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  • hydrostatic pressure
  • In this study, an attempt was made to determine the acute effects of elevated hydrostatic pressure on different intraocular cells grown in culture. (bmj.com)
  • Adenylyl cyclase activity was assessed by measuring the conversion of [ 3 H]-cAMP from [ 3 H]-ATP in response to elevated hydrostatic pressure for 1-6 hours. (bmj.com)
  • In addition, at the end of incubation period under elevated hydrostatic pressure the recovery of adenylyl cyclase activity to control levels was examined. (bmj.com)
  • RESULTS Cell viability did not change following exposure to elevated hydrostatic pressure for 6 hours. (bmj.com)
  • Cells subjected to elevated hydrostatic pressure demonstrated morphological differences characterised by a more rounded shape and a redistribution of actin stress fibres that was most prominent in lamina cribrosa astrocytes. (bmj.com)
  • A time dependent increase in basal adenylyl cyclase activity, and a decrease in maximum forskolin stimulated activity were observed in all cell lines following exposure to elevated hydrostatic pressure. (bmj.com)
  • They exhibit morphological and cytoskeletal changes as well as significant alterations of intracellular adenylyl cyclase activity following exposure to acute and sustained levels of elevated hydrostatic pressure of up to 6 hours' duration. (bmj.com)
  • 1-3 Studies of different cells from the human body reveal the effects of elevated hydrostatic pressure on cell shape and function. (bmj.com)
  • For example, in endothelial cells exposed to elevated hydrostatic pressure, release of bFGF can be induced independently of cell injury or death and may account for subsequent morphological and proliferative responses. (bmj.com)
  • 4 Similarly, elevated hydrostatic pressure is an important stimulator of matrix synthesis in cartilage. (bmj.com)
  • The effect of hydrostatic pressure (0.1-54 MPa, equivalent to pressures experienced by fish from the ocean's surface to depths of ca. 5400 m) on visual pigment absorption spectra was investigated for rod visual pigments extracted from the retinae of 12 species of deep-sea fish of diverse phylogeny and habitat. (biologists.org)
  • Nevertheless, it is possible that all such investigations have been subject to a fundamental artefact because the elevated hydrostatic pressure encountered at depth in the sea has been hitherto ignored. (biologists.org)
  • made
  • The wavelength of peak absorption (λ max) was shifted to longer wavelengths by an average of 1.35 nm at 40 MPa (a pressure approximately equivalent to average ocean depth) relative to measurements made at one atmosphere (ca. 0.1 MPa), but with little evidence of a change in absorbance at the λ max . (biologists.org)
  • We conclude that previousλ max measurements of deep-sea fish visual pigments, made at a pressure close to 0.1 MPa, provide a good indication ofλ max values at higher pressures when considering the ecology of vision in the deep-sea. (biologists.org)
  • All spectral measurements of deep-sea fish visual pigment made to date, and on which the observed correlations with environmental variables are based, however, have been recorded at atmospheric pressure. (biologists.org)
  • nitrogen
  • Albert A. Bühlmann recognized the problem and proposed a method which calculated maximum nitrogen loading in the tissues at a particular ambient pressure. (wikipedia.org)
  • P-Stoff: Compressed nitrogen (or compressed air) equipment to service the rocket consists of several batteries of compressed air tanks carried on the chassis frame, and a pipe fixed to the full length of the starboard beam of the lifting frame. (wikipedia.org)
  • vocal
  • The air valves are the vocal folds (the glottis), which regulate between the supraglottal and subglottal cavities, the velopharyngeal port, which regulates between the oral and nasal cavities, the tongue, which regulates between the oral cavity and the atmosphere, and the lips, which also regulate between the oral cavity and the atmosphere. (wikipedia.org)
  • To produce sounds that people today can interpret as words, the movement of air must pass through the vocal chords, up through the throat and, into the mouth or nose to then leave the body. (wikipedia.org)
  • level
  • Because of this decrease in pressure with height, it makes it very hard to compare the air pressure at ground level from one location to another, especially when the elevations of each site differ. (weather.gov)
  • At observation stations around the world the air pressure reading, regardless of the observation station elevation, is converted to a value that would be observed if that instrument were located at sea level. (weather.gov)
  • weight
  • AlterG now holds a patent for this technology, which employs air pressure to adjust the users body weight on the treadmill between 20% and 100% of normal weight. (wikipedia.org)
  • either
  • During this segment, Beakman would challenge Lester to do a stunt that illustrated a basic scientific feat. During the first season, virtually every challenge related to either air pressure or Bernoulli's principle. (wikipedia.org)
  • world
  • A filtered air positive pressure environment in laboratory animal science is a space that is under positive pressure with respect to the outside world. (wikipedia.org)
  • In some facilities, the opposite is done: negative pressure inside prevents escape of germs to the outside world. (wikipedia.org)
