- 産業: Library & information science
- Number of terms: 152252
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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.
Amount concentration or mass concentration of a substance that should not be exceeded in an environmental system, often expressed as a time-weighted average measurement over a defined period.
Industry:Biology; Chemistry
Amount concentration or mass concentration of a substance that should not be exceeded in an environmental system, often expressed as a time-weighted average measurement over a defined period.
Industry:Biology; Chemistry
Amount of a substance or physical agent (e.g. radiation) that causes death when taken into the body.
Industry:Biology; Chemistry
Amount of a substance or physical agent (radiation) absorbed by an organ.
Industry:Biology; Chemistry
Amount of a substance that has no effect on the organism.
Note: It is lower than the threshold of harmful effect and is estimated while establishing the threshold of harmful effect.
Industry:Biology; Chemistry
Amount of a substance that has no effect on the organism.
Note: It is lower than the threshold of harmful effect and is estimated while establishing the threshold of harmful effect.
Industry:Biology; Chemistry
Amount of a substance that is taken into the body, regardless of whether or not it is absorbed: the total daily intake is the sum of the daily intake by an individual from food, drinking-water, and inhaled air.
Industry:Biology; Chemistry
Amount of substance and (or) its metabolites that is excreted divided by time of excretion.
Industry:Biology; Chemistry
Amount of substance extracted from a source divided by the total contained within the source.
Industry:Biology; Chemistry
Animal cell that interacts with a foreign substance or organism, or one which it identifies as foreign, and initiates an immune response against the substance or organism.
Note: There are two main groups of lymphocytes, B lymphocytes and T lymphocytes.
Industry:Biology; Chemistry
