This higher density has the effect that at subduction zones the oceanic lithosphere invariably sinks underneath the overriding lithosphere, which can be oceanic or continental. New oceanic lithosphere is constantly being produced at mid-ocean ridges and is recycled back to the mantle at subduction zones.
poor. adj. poorÂ·er, poorÂ·est. 1. a. Having insufficient wealth to meet the necessities or comforts of life or to live in a manner considered acceptable in a society. b. Relating to or characterized by poverty: the poor side of town. 2. Deficient or lacking in a specified resource or quality: an area poor in timber and coal; a diet poor in calcium. 3. Not adequate in quality or quantity; inferior: a poor performance; poor wages.
The Sigma Quality Level feature is a simple statistic that puts a given defect rate on a âsix-sigmaâ scale. For example, on a scale of one million opportunities, 3.397 defects result in a six-sigma process. The computation that gives the Sigma Quality Level statistic is. Sigma Quality Level = NormalQuantile(1 â defects/opportunities) + 1.5.