Search
Now showing items 11-20 of 71
Sulphatization of manganese slime from zinc electrolysis with ferrosulphate
(Wiley, Hoboken, 1998)
The kinetics and mechanism of the sulphatization of manganese slime from the zinc electrolysis with Fe(ll) sulphate was studied. The priority of chemical reactions was determined on the basis of the results of thermodynamic ...
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 ...
Rheological behavior of cured acrylate-terminated unsaturated copolyesters
(Wiley-VCH Verlag Gmbh, Weinheim, 1998)
The viscoelastic properties of cured acrylate-terminated copolyesters were studied by means of dynamic mechanical analysis. The influence of terminal double bonds, as well as of the cis-trans configuration and distribution ...
Immobilization of lipase from Candida rugosa on a polymer support
(Springer, New York, 1998)
Lipase from Candida rugosa was immobilized by adsorption onto a macroporous copolymer support. Under optimum conditions the maximum amount of protein bound was 15.4 mg/g and the immobilization efficiency was 62%. The ...
Template effect in caesium selective phenolic resins
(Kluwer Academic Publ, Dordrecht, 1998)
Two new phenolic resins have been synthesised by alkaline polycondensation of resorcinol and acetaldehyde using template polymerisation. The extraction properties of the resins have been evaluated in competitive extraction ...
Kinetics of the reactions of pyridine and pyridine-N-oxide carboxylic acids and substituted benzoic acids with diazodiphenylmethane in various alcohols
(Sage Publications Ltd, London, 1998)
Solvent effects on the reactivity of pyridine and pyridine-N-oxide carboxylic acids and p-substituted benzoic acids in their reaction with diazodiphenylmethane (DDM) in alcohols have been investigated and the rate constants ...
Synthesis of cordierite powder performed under the conditions of periodic ultrasonic fields activity
(Trans Tech Publications Ltd, Durnten-Zurich, 1998)
In this article, the influence of periodic physical field, on the given system, is presented by the example of the ultrasonic spraying of various aerosol precursors used for ceramic powder synthesis. A general model, ...
Hydridic and electrocatalytic properties of hypo-hyper-d-electronic combinations of transition metal intermetallic phases
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
Hydridic and electrocatalytic properties of hypo-hyper-d-electronic combinations of transition metals in their intermetallic phases and alloys for the hydrogen storage, hydridic batteries and its electrode reactions (HELR) ...
Underpotential deposition of lead onto Pt(100) in acid solutions: Adsorption isotherms and interface structures
(Royal Soc Chemistry, Cambridge, 1998)
The underpotential deposition (UPD) of Pb onto Pt(100) in pure perchloric acid and in solution containing Br- was examined by classical rotating ring disk electrode (RRDPt(100)E) electrochemical methods in combination with ...
Oxygen reduction on a duplex stainless steel
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
O-2 reduction on duplex stainless steel was investigated in neutral and alkaline solutions with and without the presence of chloride ions. All polarization curves showed hysteresis with higher reaction rate in positive ...