- 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.
Pharmacological or toxicological interaction in which the combined biological effect of exposure to two or more substances is greater than expected on the basis of the simple summation of the effects of each of the individual substances.
Industry:Biology; Chemistry
Pharmacological study of the choice of appropriate dose of a drug in relation to the physiological factors, such as age, that may influence its effect.
Industry:Biology; Chemistry
Highest allowable regulatory airborne concentration.
Note: This exposure concentration is not expected to injure workers. It may be expressed as a ceiling limit or as a time-weighted average (TWA).
Industry:Biology; Chemistry
Highest exposure that is reasonably expected to occur.
Note: Typically the 95% upper confidence limit of the toxicant distribution is used: if only a few data points (6-10) are available, the maximum detected concentration is used.
Industry:Biology; Chemistry
Human exposure over a lifetime to a carcinogen which has been estimated, using mathematical modeling, to result in a very low incidence of cancer, somewhere between zero and a specified incidence, e.g. one cancer in a million exposed people.
Industry:Biology; Chemistry
Human exposure threshold value for a group of chemicals below which there should be no appreciable risk to human health.
Industry:Biology; Chemistry
Hyperkeratotic disease in cattle following exposure to chlorinated dibenzo-p-dioxins, naphthalenes and related compounds.
Industry:Biology; Chemistry
Identification and quantification of the risk resulting from a specific use or occurrence of a chemical or physical agent, taking into account possible harmful effects on individuals or populations exposed to the agent in the amount and manner proposed and all the possible routes of exposure.
Note: Quantification ideally requires the establishment of dose-effect and dose-response relationships in likely target individuals and populations.
Industry:Biology; Chemistry
Immune response whereby individuals become hypersensitive to substances, pollen, dandruff, or other agents that make them develop a potentially harmful allergy when they are subsequently exposed to the sensitizing material (allergen).
Industry:Biology; Chemistry
