reductions
41NP-complete — Euler diagram for P, NP, NP complete, and NP hard set of problems In computational complexity theory, the complexity class NP complete (abbreviated NP C or NPC) is a class of decision problems. A decision problem L is NP complete if it is in the… …
42Organic redox reaction — Organic redox reactions: The Birch reduction Organic reductions or organic oxidations or organic redox reactions are redox reactions that take place with organic compounds. In organic chemistry oxidations and reductions are different from… …
43Black carbon — or BC is formed through the incomplete combustion of fossil fuels, biofuel, and biomass, and is emitted in both anthropogenic and naturally occurring soot. Black carbon warms the planet by absorbing heat in the atmosphere and by reducing albedo,… …
44Emissions trading — (or emission trading) is an administrative approach used to control pollution by providing economic incentives for achieving reductions in the emissions of pollutants. It is sometimes called cap and trade.A central authority (usually a government …
45Carbon credit — This article deals with carbon credits for international trading. For carbon credits for individuals, see personal carbon trading. For voluntary schemes, see carbon offset. Part of a series on …
46Phonological history of English consonants — The phonological history of English consonants is part of the phonological history of the English language in terms of changes in the phonology of consonants. Contents 1 Consonant clusters 1.1 H cluster reductions 1.2 Y cluster reductions …
47Desulfonylation reactions — are chemical reactions leading to the removal of a sulfonyl group from organic compounds. As the sulfonyl functional group is electron withdrawing, methods for cleaving the sulfur carbon bonds of sulfones are typically reductive in nature.… …
48Many-one reduction — In computability theory and computational complexity theory, a many one reduction is a reduction which converts instances of one decision problem into instances of a second decision problem. Reductions are thus used to measure the relative… …
49European Union Emission Trading Scheme — The European Union Emissions Trading Scheme (EU ETS) also known as the European Union Emissions Trading System, was the first large emissions trading scheme in the world.[1] It was launched in 2005 to combat climate change and is a major pillar… …
50Histoire Du Paraguay — Le Paraguay est un État d Amérique du Sud, indépendant depuis le 14 mai 1811. Il était auparavant une colonie espagnole. Sommaire 1 Histoire précolombienne 2 Colonisation 3 …
