Diana M. Rodríguez

Limiting values of diffusion coefficients of glycine, alanine,

Abstract.The side chain effect on transport in ionic aqueous salt solutions was investigated for

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-amino butyric acid, norvaline and norleucine in a relevant physiological aqueous medium

α-amino acids glycine, alanine,

Double Generalized Spatial Econometric Models

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EVALUACIÓN SENSORIAL E INSTRUMENTAL DE TEXTURA DE SALCHICHONES TIPO ESTÁNDAR QUE CONTIENEN UN EXTENSOR CÁRNICO DE PASTA DE POLLO

α-amino butyric acid, norvaline, and norleucine --that together define a chemical homologous series based on the length of the characteristic side chain which increases from zero to four carbons, respectively. Binary mutual diffusion coefficients at infinitesimal concentration in aqueous solutions of NaCl (0.15 mol kg-1) are measured by means of Taylor dispersion technique for this series and significant differences were found against previous published results for identical systems in pure water. In this way, NaCl effect on the transport of each amino acid is thus assessed and discussed in terms of salting-out effects. Also, solvated Stokes hydrodynamic radii were computed for the series showing comparable results in water and NaCl solution. The new information should prove useful in the design and characterization of transport-controlled systems in physiological and pharmacological studies.Graphical abstract

Intervalos de confianza e intervalos de credibilidad para una proporción

The authors offer a unified method extending traditional spatial dependence with normally distributed error terms to a new class of spatial models based on the biparametric exponential family of distributions. Joint modeling of the mean and variance (or precision) parameters is proposed in this family of distributions, including spatial correlation. The proposed models are applied for analyzing Colombian land concentration, assuming that the variable of interest follows normal, gamma, and beta distributions. In all cases, the models were fitted using Bayesian methodology with the Markov Chain Monte Carlo (MCMC) algorithm for sampling from joint posterior distribution of the model parameters.

Effect of temperature on the partial molar volume, isentropic compressibility and viscosity of DL-2-aminobutyric acid in water and in aqueous sodium chloride solutions

Background: Mechanically separated chicken (MSC) or chicken paste, is a finely textured chickenmeat, and one of the principal ingredients used in the meat in...