compacting
61Overpressure — The term Overpressure (Δp) is applied to a pressure difference, relative to a normal or ambient pressure, in various circumstances: In engineering: the pressure difference over the wall thickness of a pressure vessel. It is the overpressure, not… …
62Fin Whale — ] As of 2006, there are two named subspecies, each with distinct physical features and vocalizations. B. p. physalus (Linnaeus 1758), or Northern Fin Whale, is found in the North Atlantic, and B. p. quoyi (Fischer 1829), or Antarctic Fin Whale,… …
63Crumple zone — A crash test illustrates how a crumple zone absorbs energy from an impact …
64Rail tracks — are used on railways (or railroads), which, together with railroad switches (or points), guide trains without the need for steering. Tracks consist of two parallel steel rails, which are laid upon sleepers (or cross ties) that are embedded in… …
65Macadam — is a type of road construction pioneered by the Scotsman John Loudon McAdam in around 1820. The method simplified what had been considered state of the art at that point.Before McAdamBefore McAdam, French road director Pierre Marie Jérôme… …
66Vegan organic gardening — and farming is the organic cultivation and production of food crops and other crops with a minimal amount of exploitation or harm to any animal. Vegan and vegan organic farmers use no animal products or by products, such as bloodmeal, fish… …
67Building material — For other kinds of building materials, see Hardware, Biology, and Star formation. Concrete and metal rebar used to build a floor Building material is any material which is used for a construction purpose. Many naturally occurring substances, such …
68Waste collection vehicle — A waste collection vehicle (WCV), or colloquially called a Garbage Truck , Dustcart or Dustbin lorry is a truck specially designed to pick up smaller quantities of waste and haul it to landfills and other recycling or treatment facilities. They… …
69Kyphoplasty — is a medical procedure developed by orthopedist Mark A. Reiley, MD, where the original height and angle of kyphosis of a fractured vertebra (of certain types) are restored, followed by its stabilization using injected bone filler material. The… …
70Revopak — The Revopak is a type of waste collection vehicle manufactured by the British company Shelvoke and Drewry.Introduced in 1971, the Revopak was in fact a British built clone of a French Bennes Ray Superpac. It was among one of the first vehicles to …
