valve breathing
1breathing valve — oral valve (the flap attached just inside the jaws which stop water escaping from the mouth during exhalation, helping to maintain a unidirectional flow. Usually a valve is found just inside the ring of teeth in the jaw. Also called a buccal… …
2breathing valve — noun : one of certain folds of membrane that control the direction of the flow of water through the mouth, past the gills, and to the exterior in many fishes …
3Multi-valve — A cylinder head of a four valve engine. ( Nissan VQ engine ) In automotive engineering, a multi valve (or multivalve) engine is one where each cylinder has more than two valves. A multi valve engine has better breathing and can spin at higher rpm …
4Self-contained breathing apparatus — SCBA redirects here. For other uses, see SCBA (disambiguation). Not to be confused with the very similar Self Contained Underwater Breathing Apparatus. Toronto firefighter wearing an SCBA A self contained breathing apparatus, or SCBA, sometimes… …
5Bag valve mask — A bag valve mask (also known as a BVM or Ambu bag) is a hand held device used to provide ventilation to a patient who is not breathing or who is breathing inadequately. The device is a normal part of a resuscitation kit for trained professional,… …
6Buddy breathing — is a rescue technique used scuba diving out of gas emergencies, when two divers share one demand valve, alternately breathing from it.Running out of breathing gas generally happens as a result of staying underwater too long or breathing equipment …
7Pillar valve — A pillar valve is the type of cylinder valve which is commonly found fitted to scuba diving cylinders. The name refers to the part of the cylinder, not to any part of the breathing set which the cylinder is fitted into. Types of pillar valve… …
8Bypass (valve) — In rebreather breathing sets, a bypass is a hand operated valve that can be used to let more oxygen (or other breathing gas) into the breathing system, by passing the cylinder s flow rate control valve …
9Aortic valve replacement — is a cardiac surgery procedure in which a patient s aortic valve is replaced by a different valve. The aortic valve can be affected by a range of diseases; the valve can either become leaky (aortic insufficiency / regurgitation) or partially… …
10Variable valve actuation — Variable Valve Actuation, or VVA, is a generalised term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine. There are many ways in which this can be achieved,… …
