acceptable emission limit
71chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
72Intermittent energy source — An intermittent energy source is any source of energy that is not continuously available due to some factor outside direct control. The intermittent source may be quite predictable, for example, tidal power, but cannot be dispatched to meet the… …
73Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …
74Pollution — For the Fransisco Battiato album, see Pollution (album). For the Goodies episode, see Pollution (The Goodies). Air pollution from World War II weapon production in Alabama, 1942 …
75Uranus — This article is about the planet. For other uses, see Uranus (disambiguation). Uranus   …
76Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …
77Nuclear energy in the European Union — Infobox Geopolitical organisation native name = European Union Countries with Nuclear Energy The nuclear energy in the European Union accounts approximately 15% of total energy consumption. The energy policies of the European Union (EU) member… …
78Mort de Michael Jackson — Le 25 juin 2009, le chanteur américain Michael Jackson meurt d’une intoxication aiguë au propofol après avoir subi un arrêt cardiaque dans le voisinage de Holmby Hills à Los Angeles en Californie. Son médecin personnel, Conrad Murray, dit avoir… …
79Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… …
80truck — truck1 truckable, adj. /truk/, n. 1. any of various forms of vehicle for carrying goods and materials, usually consisting of a single self propelled unit but also often composed of a trailer vehicle hauled by a tractor unit. 2. any of various… …
