hot-air treatment
51Nicotiana tabacum — Common tobacco Scientific classification Kingdom: Plantae …
52Soldering — For the song, see Soldering (song). For the product, see Solder. Desoldering a contact from a wire. Soldering is a process in which two or more metal items are joined together by melting and flowing a filler metal (solder) into the joint, the… …
53Autoclave — For other uses, see Autoclave (disambiguation). Square Section Autoclave A modern front loading autoclave Uses Sterilization Inventor Charles Chamberland Manufacturer Astell Scientific …
54Michael Crichton — at Harvard University (April 18, 2002) Born John Michael Crichton October 23, 1942(1942 10 23) Chicago, Illinois, U.S …
55Calendar of 1998 — ▪ 1999 January January 1 At the stroke of the new year, the Russian ruble is worth a thousand times less than before as three zeros are removed from its value; about six new rubles equal one U.S. dollar. Foreign Minister David Levy… …
56Pulp (paper) — Fibres in wood pulp Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibres from wood, fibre crops or waste paper. Wood pulp is the most common raw material in papermaking. Contents …
57Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
58Cornwall, Ontario — Cornwall   City   Pitt Street, downtown Cornwall …
59Pyrometallurgy — is a branch of extractive metallurgy. It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals.… …
60Rolls-Royce Merlin — Merlin The Rolls Royce Merlin …
