valve breathing
31Davis Submerged Escape Apparatus — A Davis Submerged Escape Apparatus The Davis Submerged Escape Apparatus (also referred to as DSEA), was an early type of oxygen rebreather invented in 1910 by Sir Robert Davis, head of Siebe Gorman and Co. Ltd., inspired by the earlier Fleuss… …
32Frogman — This article is about a type of military diver. For other uses, see Frogman (disambiguation). A French frogman with bag on chest rebreather with 2 breathing tubes (model Oxygers , 1957) …
33Full face diving mask — A full face diving mask is a type of diving mask that seals the whole of the diver s face from the water and contains a mouthpiece or demand valve that provides the diver with breathing gas.cite journal |author=Norfleet WT, Hickey DD, Lundgren CE …
34fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …
35Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… …
36Oxygen mask — A plastic oxygen mask on an ER patient. An oxygen mask provides a method to transfer breathing oxygen gas from a storage tank to the lungs. Oxygen masks may cover the nose and mouth (oral nasal mask) or the entire face (full face mask). They may… …
37List of diving hazards and precautions — Contents 1 Effects of relying on breathing equipment while underwater 2 Effects of barotrauma or pressure damage 2.1 …
38First aid — This article is about the provision of immediate care. For the Transformers character, see First Aid (Transformers) …
39List of dog diseases — This list of dog diseases is a continuously updated selection of diseases and other conditions found in the dog. Some of these diseases are unique to dogs or closely related species, while others are found in other animals, including humans. Not… …
40transplant — transplantable, adj. transplantation, n. transplanter, n. v. /trans plant , plahnt /; n. /trans plant , plahnt /, v.t. 1. to remove (a plant) from one place and plant it in another. 2. Surg. to transfer (an organ, tissue, etc.) from one part of… …
