Vacuum sewer — Vacuum sewers were first installed in Europe in 1882 but until the last 30 years it had been relegated to a niche market. The first who has applied the negative pressure drainage (so called vacuum sewerage) was the Dutch engineer Liernur in the… … Wikipedia
Vacuum aspiration — Background Abortion type Surgical First use China 1958 and UK 1967[1] Gestation 3 12 weeks Usage … Wikipedia
Vacuum assisted closure wound therapy — Vacuum assisted closure (VAC) is a technique of wound closure used to promote healing in large or chronic wounds, fight infection and enhance healing of burns. VAC seals the wound with a foam dressing and applies negative pressure to the wound… … Wikipedia
Post-Newtonian expansion — Post Newtonian expansions in general relativity are used for finding an approximate solution of the Einstein equations for the metric tensor that represents a multi component, tensor gravitational field potential instead of a single, scalar… … Wikipedia
Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Vacuum packing — Salt baked chicken feet sold in China: vacuum packed and ready to eat Vacuum packing or vacuum packaging is a method of packaging that removes air from the package prior to sealing. It can involve both rigid and flexible types of packaging. The… … Wikipedia
Post-invasion Iraq, 2003–present — Infobox Military Conflict campaign=Iraq War, Post Invasion caption=Occupation zones in Iraq as of September 2003 date=May 1, 2003 – present place=Iraq casus=2003 invasion of Iraq result=Conflict ongoing combatant1=flagicon|Iraq New Iraqi Army… … Wikipedia
Post-invasion Iraq (2003 to present) — See also: Iraq War, 2007 in Iraq, 2008 in Iraq, and 2009 in Iraq Post invasion Iraq (2003 to present) Part of the Iraq War … Wikipedia
Post Office Sorting Van — Infobox DMU name = British Rail Post Office Sorting Van imagesize = 300px background = #0033cc caption = NSA 80390 Ernie Gosling on display at Doncaster Works open day on 27 July 2003. This vehicle was operated by EWS country wide in the consist… … Wikipedia
Post-War France — France after LibérationBetween 1944 and 1946 France was ruled by the Provisional Government of the French Republic ( Gouvernement provisoire de la République française , GPRF). On June 2, 1944 the French Committee of National Liberation (Comité… … Wikipedia