No-Observed-Effect-Level (NOEL)
Exposure level at which there are no statistically or biological significant differences in the frequency or severity of any effect in the exposed or control populations.
Noble Metal ...
No-Observed-Effect-Level (NOEL): A term used in risk assessment. An exposure level at which there are no statistically or biologically significant difference or severity of ant effect between an exposed population and a comparable non-exposed ...
For example, a value applied to the no-observed-effect-level (NOEL) or no-observed-adverse-effect-level (NOAEL) to derive an acceptable daily intake (ADI) or tolerable daily intake (TDI).
No-Observed-Effect-Level (NOEL)
Notice of Deficiency
Notice of Intent to Cancel
Notice of Intent to Deny
Notice of Intent to Suspend
Nuclear Reactors and Support Facilities
Nuclear Winter
Nuclide
Nutrient
Nutrient Pollution ...
 See also: Air, Table, Emission, Asbestos, Hazard
  
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