- Industry: 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.
In the context of European Community Council Directive 79/831/EEC, the Sixth Amendment to the European Community Council Directive 67/548/EEC relating to the Classification, Packaging and Labeling of Dangerous Substances, official government organization or group receiving and evaluating notifications of new substances.
Industry:Biology; Chemistry
Obsolete term for cytochrome P-450 I, A1, and A2, one of the major families of the cytochromes P-450 hemoproteins.
Note: During the mono-oxygenation of certain substances, often a detoxification process, these iso-enzymes may produce intermediates which can initiate mutations, cancer, immunotoxic reactions and adverse effects.
Industry:Biology; Chemistry
Sequence of responsibility for a substance from the manufacturer to the distributor, to the user, or to the person(s) ultimately responsible for waste disposal. This term is also used in controlled transmission of samples from collection to analysis, especially of samples of materials used for medico-legal or forensic purposes.
Industry:Biology; Chemistry
Mathematical process leading to a model of transport of a substance in terms of compartments and rate constants, usually taking the form C = Ae-αt + Be - βt… where each exponential term represents one compartment. C is the substance concentration; A, B, … are proportionality constants; α, β, … are rate constants; and t is time.
Industry:Biology; Chemistry
1. Liver disease defined by histological examination and characterized by increased fibrous tissue, abnormal morphological and physiological changes such as loss of functional liver cells, and increased resistance to blood flow through the liver (portal hypertension).
2. Chronic interstitial inflammation and fibrosis of an organ.
Industry:Biology; Chemistry
Serious illness which is a consequence of consumption of bivalve shellfish (mollusks) such as mussels, oysters and clams that have ingested, by filter feeding, large quantities of micro-algae containing domoic acid; acute symptoms include vomiting, diarrhea, and in some cases, confusion, loss of memory, disorientation and even coma.
Industry:Biology; Chemistry
Regular and systematic pattern of growth such that the mass or size of any organ or part of a body can be expressed in relation to the total mass or size of the entire organism according to the allometric equation:
Y = bχ<sup>α</sup> where
Y = mass of the organ, χ = mass of the organism, α = growth coefficient of the organ, and b = a constant.
Industry:Biology; Chemistry
1. Minor impurity present in a substance.
2. Extraneous material inadvertently added to a sample prior to or during chemical or biological analysis
3. In some contexts, as in relation to gas cleaning equipment, used as a synonym for “pollutant”, especially on a small scale.
4. Unintended component in food that may pose a hazard to the consumer.
Industry:Biology; Chemistry
Abnormal respiratory sounds heard on auscultation of the chest, produced by passage of air through passages which contain secretion or exudate or which are constricted by spasm or a thickening of their walls; also referred to as rhonchi.
Note: Auscultation is the process of listening for sounds within the body by ear unassisted or using a stethoscope. To listen to a patient's rhonchi, use this link: http://www.practicalclinicalskills.com/auscultation-lesson-description.aspx?coursecaseorder=5&courseid=201
Industry:Biology; Chemistry
1. Any one of a group of three quantities characterizing the composition of a mixture and defined as one of mass, amount of substance (chemical amount) or number divided by volume, giving, respectively, mass, amount (of substance) or number concentration.
2. Short form for amount (of substance) concentration (substance concentration in clinical chemistry).
Industry:Biology; Chemistry
