My 1979 dissertation was a model relating interannual and interseasonal variations in the shape of the atmosphere, as reflected by the surface barometric pressure field, to variations crop yields across the United States.
Too many wells release the natural pressure in the field, like fizz from a soda can, and it becomes too expensive to pump the oil out.
By focusing on the illegal activity of officers who were under pressure in the field, prosecutors are neglecting what was declared to be legal by policymakers in Washington.
They decline significantly from one year to the next because each barrel of oil taken from a reservoir reduces the pressure within the field, leaving less force available to push the next barrel of oil up the well.
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The Spanish openers made an impressive start but continued pressure and solid work in the field meant they were all out for 105 off 33 overs.
Welsh pressure told when a cross-field kick on the sixth tackle by lively scrum-half Sammut saw Dyer climb high and throw a speculative pass to the right wing, where centre Tony Martin cashed in.
With Red Bull unable to fix the problem and his title hopes sliding away, Vettel produced the drive of a champion, fighting his way from the back of the field to keep the pressure on Alonso.
In a newly professional game, clubs are under financial pressure to succeed both on the field and commercially, and to do so they have sought to acquire the best and most popular players they can afford.
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Coach Marcelo Bielsa has the team positioned much further up the field, trying to put pressure on the opponent in their half.
Andrews can show that it's more than just theory: the two have successfully created an optical field that flipped the usual pressure and started pulling objects toward the light.
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Samuels immediately took the new ball but Bravo, whose decision-making in the absence of skipper Chris Gayle has been far from impressive, failed to construct a field conducive to maintaining the pressure and Prince swiftly went on to reach his half-ton.
The Iraqi oil ministry cancelled the contract after Lukoil refused to give in to pressure from Baghdad to start work on the field in breach of United Nations trade sanctions.
The ruling military - the Supreme Council of the Armed Forces (Scaf) - headed by Field Marshal Tantawi, has been under pressure to bring forward the election date to May.
But any hopes they had for gaining a foothold in commercial aviation were dashed when the Commerce Department, under pressure from underemployed male pilots, exiled women from the field by prohibiting them from flying planes carrying passengers in bad weather.
After 3 weeks of game-altering blown calls, on-field melees risking player safety, and mounting pressure from frustrated fans, players, media, and coaches alike, the NFL came to terms with the NFL Referees Association with a new 8-year labor contract.
The research could put pressure on big drug companies to wade into the ethically complicated field of stem-cell research.
But Mr Field, a former welfare minister, said he had resisted pressure from Labour's whips and would be keen to have one of the referendums in his Birkenhead constituency.
Nobody in sports had ever faced the sort of pressure, and abuse, that Jackie Robinson did when he took the field for the first time in a Brooklyn uniform on April 15, 1947.
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But continued Australian pressure eventually produced another score, again for Jennings in the same area of the field, after he was well set up by Darren Lockyer.
And Leeds' pressure told again just before half-time when the Rhinos switched play from one side of the field to the other before veteran centre Keith Senior got winger Hall over at the corner.
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