Regeneration Mechanism Studied by Potential-Time Response to Sinusoidal Current-Time Function

1997 ◽  
Vol 62 (10) ◽  
pp. 1511-1526
Author(s):  
María-Luisa Alcaraz ◽  
Ángela Molina
Keyword(s):  
Kinetic Parameters ◽  
Rate Constant ◽  
Theoretical Study ◽  
Time Function ◽  
Time Response ◽  
Current Time ◽  
Regeneration Mechanism ◽  
Sinusoidal Current ◽  
Regeneration Processes

A theoretical study of the potential-time response to sinusoidal current applied to static and dynamic electrodes for regeneration processes is presented. Methods for determination of the regeneration fraction, rate constant of the chemical reaction and heterogeneous kinetic parameters are proposed.

Potential-time response for several types of programmed current at most usual electrodes. Theoretical study of CE and EC mechanisms

1991 ◽  
Vol 56 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Ángela Molina ◽  
Manuela López-Tenés
Keyword(s):  
Kinetic Parameters ◽  
Theoretical Study ◽  
Time Response ◽  
Linear Perturbation ◽  
Plane Electrode ◽  
Perturbation Functions ◽  
Non Linear ◽  
Transition Times

The theoretical study of the potential-time response corresponding to the CE and EC mechanisms at the DME by using non linear perturbation functions with the general form I(t) = I0tuewt and I(t) = I0(t1 + t)v is presented. Equations for the potential-time curves and for the transition times have been derived by taking into account the sphericity of the electrode. Methods for determining heterogeneous and homogeneous kinetic parameters are proposed. The expressions corresponding to an null blank period, to an expanding plane electrode and to spherical and plane stationary electrodes, can be deduced as particular cases of the equations obtained in this work.

Discrimination between CEC, CE and EC mechanisms by using a sinusoidal current-time function

1997 ◽  
Vol 42 (9) ◽  
pp. 1351-1359
Author(s):  
María-Luisa Alcaraz ◽  
Ángela Molina ◽  
Manuela López-Tenés
Keyword(s):  
Time Function ◽  
Current Time ◽  
Sinusoidal Current

MEASUREMENT OF STEROID BINDING PROTEINS

1970 ◽  
Vol 65 (1_Suppl) ◽  
pp. S104-S121 ◽  
Author(s):  
E. E. Baulieu ◽  
J. P. Raynaud ◽  
E. Milgrom
Keyword(s):  
Kinetic Parameters ◽  
Binding Proteins ◽  
Binding Specificity ◽  
Binding Parameters ◽  
Target Organs ◽  
Biological Mixtures ◽  
Steroid Binding Proteins ◽  
Steroid Binding ◽  
Steroid Binding Protein

ABSTRACT A brief review of the characteristics of steroid binding proteins found in the plasma and in some target organs is presented, followed by some general remarks on binding »specificity« and binding parameters. Useful techniques for measuring binding parameters at equilibrium are reported, both those which keep the equilibrium intact and those which implicate its disruption. A concept is developed according to which the determination of a specific steroid binding protein is based on the »differential dissociation« of the several steroid binding complexes present in most biological mixtures. Methods which allow determination of the kinetic parameters of the binding systems are also presented. Various representations of the binding and therefore different modes of graphic representation and calculation are discussed, including the recent »proportion graph« method.

Determination of rate constants of redox reactions of second order from current-less potential-time curves by a simplified graphical-numerical method

1983 ◽  
Vol 48 (5) ◽  
pp. 1358-1367 ◽  
Author(s):  
Antonín Tockstein ◽  
František Skopal
Keyword(s):  
Numerical Method ◽  
Explicit Form ◽  
Rate Constant ◽  
Optimization Algorithm ◽  
Rate Constants ◽  
Redox Reactions ◽  
Second Order ◽  
Wide Region ◽  
Recurrent Formula

A method for constructing curves is proposed that are linear in a wide region and from whose slopes it is possible to determine the rate constant, if a parameter, θ, is calculated numerically from a rapidly converging recurrent formula or from its explicit form. The values of rate constants and parameter θ thus simply found are compared with those found by an optimization algorithm on a computer; the deviations do not exceed ±10%.

Chronopotentiometric Study of EC Mechanism Duringthe First Cycle of Alternating Current

1997 ◽  
Vol 62 (5) ◽  
pp. 709-728 ◽  
Author(s):  
Ángela Molina ◽  
Francisco Martínez-Ortiz ◽  
Ricardo Ruiz ◽  
Manuela López-Tenés
Keyword(s):  
Theoretical Result ◽  
Kinetic Parameters ◽  
Theoretical Approach ◽  
Alternating Current ◽  
Transition Time ◽  
Ec Mechanism ◽  
Sinusoidal Current

The theoretical approach to the application of the first period of a sinusoidal current at static and dynamic spherical electrodes for study of EC mechanism is presented. Methods for determining heterogeneous and homogeneous kinetic parameters are proposed. In order to check theoretical result, the rate of benzidine rearrangement was evaluated from transition time measurements.

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