- 行业: 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.
Area of diminished or lost vision within the visual field, surrounded by an area of less affected or normal vision.
Industry:Biology; Chemistry
As defined by ACGIH, concentration of a potentially toxic substance that should not be exceeded during any part of the working exposure.
Industry:Biology; Chemistry
As defined by ACGIH, concentration to which it is believed that workers can be exposed continuously for a short period of time without suffering from 1) irritation, 2) chronic or irreversible tissue damage, or 3) narcosis of sufficient degree to increase the likelihood of accidental injury, impair self rescue or materially reduce work efficiency, and provided that the daily TLV-TWA is not exceeded.
Note: It is not a separate independent exposure guideline; rather, it supplements the TLV-TWA limit where there are recognized acute effects from a substance whose toxic effects are primarily of a chronic nature. TLV-STELs are recommended only where toxic effects have been reported from high short-term exposures in either humans or animals.
Industry:Biology; Chemistry
As defined by ACGIH, time-weighted average concentration for a conventional 8-hour workday and a 40-hour workweek, to which it is believed nearly all workers may be repeatedly exposed, day after day, without adverse effect.
Industry:Biology; Chemistry
Assemblage of individuals with defined characteristics.
Industry:Biology; Chemistry
Assessment, with or without mathematical modeling, of the probability and nature of effects of exposure to a substance based on quantification of dose-effect and dose-response relationships for that substance and the population(s) and environmental components likely to be exposed and on assessment of the levels of potential exposure of people, organisms and environment at risk.
Industry:Biology; Chemistry
Association between specific aspects of molecular structure and defined biological action.
Industry:Biology; Chemistry
Association between the physicochemical and (or) the structural properties of a substance and its metabolic behavior.
Industry:Biology; Chemistry
Attribute that is associated with an increased probability of occurrence of a disease or other specified outcome and that can be used as an indicator of this increased risk.
Note: A risk marker is not necessarily a causal factor.
Industry:Biology; Chemistry
Attribute that is associated with an increased probability of occurrence of a disease or other specified outcome and that can be used as an indicator of this increased risk.
Note: A risk marker is not necessarily a causal factor.
Industry:Biology; Chemistry
