2003

The effects of a short-term (80 min) exposure to 222 _uM aluminum (AI) on the protein content and expression and on peroxidase activity and isoenzymes in the primary root of maize were evaluated. Two inbred lines differing in their leveI…

This thesis examines the claims of Jeffrey Timm and James Buchanan that the field of Comparative Philosophy is moving in a postmodern direction. I examine their conception of the postmodern and compare to both the most influential views of postmodernism…

El objetivo de esta tesis es el estudio de algunos problemas diofánticos. Unos relacionados con ternas pitagóricas, y otros con funciones aritméticas.
En concreto se empieza, en el capítulo 1, por dos breves notas históricas sobre la aritmética de Diofanto…

El objetivo principal de esta tesis doctoral es la fundamentación de técnicas de simulación y modelos hidrodinámicos adecuados para la simulación de fluidos simples y complejos a escala mesoscópica. El problema general de los fluidos complejos, desde el punto de…

A procedure to determine the best image range of distances that can be obtained from an aphakic eye is presented. Corneal surfaces are calculated from videokeratographic data. Light distributions at different distances inside the eye are calculated with a near-field…

Bleached holograms are one of the most interesting techniques used to produce phase holograms of high quality on photographic emulsions. Of particular interest is the method of fixation-free rehalogenating bleaching. Using Kogelnik's coupled-wave theory we shall obtain information about the…

When tropical forages are used in dairy cattle feeding, the diet should be commonly supplemented with zinc. Instrumental neutron activation analysis shows to be a very adequate method to determine zinc in forages, due its good accuracy, and its sensibity…

We present three ways of treating the problem of fluid flow in a hollow cylinder. One method involves a differential equation, and the other two involve more physical insight. We discuss the relative advantages of each method., The following article…

Cables are one of the common structures studied in a first-year engineering mechanics course (statics), since the flexible cable is one of the usual methods of supporting loads. For example, the suspension bridge has been used for many centuries and…