  • At the outbreak of the Second World War he volunteered for the Royal Air Force, but was unable to serve because of a case of childhood rheumatic fever. (wikipedia.org)
  • Now, in a world without sight or sound, a wave of air traveling at more than 800 miles per hour sweeps outwards in all directions. (wikipedia.org)
  • balance
  • This connects the nose with the middle ear and allows your body to maintain a balance of air pressure around the ear drum. (iol.co.za)
  • oral
  • The tongue body creates a velaric airsteam by changing the pressure within the oral cavity: the tongue body changes the mouth subcavity. (wikipedia.org)
  • Science
  • The show addressed this during the second season, by having Lester exclaim to Beakman (as he was explaining the science behind a trick) "AIR PRESSURE! (wikipedia.org)
  • tank
  • The measuring tank is fitted with a ventilation stud, which vents displaced air as the tank is filled. (wikipedia.org)
  • escape
  • l] the tip of the tongue is raised while the rest of the tongue remains down, permitting air to escape over its sides. (wikipedia.org)
  • term
  • The term initiator refers to the fact that they are used to initiate a change in the volumes of air cavities, and, by Boyle's Law, the corresponding air pressure of the cavity. (wikipedia.org)
  • important
  • BBC News thought it was important and has an article about the Sunderland Air Pressure Meter, a first prize winner of the national NHS Innovation Awards in the UK. (medgadget.com)
  • pollution
  • Moreover, the constantly increasing levels of air pollution in major cities across the globe is a key factor driving the growth of the global market. (meerutreporter.com)
  • According to the 2006 Food and Agriculture Organization of the United Nations (FAO) report Livestock's Long Shadow, animal agriculture contributes on a "massive scale" to global warming, air pollution, land degradation, energy use, deforestation, and biodiversity decline. (wikipedia.org)
  • It contributes to numerous forms of environmental degradation, including air and water pollution, soil depletion, diminishing biodiversity, and fish die-offs. (wikipedia.org)
  • increases
  • Increasing the number of drivers in each enclosure increases the frequency range and maximum sound pressure level, while adding additional boxes to the array will also lower the frequency in which the array achieves a directional dispersion pattern. (wikipedia.org)
  • The air circulation also increases the intensity of the winds. (wikipedia.org)
  • energy
  • By doing this, the engine acts as an air compressor, with the energy coming from the transmission used to compress the air, hence slowing the vehicle. (wikipedia.org)
  • Line arrays can be oriented in any direction, but their primary use in public address is in vertical arrays which provide a very narrow vertical output pattern useful for focusing sound at audiences without wasting output energy on ceilings or empty air above the audience. (wikipedia.org)
  • Power
  • However Clessie L. Cummins, founder of Cummins Engine Company, realized that by opening the cylinder exhaust valves when the piston reached top dead centre, rather than at the end of the power stroke, the accumulated compressed air in the cylinder could be vented before it could act as a "spring" to drive the piston back down again. (wikipedia.org)
  • base
  • Koppad was then flown out of the site on Tuesday by helicopter, along with a medical specialist, first to the Siachen base camp, then to Thois air base in Ladakh and finally to Delhi. (hindustantimes.com)
  • fish
  • Knyaz Boris I, while in summer the beach, reached by steps from the Sea Gardens, is lined with open-air bars, fish restaurants and a seemingly unending strip of nightclubs. (roughguides.com)
  • coast
  • Australian and Papuan troops advanced along the coast of the Huon Peninsula, using infantry, tanks, and air strikes against the Japanese positions, which were generally sited at creek crossings in the jungle. (wikipedia.org)
  • A three-pronged approach was taken: Collecting centres for native foodstuffs and tracks leading from the coast were bombed by the US Fifth Air Force. (wikipedia.org)
  • PT boats of Task Group 70.1 attempted to interdict barge traffic along the coast by night, while Fifth Air Force fighters conducted sweeps for barges by day. (wikipedia.org)
  • conditions
  • Soldiers posted in harsh icy conditions are trained to look for air pockets in case of an avalanche and know how to clear the snow near the nose and the mouth so that they can keep breathing. (hindustantimes.com)
  • team
  • In February 1958, eight Manchester United players were killed in the Munich air disaster, when the aeroplane carrying their team back from a match in Belgrade crashed while attempting to take off from a refuelling stop in Munich. (wikipedia.org)
  • Reward: A vegetarian dinner cooked by Tommy Banks Brought into the boardroom: Danny, Charles and Elliot Fired: Danny, with regret - For his indecisive leadership, his poor time management that lost his team trade, and for being unable to handle the pressure of his role. (wikipedia.org)
  • generally
  • His two X-15 experimental rocket aircraft flights in 1963 that exceeded the Kármán line - the altitude of 100 kilometres (62 miles), generally considered to mark the threshold of outer space - qualified him as an astronaut under the rules of the U.S. Air Force and the Fédération Aéronautique Internationale (FAI). (wikipedia.org)