Experiment was conducted to study the effect of gamma irradiation, growth retardants and coatings (coconut oil, mustard oil and liquid paraffi n) on shelf life of winter guava fruits during storage. The results revealed that the superiority of coconut oil coating over other post harvest treatments. Physiological loss in weight (7.1%), marketable fruits retained over control (86.7%), total soluble solid (16.1%), ascorbic acid (195 mg/100 g pulp) and total sugar (10%) of fruit were positively infl uenced by coconut oil coating up to 12 days of storage. The treatment was found signifi cantly effective in increasing the post harvest life of fruits for 12 days over control without adversely affecting the fruit quality. Coconut oil coating gave highest consumer acceptability while, maintaining suffi cient level of total soluble solids and sugar content in fruits.
Functionally graded materials are materials with tailored properties in one or more directions. This paper analyzes functionally graded cylinders with variation of properties according to various gradation laws available in literature of functionally graded materials. These gradation laws determine response of material under different loading and boundary conditions. The whole analysis is carried out in ABAQUS. USDFLD subroutine has been used for varying the material properties at elemental level. FGM cylinder under analysis has been loaded with coupled thermo-mechanical load where one surface of the plate is loaded with mechanical force and a temperature gradient is provided over the thickness of the cylinder. Another surface is free from any kind of mechanical forces. On application of force and thermal gradient maximum stresses generated and the maximum nodal temperature observed in the cylinder is compared with the failure limits considering factor of safety for the working conditions.On the basis of maximum stress observed and the corresponding nodal temperature using different gradation laws the application of these laws are justified.
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