PET scans of areas of their brains activated by thirst showed reactions -- particularly in the cingulate cortex. In the elderly, drinking a much smaller volume of water is needed to cause that area of brain activation to subside, said Egan, who is an expert on neuro-imaging.
What is Nutrient Density? It is a measure of the nutrients provided per calorie of food, or the ratio of nutrients to calories (energy). Foods that supply generous amounts of one or more nutrients compared to the number of calories they supply are called nutrient dense.
Relative density is defined as the state of compactness of a soil with respect. to the loosest and densest states at which it can be placed by the laboratory. procedures described in this method. It is expressed as the ratio of: (1) the difference between the void ratio of a cohesionless soil in the loosest.