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Приказ резултата 31-40 од 63
Effects of thermal treatment on the microstructures of sol-gel synthesized La3+ + PEG doped alumina / Uticaj termičkog tretmana na mikro-strukturu alumine sa dodatkom PEG-a i La3+ dobijene sol-gel postupkom
(Zbornik radova Tehnološkog fakulteta, Leskovac, 2009)
Active porous alumina was prepared via a sol-gel method and subjected to thermal treatment in the temperature range 500 - 1200°C. The effect of calcinations temperature, polyethylen glycol combined with La3+, added to the ...
Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
(Technical Faculty, Bor, 2009)
Changes in the microstructure parameters, phase composition and magnetic properties of rapid quenched Nd-rich Nd14Fe79B7 alloy caused by thermomagnetic measurement (TM) were studied using XRD methods of phase analysis, ...
A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content
(International Institute for the Science of Sintering, Beograd, 2009)
Changes in the phase composition and magnetic properties of three types of commercial Nd-Fe-B alloys with different Nd content - low (10-12 wt%), near stoichiometric (21-25 wt%) and rich (26-29 wt%) caused by thermomagnetic ...
Study of Nd-Fe-B alloys with nonstoichiometric Nd content in optimal magnetic state
(International Institute for the Science of Sintering, Beograd, 2009)
Characterization of two rapid-quenched Nd-Fe-B alloys with nonstoichiometric Nd content in the optimized magnetic state was carried out using the X-ray diffractometry (XRD), 57Fe Mössbauer spectroscopic phase analysis (MS), ...
A mass transfer heterogeneous in systems by the adsorption method
(Association of the Chemical Engineers of Serbia, 2009)
A mass transfer coefficient between: A liquid and single sphere and a liquid And a column wall in packed and fluidized beds of a spherical inert Particle have been studied experimentally using the adsorption method. The ...
Eksperimentalno i računarsko proučavanje mehanizma reakcije ketona sa bromoformom / Experimental and computational study of the mechanism of the reaction of ketones with bromoform
(Универзитет у Београду, Хемијски факултет, 2009)
U оvој dоktоrskој disеrtаciјi ispitаn је, i еkspеrimеntаlnо i rаčunаrski, mеhаnizаm rеаkciје kеtоnа sа brоmоfоrmоm. Еkspеrimеntаlnо ispitајući оvај mеhаnizаm rаzviјеna је i оptimizоvаnа nоvа „one-pot“ mеtоdа zа sintеzu ...
Characterization of trypsin-like enzymes from the midgut of Morimus funereus (Coleoptera: Cerambycidae) larvae / Karakterizacija tripsinima-sličnih enzima srednjeg creva larvi Morimus funereus (Coleoptera: Cerambycidae)
(University of Belgrade, University of Novi Sad, 2009)
The pH along the midgut of M. funereus larvae had different values, being acidic in the anterior section and basic in the middle and posterior sections. Elastase- and chymotrypsin-like activities were highest in the middle, ...
Pyrrolizidine alkaloids from seven wild-growing Senecio species in Serbia and Montenegro / Pirolizidinski alkaloidi iz sedam samoniklih biljnih vrsta roda Senecio koje rastu u Srbiji i Crnoj Gori
(Serbian Chemical Society, 2009)
The genus Senecio (family Asteraceae) is one of the largest in the world. It comprises about 1100 species which are the rich source of pyrrolizidine alkaloids. Plants containing pyrrolizidine alkaloids are among the most ...
Supercritical carbon dioxide extraction of antioxidants from rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.) / Natkritična ekstrakcija antioksidanasa iz ruzmarina (Rosmarinus officinalis L.) i žalfije (Salvia officinalis L.)
(Serbian Chemical Society, 2009)
The aim of the present study was to isolate and characterize antioxidant extracts obtained from dried leaves of rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.), originating from the southern Balkan ...
A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives / Proučavanje novih kompleksa kobalta(II) sa oktaazamakrociklom i aminokarboksilatima ili njihovim derivatima
(Serbian Chemical Society, 2009)
Four new air-stable mixed-ligand Co(II) complexes having the general formula [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-methylglycine/N,N-dimethylglycine, Z = - 4BF , qH2O=4 or 3; HY=S-norvaline/S-valine Z=-ClO4 , qCH3CN = 0.5; ...