There are active and passive (in-active) constituents in all plants. An active principle is the most active constituent.
The amount of active constituent of a plant is not constant. The percentage of active constituent varies greatly. For this reason official pharmacy standardises drugs. See: WHOLE PLANT.
A general rule that can be used as a guide, for example, to develop and implement policies, to set up a managerial process or to organize primary health care in communities.... guiding principle
adj. the ethical distinction between actively doing something to a patient and simply allowing it to happen or failing to act (the acts and omissions doctrine). For instance, doctors should act to save life if possible, but when death is inevitable it is permissible to let it happen, although the prohibition against killing would not allow active intervention. See also dying.... active/passive
(in biochemistry) an energy-dependent process in which certain substances (including ions, some drugs, and amino acids) are able to cross cell membranes against a concentration gradient. The process is inhibited by substances that interfere with cellular metabolism (e.g. high doses of digitalis).... active transport
an approach to medical ethics, proposed by Tom Beauchamp and James F. Childress, that identifies four basic tenets of ethical practice, namely: respect for *autonomy, *beneficence, *nonmaleficence, and *justice. Although the four principles are often used as a framework for decision-making in Western medical ethics, there may be problems when principles conflict or their application is contested in practice.... four principles
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