Fluid catalytic cracking — (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high boiling hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases and other products.cite book|author … Wikipedia
Cement kiln — Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of… … Wikipedia
Lime kiln — A lime kiln is a kiln used to produce quicklime by the calcination of limestone (calcium carbonate). The chemical equation for this reaction is::CaCO3 + heat → CaO + CO2This reaction takes place at 900°C (at which temperature the partial pressure … Wikipedia
Agriculture and Food Supplies — ▪ 2007 Introduction Bird flu reached Europe and Africa, and concerns over BSE continued to disrupt trade in beef. An international vault for seeds was under construction on an Arctic island. Stocks of important food fish species were reported… … Universalium
chemoreception — chemoreceptive /kee moh ri sep tiv, kem oh /, adj. /kee moh ri sep sheuhn, kem oh /, n. the physiological response to chemical stimuli. [1915 20; CHEMO + RECEPTION] * * * Sensory process by which organisms respond to external chemical stimuli, by … Universalium
Puget Sound environmental issues — articleissues POV = December 2007 copyedit = January 2007 citationstyle = October 2008The environmental health of Puget Sound, Washington has a diverse and complex history related to a long, involved relationship with marine and freshwater… … Wikipedia
Forward osmosis — is an osmotic process that, like reverse osmosis, uses a semi permeable membrane to effect separation of water from dissolved solutes. The driving force for this separation is an osmotic pressure gradient, such that a draw solution of high… … Wikipedia
Google Chrome — This article is about the web browser. For the operating system, see Google Chrome OS. Google Chrome … Wikipedia
ECONOMIC AFFAIRS — THE PRE MANDATE (LATE OTTOMAN) PERIOD Geography and Borders In September 1923 a new political entity was formally recognized by the international community. Palestine, or Ereẓ Israel as Jews have continued to refer to it for 2,000 years,… … Encyclopedia of Judaism
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
