Natural units — In physics, natural units are physical units of measurement based only on universal physical constants. For example the elementary charge e is a natural unit of electric charge, or the speed of light c is a natural unit of speed. A purely natural … Wikipedia
Non-equilibrium thermodynamics — Thermodynamics … Wikipedia
Natural product — Paclitaxel (Taxol) is a natural product derived from the Yew tree.[1] A natural product is a chemical compound or substance produced by a living organism found in nature that usually has a pharmacological or biological activity for use in… … Wikipedia
Ethical non-naturalism — is the meta ethical view which claims that: Ethical sentences express propositions. Some such propositions are true. Those propositions are made true by objective features of the world, independent of human opinion. These moral features of the… … Wikipedia
Natural number — Natural numbers can be used for counting (one apple, two apples, three apples, ...) from top to bottom. In mathematics, the natural numbers are the ordinary whole numbers used for counting ( there are 6 coins on the table ) and ordering ( this is … Wikipedia
Non-metallic inclusions — are chemical compounds and nonmetals that are present in steel and alloys. They are the product of chemical reactions, physical effects, and contamination that occurs during the melting and pouring process. These inclusions are categorized by… … Wikipedia
Non-conventional oil — is oil produced or extracted using techniques other than the traditional oil well method. Currently, non conventional oil production is less efficient and some types have a larger environmental impact relative to conventional oil production. Non… … Wikipedia
Natural burial — is a process by which the body of a deceased person is interred in the soil in a manner that does not inhibit decomposition and allows the body to recycle naturally. It is seen as an alternative to contemporary Western burial methods. Contents 1… … Wikipedia
Natural oil polyols — Natural oil polyols, also known as NOPs or biopolyols, are polyols derived from vegetable oils by several different techniques. The primary use for these materials is in the production of polyurethanes. Most NOPs qualify as Biobased Products, as… … Wikipedia
Natural Killer T cell — Natural killer T (NKT) cells are a heterogeneous group of T cells that share properties of both T cells and natural killer (NK) cells. Many of these cells recognize the non polymorphic CD1d molecule, an antigen presenting molecule that binds self … Wikipedia
