperature sensitive hydrogels, based on 2-hydroxyethyl methacrylate (HEMA) and itaconic acid (IA) copolymers, were prepared by gamma irradiation and characterized in order to examine their potential use in biomedical ...
Design and optimization of purification procedure for biodiesel washing
(Association of the Chemical Engineers of Serbia, 2009)
Almost complete methanolysis of triglycerides is usually not enough to fulfil the strict standards of biodiesel quality. A key step in this process is neutralization of alkali (catalyst) followed by the washing procedure ...
The nucleation behavior of k2o center dot tio2 center dot 3geo(2) undercooled melt
(University of Chemistry and Technology, Prague, 2009)
The nucleation of K2TiGe3O9 crystals in an undercooled melt of stoichiometric composition was studied. Volume nucleation with spherical morphology of the growing crystals was determined. The nucleation range is in the ...
The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes
(Association of the Chemical Engineers of Serbia, 2009)
The present study was aimed to investigate and compare the efficiency of different methods for the isolation extract from a plant material. Extracts from dried leaves of Aloe vera (A. barbadensis Mill.) and Sweet Bay (Laurus ...
The ultrasonic and image analysis method for non-destructive quantification of the thermal shock damage in refractory specimens
(Elsevier Sci Ltd, Oxford, 2009)
In the present work, Mg-exchanged zeolit and silicon carbide were used as starting materials for obtaining cordierite/SiC composite ceramics with weight ratio 50:50. Samples were exposed to the water quench test from 950 ...