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Now showing items 31-40 of 1558
Fracture micromechanisms in overaged 7000 alloy forgings
(Journal of Alloys and Compounds, 2007)
Micromechanisms controlling the fracture damage in 7000 alloy forgings are studied for T73-type heat treatments. Insight into the fracture modes are obtained by varying the microstructural attributes associated with the ...
Mechanism of electrical breakdown of gases for pressures from 10 -9 to 1 bar and inter-electrode gaps from 0.1 to 0.5 mm
(Institute of Physics Publishing, 2007)
This paper discusses the mechanisms of gas breakdown at low values of pressure and inter-electrode gap, i.e. in the vicinity of the Paschen minimum. In this area of pressure and inter-electrode gap values, breakdown occurs ...
Chitosan application on wool before enzymatic treatment
(Wiley Periodicals, Inc., 2005)
The influence of a chitosan application on wool fabric before a treatment with a proteolytic enzyme has been investigated. The enzymatic treatment enhances whiteness and confers shrink resistance to wool, but an increase ...
The growth of ruby single crystals / Раст монокристала рубина
(Serbian Chemical Society, 2005)
Ruby (Cr:Al2O3) single crystals were grown by the Czochralski technique in an argon atmosphere. The critical crystal diameter dc = 1.0 cm and the critical rate of rotation ωc = 20 rpm were calculated by equations of the ...
Structural evolution of nanostructured barium titanate thin film sol-gel derived
(Springer, New York, 2008)
Ferroelectric nanostructured barium titanate (BT) thin films derived by a modified sol-gel process were formed by a deep coating method on Si (100) substrate. In this work was investigated the influence of different types ...
Investigations of cell immobilization in alginate: rheological and electrostatic extrusion studies
(Wiley, Hoboken, 2006)
In this study, the process of electrostatic extrusion as a method for cell immobilization was investigated. We have assessed the effects of concentrations of yeast cells (as a model cell type) and Na alginate on the size ...
Synthesis and characterization of thermoplastic copolyester elastomers modified with fumaric moieties
(Serbian Chemical Society, 2001)
A series of poly(ether-ester)s derived from dimethyl terephthalate (DMT), dimethyl fumarate (DMF), 1,4-butandiol (BD) and poly(tetramethylene oxide) (PTMO, M̄n = 1000 g/mol) was synthesized in a two stage process involving ...
A critical review of relationships for predicting the dynamic viscosity coefficient of liquid organic compounds at saturation conditions / Kritički prikaz modela za predskazivanje koeficijenta dinamičkog viskoziteta zasićene tečnosti organskih supstanci
(Association of Chemical Engineers of Serbia, 2001)
This paper presents some empirical relationships for predicting the saturated liquid dynamic viscosity coefficient of organic compounds. Eleven models were tested using 295 experimental points for 34 organic compounds. On ...
Preparation of a-TCP cements from calcium deficient hydroxyapatite obtained by hydrothermal method
(Trans Tech Publications Ltd, Durnten-Zurich, 2006)
In this paper the synthesis of bioactive cement based on al-Ca-3(PO4)(2) (a-TCP) and calcium deficient hydroxyapatite (CDHAp), obtained by hydrothermal method from CaCl2, EDTA, NaH(2)PO(4)(.)12H(2)O and urea at 160 degrees ...
Application of electrostatic extrusion - Flavour encapsulation and controlled release
(MDPI, Basel, 2008)
The subject of this study was the development of flavour alginate formulations aimed for thermally processed foods. Ethyl vanilline was used as the model flavour compound. Electrostatic extrusion was applied for the ...