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Приказ резултата 161-170 од 200
Modification of Corona Pretreated Polyester fabrics with Colloidal TiO2 Nanoparticles for Imparting Specific Properties
(Institute of Textile Machinery and High Performance Materials Technology (ITM), Dresden, 2008)
This study is aimed to highlight the possibility of using a corona treatment for fiber surface activation, which can facilitate the loading of colloidal TiO2 nanoparticles onto the polyester fabrics and thus improve their ...
Preparation of biodegradable porous poly(butylene succinate) microspheres / Dobijanje poroznih biodegradabilnih mikrosfera poli(butilen sukcinata)
(Association of Chemical Engineers of Serbia, 2008)
The aim of this study was to determine the optimal conditions for the fabrication of porous microspheres based on poly(butylene succinate), PBS. The biodegradable non-porous PBS microspheres were prepared by the oil-in-water ...
Crosslinked polyurethanes based on hyperbranched polymers / Umreženi poliuretani na bazi hiperrazgranatih polimera
(Association of Chemical Engineers of Serbia, 2008)
In this paper, two samples of polyurethane (PU) crosslinked with hydroxy -functonal hyperbranched aliphatic polyester of the second pseudo generation were investigated. For the synthesis of these crosslinked PUs two different ...
Investigation of mechanism and kinetics of chalcopyrite concentrate oxidation process
(Croatian Metallurgical Society, 2008)
The oxidation process of chalcopyrite concentrate "Rudnik" (Serbia) was investigated by DTA-TG measurements under air conditions in the temperature range of 298 - 1173 K, as well as by XRD analysis of the oxidation products ...
Kinetics of sunflower oil methanolysis at low temperatures
(Elsevier Ltd, 2008)
The kinetics of the sunflower oil methanolysis process was studied at lower temperatures (10-30 °C). The sigmoidal kinetics of the process was explained by the mass transfer controlled region in the initial heterogenous ...
Direct observation of confined acoustic phonons in the photoluminescence spectra of a single CdSe-CdS-ZnS core-shell-shell nanocrystal
(Amer Physical Soc, College Pk, 2008)
We report on the direct observation of confined acoustic phonons in the photoluminescence spectra of single CdSe-CdS-ZnS nanocrystals, whose ligands were exchanged to poly(ethylene oxide) (PEO) before they were embedded ...
Low concentration volatile organic pollutants removal in combined adsorber-desorber-catalytic reactor system / Integrisani sistem adsorber-desorber-katalitički reaktor za uklanjanje malih koncentracija organskih zagađujućih materija
(Association of Chemical Engineers of Serbia, 2008)
The removal of volatile organic compounds (VOCs) from numerous emission sources is of crucial importance due to more rigorous demands on air quality. Different technologies can be used to treat the VOCs from effluent gases: ...
Kinetics and sintering mechanisms of hydro-thermally obtained hydroxyapatite
(Elsevier, 2008)
In this paper, the kinetics and sintering mechanism of hydro-thermally synthesized hydroxyapatite in the temperature range 900-1100 degrees C are presented. It was found that at 900 degrees C, the sintering process is very ...
Evaluation of damage of steam pipeline steel using local approach to fracture
(ASME 2008 Pressure Vessels and Piping Conference, PVP2008, 2008)
In the paper, the level of damage of steam pipeline steel after about 100,000 hours at 540 degrees C (1004 degrees F) under pressure of 42 bars (609 PSI) is analyzed. Material degradation is estimated using a combined ...
Bioethanol Production from Corn Meal Hydrolyzates by Immobilized Saccharomyces cerevisiae var. ellipsoideus
(2008 Joint Central European Congress of the 4th Central European Congress on Food, CEFood 2008 and 6th Croatian Congress of Food Technologists, Biotechnologists and Nutritionists, 2008)
Bioethanol can be produced by fermentation of sugars from waste agricultural materials. In this process immobilized yeast offer advantage over free cell suspension with regard to ethanol productivity, fermentation rate and ...