Side effects vs Adverse effects. Side effects and adverse effects are both experienced by people in the healthcare field. Often the words are interchanged or used instead of the other, but wrongly so. There is ample difference in the meaning of both words.
Also found in: Wikipedia. system unit. An individual card, section of tape, or the like, which is manipulated during operation of the system; class 1 systems have one unit per document; class 2 systems have one unit per vocabulary term or concept. case.
In the power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity.Calculations are simplified because quantities expressed as per-unit do not change when they are referred from one side of a transformer to the other.This can be a pronounced advantage in power system analysis where large numbers of transformers may be encountered. Use of the constant is reduced in three-phase calculations. 2  Per-unit quantities are the same on either side of a transformer, independent of voltage level. 3  By normalizing quantities to a common base, both hand and automatic calculations are simplified.