valve breathing
61Flathead engine — A flathead engine or sidevalve engine (sometimes called a flatty) is an internal combustion engine with valves placed in the engine block beside the piston, instead of in the cylinder head, as in an overhead valve engine. The design was common on …
62Health and Disease — ▪ 2009 Introduction Food and Drug Safety. In 2008 the contamination of infant formula and related dairy products with melamine in China led to widespread health problems in children, including urinary problems and possible renal tube… …
63SEFA — The SEFA is a make of backpack industrial breathing set formerly made by Sabre Safety. It is an oxygen rebreather. SEFA is an acronym for Selected Elevated Flow Apparatus .DescriptionIt is in a shiny backpack stainless steel sheet casing with… …
64Aqua-lung — Aqualung was the original name for the first open circuit scuba diving equipment, developed by Emile Gagnan and Jacques Cousteau in 1943 [ Year by Year 1943 History Channel International] . It consists of a high pressure diving cylinder and a… …
65List of horn techniques — Some of these horn techniques are not unique to the horn, but are applicable to most or all wind instruments. Double/triple tonguing Normal tonguing consists of interrupting the air stream by tapping the back of the front teeth with the tongue as …
66Modes of mechanical ventilation — Contents 1 Positive and negative pressure ventilation 1.1 Negative pressure ventilation 1.1.1 Types of negat …
67Snorkeling — (British spelling: snorkelling) is the practice of swimming at the surface of a body of water while equipped with a diving mask, a shaped tube called a snorkel, and usually swimfins. In cooler waters, a wetsuit may also be worn. Combining these… …
68Medical ventilator — For other uses, see Modes of mechanical ventilation. For other uses, see ventilation (physiology). The Bird VIP Infant ventilator A medical ventilator can be defined as any machine designed to mechanically move breatheable air into and out of the …
69Buoyancy compensator (diving) — Stab jacket redirects here. For a type of body armor, see stab vest. A buoyancy compensator (or buoyancy control device, BC or BCD) is a piece of diving equipment worn by divers to provide: * life saving emergency buoyancy both underwater and on… …
70Cam-in-block — The cam in block valvetrain layout of piston engines is one where the camshaft is placed within the cylinder block, usually beside and slightly above the crankshaft in a straight engine or directly above the crankshaft in the V of a V engine.… …
