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Osmotic and activity coefficients of {yK(2)SO(4)+(1-y)Mg(NO3)(2)}(aq) at the temperature T = 298.15 K
(Academic Press Ltd, London, 1998)
'The osmotic coefficients of the mixed electrolyte solution {yK(2)SO(4) + (1 - y)Mg(NO3)(2)}(aq) have been measured by the isopiestic method, at the temperature T = 298.15 K. The activity coefficients of K2SO4 and Mg(NO3)(2) ...
Immobilization of lipase on a hydrophobic zeolite type Y
(Serbian Chemical Society, Belgrade, 1998)
Lipase from Candida cylindracea was immobilized by adsorption on a hydrophobic zeolite type Y. The maximal amount of bound protein of 8.2 mg g(-1) and an immobilization efficiency of 33% were achieved under optimum conditions. ...
Electrooxidation of H-2, CO, and H-2/CO mixtures on a well-characterized Pt70Mo30 bulk alloy electrode
(Amer Chemical Soc, Washington, 1998)
The electrochemical oxidation of hydrogen (H-2), carbon monoxide (CO), and their mixtures (500 ppm-2%) on a well-characterized Pt70Mo30 bulk alloy was examined using the rotating disk electrode technique in 0.5 M H2SO4 at ...
Some applications of optical fibres in medicine and disturbances in biomedical area
(5th Congress on Modern Optics, OPTIKA 1998, 1998)
The development of medical equipment, telecommunications and computer's technology provides new possibilities for diagnostic purposes. Usually, it is necessary to use optical image or noise transmission. The application ...
Electrodeposition of silver from nitrate solution: Part II. Mechanism of the effect of phosphate ions
(Springer, Dordrecht, 1998)
The mechanism of compact Ag-film formation by electrolysis from nitrate solution with addition of small amounts of phosphate ions is elucidated. It is shown that the phosphate ions exert their effect by lowering the exchange ...
Synthesis of substituted 3-cyano-2-pyridones: Part III - Enzyme kinetics
(Natl Inst Science Communication, New Delhi, 1998)
Lipases from Candida cylindracea and hog pancreas have been used to study the reaction kinetics of enzyme catalysed synthesis of substituted 3-cyano-2-pyridones by cyclization of 1,3-diketones with cyanoacetamide. Influence ...
Synthesis of mullite nanostructured spherical powder by ultrasonic spray pyrolysis
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
In this paper the synthesis of nanostructured spherical particles of mullite powders by ultrasonic spray pyrolysis is presented. The mullite crystallization and the nanostructure development during heating were examined ...
Adsorption thermodynamics of organics on nickel- and copper-hexacyanoferrates
(Trans Tech Publications Ltd, Durnten-Zurich, 1998)
Adsorption of various organics on Ni- and Cu-hexacyanoferrates was investigated by gas-solid chromatography (inverse gas chromatography). Adsorption was studied in the temperature region from 80 to 95 degrees C at zero ...
Viscoelastic properties of Na-carboxymethylcellulose solutions
(Serbian Chemical Society, Belgrade, 1998)
The rheological characteristics of 5% solutions of Na-carboxymethylcellulose (CMC)I of various origin were investigated. Depending on the molar mass (1.25-1.94 x 10(5) g mol(-1)), i.e., the degree of polymerization (545-851) ...
Impact of plate types on refining and specific energy consumption
(Editura Acad Romane, Bucuresti, 1998)
Fibre refining is one of the most important stages of mechanical and chemical fibre treatment with direct impact on the quality of the final product-paper. The raw material to be refined and the requirements regarding the ...