underwater diving, an alternative air source, or more generally alternative breathing gas source, is a secondary supply of air or other breathing gas...

This is a list of alternative media supporting the views of the American political left. It covers alternative media sources including talk radio programs...

only the seed as is common today. Sweet sorghum may be a promising alternative source of bioethanol, due to its tolerance of a wide range of climates. Cow...

An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression...

Mobile source air pollution includes any air pollution emitted by motor vehicles, airplanes, locomotives, and other engines and equipment that can be...

An air embolism, also known as a gas embolism, is a blood vessel blockage caused by one or more bubbles of air or other gas in the circulatory system...

The Special Air Service (SAS) is a special forces unit of the British Army. It was founded as a regiment in 1941 by David Stirling, and in 1950 it was...

emergency, such as depletion of the diver's main air supply, it can be used as an alternative air source or bailout bottle to allow a normal ascent in place...

Alternative fuels, also known as non-conventional and advanced fuels, are fuels derived from sources other than petroleum. Alternative fuels include gaseous...

used as a power source. The RAT generates power from the airstream by ram pressure due to the speed of the aircraft. It may be called an air driven generator...

including climate change and air pollution, high oil-prices and the potential for peak oil, development of cleaner alternative fuels and advanced power systems...

range from greenhouse gas emissions and air pollution to energy poverty and toxic waste. Renewable energy sources such as wind, hydro, solar, and geothermal...

The Special Air Service Regiment, officially abbreviated SASR though commonly known as the SAS, is a special forces unit of the Australian Army. Formed...

trends, dispersion of air pollutant plumes, air quality, atmospheric deposition, and related variables.[self-published source] The Atlantic Oceanographic...

vary from joint pain and rashes to paralysis and death. DCS often causes air bubbles to settle in major joints like knees or elbows, causing individuals...

carry their own source of breathing gas, usually filtered compressed air, allowing them greater freedom of movement than with an air line or diver's umbilical...

buildings. Air source heat pumps, which can be used for heating as well as cooling, are becoming increasingly common in cooler climates. Air conditioners...

gas from each other in an emergency, and may carry an independent alternative air source if they do not choose to rely on a buddy. Divers may need to make...

and limiting the rate of compression. If hydrogen is considered as an alternative, a possible explosion risk is balanced against less narcosis than nitrogen...

clearing, neutral buoyancy, ditching weights and ascent using an alternative air source. PADI suggest a refresher after six months inactivity, but the actual...

enough to allow a fairly high flow rate, as the air may be used as an alternative breathing air source, or to fill small lift bags. A pneumofathometer...

"decompression sickness" came from using air pressure in mining and construction, pressurized tunnel boring machines use air pressure to force water out of the...

Hyperventilation of atmospheric air at atmospheric pressures does not cause oxygen toxicity, because sea-level air has a partial pressure of oxygen of...

operate as a base or a means of transport for a small number of divers. Air is trapped inside the bell by pressure of the water at the interface. These...

system becomes safety-critical. Divers wearing dry suits have an alternative gas source available if the quick-connector systems for suit and BC are compatible...

Explosive decompression (ED) is violent and too fast for air to escape safely from the lungs and other air-filled cavities in the body such as the sinuses and...

location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and sodar (an upward-looking in-air sonar) is used...

sickness is either real or perceived motion. This may include car travel, air travel, sea travel, space travel, or reality simulation. Risk factors include...

chemist and physicist Henry Cavendish used the term "factitious air" to refer to "any kind of air which is contained in other bodies in an unelastic state,...

A diving air compressor is a breathing air compressor that can provide breathing air directly to a surface-supplied diver, or fill diving cylinders with...