To give blood you must: 1  Be in general good health.  Be at least 17 years old. (If you are 16 you can donate with a CBC consent form signed by your parent). There is no upper age limit as long as you have no health restrictions.
Specific radiative intensity. Specific (radiative) intensity is a quantity used in physics that describes electromagnetic radiation. It is a term used in much of the older scientific literature. The present-day SI term is spectral radiance, which can be expressed in base SI units as W mâ2 srâ1 Hzâ1.
Energy intensity is defined as the ratio of energy consumption to some measure of demand for energy services. The choice of a measure of demand for energy services (a demand indicator) in efficiency analysis is critical.nother example of the use of this approach is in Energy Efficiency Trends in Canada 1990 to 1996 published by Natural Resources Canada, Office of Energy Efficiency. Divisia Index Approach. The Divisia index approach may be used to decompose time trends into the different factors such as structural and intensity.