Претраживање
Приказ резултата 31-40 од 43
Photochemical and Beckmann rearrangement of (Z)-cholest-4-en-6-one oxime / Fotohemijsko i Bekmanovo premeštanje(z)-holest-4-en-6-on oksima
(Serbian Chemical Society, 2004)
Beckmann rearrangement of (Z)-cholest-4-en-6-one oxime (4) (prepared in 4 steps starting from cholest-5-en-3β-ol ο1)) with thionyl chloride in dioxane solution afforded an enamide-type lactam, i.e. 7-aza-B-homocholest-4-en-6-one ...
Laser Application in Procesing, Technology, Conservation and Experience of Artwork based on light Metals
(Belgrade: Association of Metallurgical Engineers Serbia and Montenegro, 2004)
Application of lasers in fine arts, in connection even with light metals, exists
almost half a century. Due to multifold role of lasers, only few approaches, showing
either potential applications or applications already ...
Zlato u kvarcno-hematitskim mineralizacijama okoline Aldinca na Staroj planini / Gold in quartz-hematitic mineralisations of the Aldinac area at Stara planina Mountain
(Geoinstitut, 2004)
Rudnu zonu Aldinca pretežno izgrađuju gabroidne stene, predstavljene piroksenskim gabrovima i dijabazima, u koje su utisnute granitoidne stene, pretežno granodiorit-porfiriti, a u manjoj meri, kvarc-latiti i daciti. ...
The effect of the particle shape and structure on the flowability of electrolytic copper powder, III: A model of the surface of a representative particle of flowing copper powder electrodeposited by reversing current / Uticaj oblika I strukture čestica na tečljivost elektrolitičkog bakarnog praha III - model površine reprezentativne čestice tečljivog bakarnog praha dobijenog elektohemijskim taloženjem reversnom strujom
(Serbian Chemical Society, 2004)
The structure of the surface of copper powder particles is discussed and correlated with the lowest apparent density at which copper powder can still flow. It is shown that such structures can be easily obtained in the ...
Flavonoids from flowers of Cephalaria pastricenis and their antiradical activity / Flavonoidi iz cvetova Cephalaria pastricensis i njihova antiradikalska aktivnost
(Serbian Chemical Society, 2004)
Two flavonoid glycosides 1 and 2 having the luteolin structure were isolated from flowers of the endemic plant species Cephalaria pastricensis. They were identified by 1H and 13C NMR, as well as UV/Vis spectroscopy. The ...
The effect of preparation of aluminum surface on surface roughness / Uticaj pripreme površine aluminijuma na površinsku hrapavost
(Belgrade, Serbia : Engineering Society for Corrosion, 2004)
Aluminum samples were electrochemically polished in one of three solutions for electrochemical polishing. On those samples the surface roughness was measured. The effect of the anode treatment on surface roughness was also ...
The effect of preparation of aluminum surface on surface reflection / Uticaj pripreme površine aluminijuma na površinsku refleksiju
(Belgrade, Serbia : Engineering Society for Corrosion, 2004)
Aluminum samples were electrochemically polished in one of three solutions for electrochemical polishing. On those samples the surface reflection was measured. The effect of the anode treatment as the interface between the ...
The effect of deposition time on the structure of the top coating of nickel electrodeposited onto aluminum / Uticaj vremena taloženja na strukturu završne prevlake nikla na aluminijumu
(Belgrade, Serbia : Engineering Society for Corrosion, 2004)
The microstructure of the chemical coating of zinc on aluminum, as well as electrodeposited nickel coating on chemically deposited zinc were investigated with change of one parameter only-deposition time. Based on the ...
The effect of the particle shape and structure on the flowability of electrolytic copper powder IV: The internal structure of the powder particles / Uticaj oblika i strukture čestica na tečljivost elektrolitičkog bakarnog praha IV - unutrašnja struktura čestica praha
(Serbian Chemical Society, 2004)
The structure of powder particleswas analysed by considering their cross sections. It was shown that the structure of powder particles of nonsieved flowing powders is sufficiently dense to produce a continuous surface, ...
Sinteza estar-siloksanskih multiblok kopolimera
(Association of the Chemical Engineers of Serbia, 2004)
U radu je opisana sinteza blok kopolimera sa poli(butilentereftalatnim) tvrdim segmentima i poli(dimetilsiloksanskim) mekim segmentima. Cilj rada je da se ispita iproveri da lije primenljiva klasična metoda dvostepene ...