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31Technological and industrial history of Canada — The technological and industrial history of Canada encompasses the country s development in the areas of transportation, communication, energy, materials, public works, public services (health care), domestic/consumer and defense technologies.… …
32Economy of Afghanistan — Infobox Economy country = Afghanistan currency = Afghani (AFN) year = 21 March 20 March organs = SAARC, ECO, negotiating WTO accession rank = 91st gdp = $31.9 billion (2006) growth = 14% (2005) per capita = $1,490 (2007) sectors = agriculture:… …
33Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …
34Afghanistan — /af gan euh stan /, n. a republic in central Asia, NW of India and E of Iran. 23,738,085; 250,000 sq. mi. (647,500 sq. km). Cap.: Kabul. * * * Afghanistan Introduction Afghanistan Background: Afghanistan s recent history is characterized by war… …
35Nablus — This article is about the city of Nablus in the northern West Bank, and its predecessor, the Roman city of Flavia Neapolis. For the biblical city of Shechem, at approximately the same location, see Shechem. Nablus Other transcription(s)… …
36Saponification — of a triglyceride with sodium hydroxide. Saponification is a process that produces soap, usually from fats and lye. In technical terms, saponification involves base (usually caustic soda NaOH) hydrolysis of triglycerides, which are esters of… …
37nickel processing — Introduction preparation of the metal for use in various products. Although it is best known for its use in coinage, nickel (Ni) has become much more important for its many industrial applications, which owe their importance to a… …
38Patina — For the village in Estonia, see Pattina. For the United States Navy ship, see USS Pattina (SP 675). A bronze coin of the Han Dynasty circa 1st century BC with green patina. Patina ( …
39CRAFTS — In the Bible Genesis 4:2, 17, 20–22 describes Cain and four of his descendants as the first to engage in crafts. Cain worked the land, Enoch engaged in building, Jubal, in music, Jabal (like Abel) was a shepherd, and Tubal Cain worked with metals …
40Hard water — is the type of water that has high mineral content (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and… …
