Supplements vs. whole foods. Supplements aren't intended to be a food substitute because they can't replicate all of the nutrients and benefits of whole foods, such as fruits and vegetables. So depending on your situation and your eating habits, dietary supplements may not be worth the expense. An orange, for example, provides vitamin C plus some beta carotene, calcium and other nutrients. 2  It's likely these compounds work together to produce their beneficial effect. 3  Essential fiber. 4  Whole foods, such as whole grains, fruits, vegetables and legumes, provide dietary fiber.
Density index (or relative density) is the measure of compaction of non-cohesive soils naturally com-. pacted as a result of geological processes. It also is used for compaction control of non-cohesive soils built in. hydraulic embankments.
apparent density. (metallurgy). The weight per unit volume of a metal powder, in contrast to the weight per unit volume of the individual particles.