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J. SUÁREZ SÁNCHEZ,WALTER RITTER ORTÍZ,CARLOS GAY GARCÍA,J. TORRES JÁCOME
During the years between 1967 and 1994 the trimestral abundance of the yellowfin tuna fish (Thunnus albacares), expressed as the number of individuals per group age and cohort, for the Eastern Pacific Ocean (EPO), was used to ca...
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SERGIO GUZMÁN RUÍZ,WALTER RITTER ORTÍZ,AGUSTÍN MUHLIA VELÁZQUEZ
In this study, an agroclimatic classification is made based on the calculation of the solar radiation potentials, taking into consideration the altitude, the orientation and the tilt of the mountains. A clear (cloudless) atmosphere with a visibility ...
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WALTER RITTER ORTÍZ,SERGIO GUZMÁN RUÍZ,R. SALVATIERRA FIERRO
The climatological dat from Tlaxcala state has been used to apply metodologies for soya growing in this state. index related to comfort values for better growing have been claculated, zones with an optimum development and phenological considerations have...
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