vacuum and pressure method
1Vacuum distillation — At atmospheric pressure, dimethyl sulfoxide boils at 189°C. Under a vacuum, it distills off into the connected receiver at only 70°C. Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is …
2Vacuum 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… …
3Vacuum Arc Remelting — (VAR) is a secondary melting process for production of metal ingots with elevated chemical and mechanical homogeneity for highly demanding applications. [ Modeling for Casting Solidification Processing , by Kuang Oscar Yu,CRC; 1st edition… …
4Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
5Vacuum 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… …
6Vacuum 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… …
7Vacuum mattress — A vacuum mattress, or vacmat, is a medical device used for the immobilisation of patients, especially in case of a vertebra, pelvis or limb trauma (especially for femur trauma). It is also used for manual transportation of patients for short… …
8Vacuum bell (medicine) — The vacuum bell is a medical device used in the treatment of pectus excavatum, one of the most common chest wall defects. [cite web |url=http://www.findarticles.com/p/articles/mi m3225/is n1 v46/ai 12450746 |title=Pectus excavatum pathophysiology …
9method — The mode or manner or orderly sequence of events of a process or procedure. SEE ALSO: fixative, operation, procedure, stain, technique. [G. methodos; fr. meta, after, + hodos, way] Abell Kendall m. a …
10Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
