- Industry: Library & information science
- Number of terms: 152252
- Number of blossaries: 0
- Company Profile:
The National Library of Medicine (NLM), on the campus of the National Institutes of Health in Bethesda, Maryland, is the world's largest medical library. The Library collects materials and provides information and research services in all areas of biomedicine and health care.
Mass fraction of dust (particles) that penetrates to the unciliated airways of the lung (the alveolar region).
Note: This fraction is represented by a cumulative log-normal curve having a median aerodynamic diameter of 4 μm, standard deviation 2 μm (values for humans).
Industry:Biology; Chemistry
Material causing injury to living organisms as a result of physicochemical interactions.
Industry:Biology; Chemistry
Material, sufficiently homogeneous and stable regarding one or more properties, used in calibration, in assignment of a value to another material, or in quality assurance.
Industry:Biology; Chemistry
Mathematical modeling of kinetic behavior of a substance, based on measured physiological parameters.
Industry:Biology; Chemistry
Mathematical modeling of kinetic behavior of a substance, based on measured physiological parameters.
Industry:Biology; Chemistry
Maximum dose or concentration that on current understanding is likely to be tolerated by an exposed organism without producing any harm.
Industry:Biology; Chemistry
Means by which a toxic agent gains access to an organism by administration through the gastrointestinal tract (ingestion), lungs (inhalation), skin (topical), or by other routes such as intravenous, subcutaneous, intramuscular or intraperitoneal routes.
Industry:Biology; Chemistry
Measure of the frequency with which an event occurs in a defined population in a specified period of time.
Note 1: Most such rates are ratios, calculated by dividing a numerator, e.g. the number of deaths, or newly occurring cases of a disease in a given period, by a denominator, e.g. the average population during that period.
Note 2: Some rates are proportions, i.e. the numerator is contained within the denominator (as when a number of patients with a given disease is divided by the total population from which they come).
Industry:Biology; Chemistry
Measure that can be used in comparison of adverse reactions to drugs, or other exposures, based solely on the component of risk due to the exposure or drug under investigation, removing the risk due to background exposure experienced by all in the population. The relative excess risk, R, is given by
R = (R1-R0) / (R2-R0)
where R1is the rate in the population, R2 is the rate in the comparison population, and R0is the rate in the general population.
Note: Rate is used here as in epidemiology.
Industry:Biology; Chemistry
Measurement precision under repeatability conditions of measurement.
Industry:Biology; Chemistry
