| baseload demand | The minimum demand experienced by an electric utility, usually 30-40% of the utility's peak demand. (05 Dec 1998) |
|---|---|
| biochemical oxygen demand | The amount of oxygen aerobicorganisms need to carry out oxidative metabolism in watercontaining organic matter, such as sewage. (09 Oct 1997) |
| chemical oxygen demand | The amount of dissolved oxygen required to combine with chemicals in wastewater. A measure of the oxygen equivalent of that portion of organic matter that is susceptible to oxidation by a strong chemical oxidizing agent. (05 Dec 1998) |
| health services needs and demand | Health services required by a population or community as well as the health services that the population or community is able and willing to pay for. It includes the identification and assessment of the needs as measured by objective criteria and standards. (12 Dec 1998) |
| demand | A quantity of a substance, commodity, or service wanted or required. (05 Mar 2000) |
| demand pacemaker | A form of artificial pacemaker usually implanted into cardiac tissue because its output of electrical stimuli can be inhibited by endogenous cardiac electrical activity. (05 Mar 2000) |
| demand pulse generator | A generator which suppresses its output in response to natural ventricular activity but which, in the absence of such activity, functions as an asynchronous pulse generator. Synonym: demand pulse generator, standby pulse generator. (05 Mar 2000) |
| anaemic anoxia | A term formerly considered synonymous with anaemic hypoxia, but now reserved for extremely severe cases in which oxygen is almost completely lacking. (05 Mar 2000) |
| anoxia | <physiology> A total lack of oxygen, often used interchangeably with hypoxia to mean a reduced supply of oxygen to the tissues. (18 Nov 1997) |
| anoxia neonatorum | Any anoxia observed in newborn infants. (05 Mar 2000) |
| anoxic anoxia | A term formerly considered synonymous with hypoxic hypoxia, but now reserved for extremely severe cases in which oxygen is almost completely lacking. (05 Mar 2000) |
| cerebral anoxia | A reduced supply of oxygen to the brain. (12 Dec 1998) |
| histotoxic anoxia | Poisoning of the respiratory enzyme systems of the tissues, as in the inhibition of cytochrome oxidase by cyanides; owing to the inability of tissue cells to utilise oxygen, its tension in arterial and capillary blood is usually greater than normal. (05 Mar 2000) |
| stagnant anoxia | Stagnant hypoxia severe enough to result in the absence of oxygen in tissues. (05 Mar 2000) |
| diffusion anoxia | Diffusion hypoxia severe enough to result in the absence of oxygen in alveolar gas. (05 Mar 2000) |