- Industria: 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.
Outcome of hazard identification and risk estimation applied to a specific use of a substance or occurrence of an environmental health hazard.
Note: Risk characterization requires quantitative data on the exposure of organisms or people at risk in the specific situation. The end product is a quantitative statement about the proportion of organisms or people affected in a target population.
Industry:Biology; Chemistry
Oxidation reactions induced by light. Common processes are:
# Loss of one or more electrons from a chemical species as a result of photoexcitation of that species;
# Reaction of a substance with oxygen under the influence of ultraviolet, visible, or infrared light. When oxygen remains in the product this latter process is also called photooxygenation. Reactions in which neither the substrate nor the oxygen are electronically excited (i.e., photosensitized oxidations) are sometimes called photoinitiated oxidations.
Industry:Biology; Chemistry
Parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used.
Note: The parameter may be, for example, a standard deviation or the half-width of an interval, having a stated coverage probability.
# In assay methodology, confidence interval or fiducial limit used to assess the probable.
# In toxicology, value used in extrapolation from experimental animals to man (assuming that man may be more sensitive) or from selected individuals to the general population. For example, a value applied to the no-observed-effect-level (NOEL) or no-observed-adverse-effect-level (NOAEL) to derive an acceptable daily intake (ADI) or tolerable daily intake (TDI).
Industry:Biology; Chemistry
Particle in air of aerodynamic diameter less than 100 nm.
Note: As a group, ultrafine particles are referred to as PM0.1 (100 nm is 0.1 μm).
Industry:Biology; Chemistry
Percentage of positive results that are true positives or of negative results that are true negatives.
Industry:Biology; Chemistry
Person selected with the use of defined criteria for comparative purposes in a clinical study.
Industry:Biology; Chemistry
Persons who can and may develop an adverse health effect and who are potentially exposed to a substance under study. People already having chronic disease are excluded from the population at risk in studies of the incidence of the adverse effect.
Industry:Biology; Chemistry
Pertaining to or arising from chance and hence obeying the laws of probability.
Industry:Biology; Chemistry
