Претраживање
Приказ резултата 21-30 од 73
The use of image analysis program for the determination of surface deterioration of refractory specimen during thermal shock / Korišćenje programa za analizu slike za određivanje stepena oštećenja vatrostalnog uzorka pri termošoku
(Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd, 2006)
During examination of refractory specimen, one of the most important characteristics is their resistance to thermal shock. Standard method of testing is based on monitoring the surface shanging during thermal stability ...
St. John's Wort Hypericum perforatum L.: Supercritical extraction, antimicrobial and antidepressant activity of extract and some component / Kantarion (Hypericum perforatum L.) - natkritična ekstrakcija, antimikrobna i antidepresivna aktivnost ekstrakta i pojedinih komponenti
(Association of Chemical Engineers of Serbia, 2006)
St. John's Wort, the Hypericum perforatum L. is one of the most analyzed plant species today. Plant was characterized with a wide ecological spectrum and is a plant with beautiful yellow flowers. St. John's Wort was used ...
Formation of oxygen complexes in controlled atmosphere at surface of doped glassy carbon
(Indian Acad Sciences, Bangalore, 2006)
The effects of boron and phosphorus incorporation in phenolic resin precursor to the oxidation resistance of glassy carbon have been studied. In order to reveal the nature and composition of the oxygen complexes formed at ...
The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys / Prelaz sa ravnog fronta kristalizacije na ćelijski i dendritni rast kod kristalizacije legure Al-Cu
(Serbian Chemical Society, Belgrade, 2006)
The evolution of the crystallization front from a planar to a dendritic one as a function of the G L/(Rc 0) parameter was investigated during the crystallization of Al-Cu alloys by the vertical Bridgman method. Six series ...
Silver in medieval Serbia / Srebro u srednjovekovnoj Srbiji
(Savez inženjera i tehničara Srbije, Beograd, 2006)
In Serbia there were several polimetal ores deposits from which silver was exploited during ancient times and middle ages. Large silver production in middle ages, during Nemanjić dynasty, contributed to development and ...
Immobilized lipases as practical catalysts / Imobilisane lipaze kao katalizatori
(Srpsko hemijsko društvo, Beograd, 2006)
Attractive features of lipase systems include versatility, substrate selectivity, regioselectivity, enantioselectivity and catalysis at ambient temperatures and pressures. To fully exploit the technical and economical ...
Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route / Aktivnost i stabilnost titanskih anoda sa prevlakom od oksida rutenijuma dobijenom alkoksidnim postupkom
(Serbian Chemical Society, Belgrade, 2006)
Titanium anodes with an active RuO2 coating of two different thicknesses were prepared from the oxide suspended in ethanol ("ink" method), while the oxide itself was synthesized by the hydrolysis of ruthenium ethoxide in ...
Sterilization of hydroxyapatite/poly-L-lactide composite biomaterial by gamma irradiation / Sterilizacija hidroksiapatit/poli-L-laktid kompozitnog biomaterijala dejstvom γ-zračenja
(Savez inženjera i tehničara Srbije, Beograd, 2006)
The effects of gamma irradiation on the structure and properties of hydroxyapatite/poly- Llactide (HAp/PLLA) biomaterial have been investigated. Effects of radiation on microstructure, degradation of polymer part and thermal ...
Correlation analysis of IR, H-1 NMR and UV spectral data of alkyl and aryl 4,6-disubstituted-3-cyano-2-pyridones. Part I
(Arkat Usa Inc, Gainesville, 2006)
Spectral characteristics of the two series of previously synthesized and identified 4,6-disubstituted- 3-cyano-2-pyridones were determined, and corresponding H-1 NMR chemical shifts and IR and UV frequencies were correlated ...
Synthesis of N-and N,N-dialkyl-S-alkylthiolcarbamates by the rearrangement of N-and N,N-dialkyl-O-thioncarbamates / Sinteza N- i N,N-dialkil-S-alkiltiol-karbamata premeštanjem N- i N,N-dialkil-O-alkiltionkarbamata
(Association of Chemical Engineers of Serbia, 2006)
A series of N- and N,N-dialkyl-S-alkylthiolcarbamates were synthesized by the rearrangement of N- and N,N-dialkyl-O-alkylthioncarbamates in the presence of diethyl sulfate. The synthesis of some compounds without catalyst ...