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Prikaz rezultata 31-40 od 181
Correlation analysis of IR, 1 H NMR and UV spectral data of alkyl and aryl 4,6-disubstituted-3-cyano-2-pyridones. Part I
(Arkivoc, 2006)
Spectral characteristics of the two series of previously synthesized and identified 4,6-disubstituted-3-cyano-2-pyridones were determined, and corresponding 1 H NMR chemical shifts and IR and UV frequencies were correlated ...
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 ...
Surface characteristics and modification of different carbon materials
(7th Conference of the Yugoslav Materials Research Society - Recent Developments in Advanced Materials and Processes, YUCOMAT VII, 2006)
In this work, surface characteristics of different carbon materials were investigated. The materials under consideration were: activated carbon, carbon monolith, carbon felt and glassy carbon (powder, plate and broken ...
Effect of temperature on the excess molar volumes of some alcohol plus aromatic mixtures and modelling by cubic EOS mixing rules
(Elsevier, 2006)
Densities of the (methanol + benzene), (ethanol + benzene), (methanol + chlorobenzene) and (ethanol + chlorobenzene) mixtures have been measured at six temperatures (288.15, 293.15, 298.15, 303.15, 308.15 and 313.15 K) and ...
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 ...
Optimization of the electrostatic droplet generation process for controlled microbead production: Single nozzle system / Optimizacija elektrostatičkog generisanja čestica u cilju kontrolisanja njihovih mikronskih veličina - sistem sa jednom mlaznicom
(Association of the Chemical Engineers of Serbia, 2006)
The aim of this study was to optimize the electrostatic extrusion process for producing small, spherical and uniform microbeads with different fluid viscosities by varying the operating parameters in very wide ranges. ...
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 ...
Prediction of the Lee retention indices of polycyclic aromatic hydrocarbons by artificial neural network
(Elsevier, Amsterdam, 2006)
A quantitative structure retention relationship technique using an artificial neural network (ANN) has been used for the prediction of the Lee retention indices for PAHs on SE-52 and DB-5 stationary phases. The selected ...
Supercritical carbon dioxide extraction and fractionation of hyper for in and adhyperforin from St. John's Wort (Hypericum perforatum L.)
(CHISA 2006 - 17th International Congress of Chemical and Process Engineering, 2006)
Plants of the genus Hypericum have been used as traditional medicinal plants in various parts of the world. St. John's Wort (Hypericum perforatum L.) has been reported as an antidepressive, antiviral, antimicrobial, ...
Application of nonlinear frequency response to investigation of membrane transport
(Taylor & Francis Inc, Philadelphia, 2006)
The concept of higher order frequency response functions, used for investigation of weekly nonlinear systems by frequency response techniques, is applied to investigation of membrane systems. Isothermal permeation of single ...