TEMPERATURE DISTRIBUTION FINITE ELEMENT METHOD 2 MAPPING 2 ANALYTICAL SOLUTION 1 CONVECCION NATURAL 1 DISPERSION 1 DISTRIBUCION DE LA TEMPERATURA 1 DISTRIBUCION DE TEMPERATURA 1 DSPI 1 ESCALONADO DE FASE 1 Effect of temperature gradients on the diffusion of thermnal neutrons 1 MODELO A ESCALA 1 MOVING-BOUNDARY CONDITIONS 1 NATURAL CONVECTION 1 NEUTRONES TERMICOS 1 Numerical experiments on the determination of unsteady state temperature distribution in domains of complicated boundary shape 1 PHASE STEPPING 1 PRISMATIC ROD 1 SCATTERING 1 THERMAL CONDUCTIVITY 1 THERMAL NEUTRONS 1 Temperature distribution in a composite prismatic rod in the case of heat generation in the circular, cylindrical concentric core 1