In the latter part of the XIX century Don Vicente Fernández, professor of the Colegio del Estado, proposed that a journal should be edited covering scientific themes such as mathematics, physics, chemistry, zoology, botany, mineralogy and astronomy. His idea became…

Ethylene emissions are characteristic of primary exhalations of vehicular combustion processes. Their reac­tion with hydroxyl radicals in the presence of solar UV radiation promotes the production of ozone. Previ­ously, our research group reported the measurement of real-time profiles of ethylene…

Este trabajo es básicamente una bibliografía anotada, organizada por una línea temporal que cubre las características históricas y conceptuales principales de lo que se ha dado en llamar antropología simbólica en la tradición disciplinar. Como homenaje al 70º aniversario de…

A neural network (NN) technique is used to obtain vertical profiles of temperature from NOAA-15 and 16 Advanced Microwave Sounding Unit-A (AMSU-A) measurements over the Indian region. The corresponding global analysis data generated by National Center for Environmental Prediction (NCEP)…

ENSO impacts on the Gulf of California ecology remains a matter of controversy, because of contrasting field observations. In the present study, interannual variability is examined from fields of the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) surface chlorophyll (Chl-a) from September…

This article presents the authors' reflections on important issues related to how change occurs in complex social environments. These explorations have led the authors to propose a way of thinking, based on games for the formulation of a planning method.…

Las imágenes cristianas, herederas de los sistemas narrativos romanos, expresaron visualmente los contenidos escriturarios. Uno de los elementos notables lo constituye la manera de representar la secuencia temporal en sus dos posibles dimensiones: humana y divina. Un recorrido por el…

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Los estudiantes universitarios presentan algunas dificultades al momento de leer y escribir géneros relacionados con su disciplina, debido a que cualquier área del conocimiento implica formas particulares de escribir y ellos no reciben el adecuado entrenamiento lingüístico. Por tanto, este…