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Приказ резултата 11-20 од 161
Deformation behaviour of two continuously cooled vanadium microalloyed steels at liquid nitrogen temperature / Deformaciono ponašanje dva kontinuirano hlađena vanadijum mikrolegirana čelika na temperaturi tečnog azota
(Association of Chemical Engineers of Serbia, 2013)
The aim of this work was to establish the deformation behavior of two vanadium microalloyed medium carbon steels with different contents of carbon and titanium by tensile testing at 77 K. Samples were reheated at 1250°C ...
Development directions of packaging made from polymer materials / Pravci razvoja ambalaže od polimernih materijala
(Association of Chemical Engineers of Serbia, 2011)
World packaging market achieves turnover of about $620 billion per year with one third of this amount being associated with packaging made from polymer materials. It is expected that this kind of packaging consumption will ...
Effect of tungsten carbide in carbon Pt catalyst support on electrochemical oxygen reduction in acid solution / Uticaj prisustva volfram-karbida u ugljeničnom nosaču Pt nanočestica na elektrohemijsku redukciju kiseonika u kiselom rastvoru
(Association of Chemical Engineers of Serbia, 2013)
Tungsten carbide was synthesized by calcination of carbon cryogel with embedded tungsten in a form of metatungstate. This material was used as a support for Pt nanoparticles. XRD pattern of W-C support indicated the presence ...
Optimization of esterification activity of lipase from Candida rugosa immobilized using microwave irradiation / Optimizacija esterifikacione aktivnosti lipaze iz Candida rugosa imobilisane mikrotalasnim zračenjem
(Association of Chemical Engineers of Serbia, 2012)
Lipases are very efficient biocatalysts with wide application in synthesis of important ingredients of food, cosmetics and pharmaceutical products, due to their capacity to catalyze both, ester synthesis and ester hydrolysis. ...
Rhamnolipid and lipase production by Pseudomonas aeruginosa san-ai: The process comparison analysis by statistical approach / Proizvodnja ramnolipida i lipaze iz Pseudomonas aeruginosa san-ai - optimizacija procesa primenom metode odzivnih površina
(Association of Chemical Engineers of Serbia, 2013)
Pseudomonas aeruginosa has been repeatedly reported as a powerful producer of rhamnolipid biosurfactants as well as hydrolytic enzymes. In this study, the effects of four fermentation factors were evaluated using response ...
The antioxidant properties of dried extracts from spent espresso coffee / Antioksidativna svojstva sušenih ekstrakata iz otpadne espreso kafe
(Association of Chemical Engineers of Serbia, 2013)
The importance of coffee waste utilization is based on the fact that it contains a large amount of biologically valuable components. Preparation of espresso coffee produces substantial quantities of polyphenolic acids that ...
Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process / Uticaj radnih parametara na efikasnost uklanjanja jona olova pomoću kompleksirajuće-mikrofiltracionog procesa
(Association of Chemical Engineers of Serbia, 2012)
The majority of lead content found in the environment is a result of human activities. Heavy metals can be hazardous because they tend to bioaccumulate. A complexation-microfiltration process for the removal of Pb(II) ions ...
Roughness measurement as an alternative method in evaluation of cavitation resistance of steel / Merenje hrapavosti kao alternativna metoda u proceni kavitacione otpornosti čelika
(Association of Chemical Engineers of Serbia, 2013)
The purpose of this study was to investigate possible application of roughness measurement in the evaluation of resistance of steel under conditions of cavitation effect, where these materials are commonly used. Different ...
Synthesis and characterization of thermosensitive hydrogels and the investigation of modifiedrelease of ibuprofen / Sinteza i karakterizacija termoosetljivih hidrogelova i ispitivanje modifikovanog oslobađanja ibuprofena
(Association of Chemical Engineers of Serbia, 2013)
The method of the synthesis of poly(N-isopropylacrylamide-co-2-hydroxypropyl methacrylate) hydrogels obtained by radical polymerization is described. Their characterization was carried out by the determination of the ...
Chemometric characterization of the hydrogen bonding complexes of secondary amides and aromatic hydrocarbons / Hemometrijska karakterizacija vodonično-vezanih kompleksa sekundarnih amida i aromatičnih ugljovodonika
(Association of Chemical Engineers of Serbia, 2012)
This paper reports the results of the study of hydrogen bonding complexes between secondary amides and various aromatic hydrocarbons. The possibility of using chemometric methods was investigated in order to characterize ...