Претраживање
Приказ резултата 31-40 од 699
Influence of heat input on HAZ hardness distribution after surfacing two Q+T steels / Uticaj pogonske energije zavarivanja na raspodelu tvrdoće u ZUT pri navarivanju čelika za poboljšanje
(DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd, 2002)
The aim of this work was to determine the influence of welding heat input on hardness distribution after SURFACING of two quench+temper steels. The results indicate that variation of heat input can partially provide required ...
Alkylation of N-substituted 2-phenylacetamides: Benzylation of N-(4-nitrophenyl)-2-phenylacetamide / Alkilovanje N-supstituisanih 2-fenilacetamida - benzilovanje N-(4-nitrofenil)-2-fenilacetamida
(Serbian Chemical Society, Belgrade, 2002)
N-(4-Nitrophenyl)-2-phenylacetamide was alkylated with benzyl chloride in the presence of powdered potassium hydroxide at different temperatures and in various solvents in order to establish the reactivity and orientation ...
Synthesis, characterization and electrocatalytic activity for ethanol oxidation of carbon supported Pt, Pt-Rh, Pt-SnO2 and Pt-Rh-SnO2 nanoclusters
(Elsevier Science Inc, New York, 2009)
Nanoclusters of Pt, Pt-Rh, Pt-SnO2 and Pt-Rh-SnO2 were successfully synthesized by polyol method and deposited on high-area carbon. HIRTEM and XRD analysis revealed two phases in the ternary Pt-Rh-SnO2/C catalyst: solid ...
In vitro evaluation of the controlled release of antibiotics from liposomes / In vitro ispitivanje kontrolisanog otpuštanja antibiotika iz liposoma
(Association of the Chemical Engineers of Serbia, 2003)
Results of this study have shown significantly prolonged release of selected antibiotic from liposome dispersion as compared to free antibiotic solution of the same initial concentration. Two models of non-steady one-dimensional ...
In vitro tissue cultures: Microencapsulation and bioreactor cultivation / In vitro kulture tkiva - mikroenkapsulacija i bioreaktorska kultivacija
(Institut bezbednosti, Beograd, 2004)
In this paper, two strategies for in vitro tissue cultivation are presented Microencapsulation is aimed for transplantation of functional tissues encapsulated in semi-permeable membranes, which provide efficient transport ...
Crystallization kinetics of K2O·TiO2· 3GeO2 glass studied by DTA
(International Institute for the Science of Sintering, 2008)
Crystallization kinetics of K2O·TiO2· 3GeO2 glass was investigated by differential thermal analysis (DTA). Experiments were performed on powder samples with a particle size < 0.037 mm. The glass samples were heated at ...
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 ...
Thermal analysis in stability examinations of loratadin pellets / Termijske metode u ispitivanju stabilnosti loratadin tableta
(Pharmaceutical Association of Serbia, Belgrade, Serbia, 2002)
Estimation of loading losses of petroleum products from tank trucks / Procena gubitaka isparavanja naftnih derivata prilikom pretakanja
(Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2007)
In this paper was analyzed the quantity of loading losses, which are the primary source of evaporative emissions from tank cars and trucks. Loading losses occur as organic vapors in "empty" cargo tanks are displaced to the ...