Now showing items 5-6 of 6

    • Niveles de radioactividad en tres regiones de Costa Rica 

      Mora Rodríguez, Patricia (2011-02-15)
      The establishment of the first radioactivity levels of natural radiation was carried out during the period 1991 to 1994 in three different regions of Costa Rica. The radionuclides studied belong to different soil types ...
    • Punto fijo una teoría interdisciplinaria 

      Azofeifa Z., Carlos E. (2011-02-15)
      We show a survey of the theory of the fixed point by commenting the most important theorems and their applications in the mathematical fields as well as in other disciplines: economy, theory of games and optimization. We ...