- 行业: Library & information science
- Number of terms: 152252
- Number of blossaries: 0
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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.
Proportion of an exposed population with a defined effect or the proportion of a group of individuals that demonstrates a defined effect in a given time at a given dose rate.
Industry:Biology; Chemistry
Proportion of observed deaths from a specified condition in a defined population divided by the proportion of deaths expected from this condition in a standard population, expressed either
Industry:Biology; Chemistry
Proportion of truly non-diseased persons who are identified by the screening test.
Industry:Biology; Chemistry
Protein produced by several of the body's cell types, such as white blood cells, red blood cells, and other cells that line the blood vessels; it promotes the destruction of some types of cancer cells and is a cytokine involved in systemic inflammation.
Industry:Biology; Chemistry
Purification of the atmosphere from contaminants by natural biological and physico-chemical processes.
Industry:Biology; Chemistry
Quantitative and qualitative features of response to the action(s) of a potentially toxic substance that are characteristic for a particular species of living organism.
Industry:Biology; Chemistry
Quantitative association between the physicochemical and (or) the structural properties of a substance and its metabolic behavior.
Industry:Biology; Chemistry
Quantitative association between the three-dimensional structural properties of a substance and its biological properties.
Industry:Biology; Chemistry
Quantitative or qualitative differences of response to the action(s) of a potentially toxic substance on various species of living organisms.
Industry:Biology; Chemistry
Quantitative structure-biological activity model derived using regression analysis and containing as parameters physicochemical constants, indicator variables or theoretically calculated values.
Note: The term is extended by some authors to include chemical reactivity, i.e. activity and reactivity are regarded as synonyms. This extension is discouraged.
Industry:Biology; Chemistry
