earth pressure
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Earth pressure balance — Earth pressure balance, or EPB, is a mechanised tunneling method in which spoil is admitted into the tunnel boring machine (TBM) via a screw conveyor (cochlea) arrangement which allows the pressure at the face of the TBM to remain balanced… … Wikipedia
Lateral earth pressure — is the pressure that soil exerts in the horizontal plane. The common applications of lateral earth pressure theory are for the design of ground engineering structures such as retaining walls, basements, tunnels, and to determine the friction on… … Wikipedia
Earth sheltering — is the architectural practice of using earth against building walls for external thermal mass, to reduce heat loss, and to easily maintain a steady indoor air temperature. Earth sheltering is popular in modern times among advocates of passive… … Wikipedia
Pressure controlled intermittent mandatory ventilation — (PC IMV) is any mode of mechanical ventilation with preset inspiratory pressure (Pressure Control) and inspiratory time (Ti). Spontaneous breaths (i.e., inspiration is patient triggered and patient cycled) can exist between mandatory breaths… … Wikipedia
Earth in science fiction — Earth An overwhelming majority of fiction is set on or features the Earth. However, authors of speculative fiction novels and writers and directors of science fiction film deal with Earth quite differently from authors of conventional fiction.… … Wikipedia
Earth's gravity — Earth s gravity, denoted by g , refers to the gravitational attraction that the Earth exerts on objects on or near its surface. Its strength is usually quoted in terms of the acceleration it gives to falling bodies (acceleration due to gravity),… … Wikipedia
pressure groups — Pressure groups are organizations whose members act collectively to affect public policy in order to promote a common interest. They are usually distinguishable from political parties in that they do not wish to govern. They may be divided… … Encyclopedia of contemporary British culture
pressure groups — work on behalf of a particular section of society, e.g. children or nurses, or for a particular issue or cause, e.g. banning the use of landmines. Groups that work on behalf of a section of society are sometimes called interest groups. Those that … Universalium
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
pressure — pressureless, adj. /presh euhr/, n., v., pressured, pressuring. n. 1. the exertion of force upon a surface by an object, fluid, etc., in contact with it: the pressure of earth against a wall. 2. Physics. force per unit area. Symbol: P Cf. stress… … Universalium
earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… … Universalium
