- 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.
Autonomous self-replicating extra-chromosomal circular DNA molecule present in bacteria and yeast.
Note 1: Plasmids replicate autonomously each time a bacterium divides and are transmitted to the daughter cells.
Note 2: DNA segments are commonly cloned using plasmid vectors.
Industry:Biology; Chemistry
Noncommittal term used instead of adsorption or absorption when it is difficult to discriminate experimentally between these two processes.
Industry:Biology; Chemistry
Nonprotein entity essential for an enzyme’s activity and tightly bound to the enzyme molecule in its active form.
Industry:Biology; Chemistry
Note: The higher this value above one, the greater the risk. If the value is below one, there should be no risk as a result of the predicted exposure.
Industry:Biology; Chemistry
Number of instances of existing cases of a given disease or other condition in a given population at a designated time; sometimes used to mean prevalence rate.
Note: When used without qualification, refers usually to the situation at a specified time (point prevalence).
Industry:Biology; Chemistry
Numerical constant in a rate-of-reaction (v) equation; for example, v = k (A)a(B)b.......where (A), (B) etc. are reactant concentrations, k is the rate constant, and a, b, etc. are corresponding empirical constants.
Note: For further consideration of the relevant mathematics.
Industry:Biology; Chemistry
Numerical constant in a rate-of-reaction (v) equation; for example, v = k (A)a(B)b.......where (A), (B) etc. are reactant concentrations, k is the rate constant, and a, b, etc. are corresponding empirical constants.
Note: For further consideration of the relevant mathematics.
Industry:Biology; Chemistry
Numerically specified low risk of exposure to a potentially toxic substance (for example, 1 in 1000) or socially acceptable low risk of adverse effects from such an exposure applied to decision making in regard to chemical safety.
Industry:Biology; Chemistry
Objective evidence of a disease, deformity or an effect induced by an agent, perceptible to an examining physician.
Industry:Biology; Chemistry
Observable structural and functional characteristics of an organism determined by its genotype and modulated by its environment.
Industry:Biology; Chemistry
