Resumen

Resumen

Resumen

Only a few paleornagnetic data are available on Mexican rocks (Pal and Urrutia, 1977). Urrutia, and Pal (1977) based on a study of Tertiary rocks from Jalisco have pointed out the possibility of tectonic rotation of Mexico with respect to…

A review of solar activity minima and the relationship of the auroral and geomagnetic activities suggest that solar minima are not evident in the available data., Una revisión de las mínimas de actividad solar y la relación entre la actividad…

The proposed method corrects for inhomogeneity in the azimuthal distribution of stations, by fitting the residuals to a cosine function of the azimuth. Early arrivals are assigned greater weights than late arrivals. The weights are optimized experimentally by using data…

El objetivo de este estudio fue conocer las principales estrategias de afrontamiento en una muestra de pacientes con distimia y comprobar cómo se formaron estas estrategias en este grupo de diagnóstico. Se analizó una base de datos con 24 historias…

Data from µ-meson telescopes, at different underground depths, have been compared with the predictions of a solar-controlled mechanism proposed by Swinson. The observations at ground level and at moderate depths show a significant field-polarity dependent effect of the kind envisaged…

Uranium, Thorium and Potassium contents of some igneous and sedimentary rocks of the Guanajuato Mineral District have been measured by γ-ray scintillation spectrometry. Preliminary measurements show that the area studied is not a province of high radioactive contents. The data…

This paper deals with the necessity of implementing a new electric ground conductivity map for planning and development of a medium-wave broadcasting service in Mexico. The use of the Field Attenuation Method with a methodology that simplifies the operations and…