no-observed effect level

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• No observable effect level — NOEL oder NOEC (No Observed Effect Level oder Concentration) ist ein toxikologischer Endpunkt in der Toxizitätsbestimmung. Der NOEL entspricht der höchsten Dosis oder Expositionskonzentration eines Stoffes in subchronischen oder chronischen… …   Deutsch Wikipedia

• lowest observed adverse effect level — (LOAEL), lowest observed effect level (LOEL) in studies of the toxicity of chemicals, the lowest dosage level at which chronic exposure to the substance shows adverse effects; usually calculated for laboratory animals …   Medical dictionary

• no observed adverse effect level — (NOAEL), no observed effect level (NOEL) in studies of the toxicity of chemicals, the highest dosage level at which chronic exposure to the substance shows no adverse effects; usually calculated for laboratory animals …   Medical dictionary

• No observable adverse effect level — The no observable adverse effect level (NOAEL) denotes the level of exposure of an organism, found by experiment or observation, at which there is no biologically or statistically significant (e.g. alteration of morphology, functional capacity,… …   Wikipedia

• No observable adverse effect level (NOAEL) — NOAEL (No observable adverse effect level) denotes the level of exposure of an organism, found by experiment or observation, at which there is no biologically or statistically significant (e.g. alteration of morphology, functional capacity,… …   Wikipedia

• no-observed-adverse-effect level — abbr. NOAEL The highest exposure level at which there are no biologically significant increases in frequency or severity of adverse effects between the exposed population and its appropriate control group; some effects may be produced at this… …   Petroleum refining glossary

• lowest-observed-adverse-effect level — abbr. LOAEL The lowest exposure level at which there are statistically or biologically significant increases in frequency or severity of adverse effects between the exposed population and its appropriate control group (US EPA 2002) …   Petroleum refining glossary

• Effect size — In statistics, an effect size is a measure of the strength of the relationship between two variables in a statistical population, or a sample based estimate of that quantity. An effect size calculated from data is a descriptive statistic that… …   Wikipedia

• Level 42 — Infobox musical artist 2 Name = Level 42 Img capt = Level 42 in 1988: The Late Alan Murphy (Guitar), Mike Lindup (Keyboards/Vocals), Mark King (Bass/Vocals), Gary Husband (Drums). Background = group or band Origin = Isle of Wight, England… …   Wikipedia

• Level of measurement — The levels of measurement , or scales of measure are expressions that typically refer to the theory of scale types developed by the psychologist Stanley Smith Stevens. Stevens proposed his theory in a 1946 Science article titled On the theory of… …   Wikipedia

• Level of detail — In computer graphics, accounting for level of detail involves decreasing the complexity of a 3D object representation as it moves away from the viewer or according other metrics such as object importance, eye space speed or position. Level of… …   Wikipedia