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• n  the atomic process that occurs during a chemical reaction
  he determined unique mechanisms for the photochemical reactions
• n  the technical aspects of doing something
  a mechanism of social control
  mechanisms of communication
• n  a natural object resembling a machine in structure or function
  the mechanism of the ear
  the mechanism of infection
• n  (philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes
• n  device consisting of a piece of machinery; has moving parts that perform some function

• Using this mechanism, which two Belgian physicists simultaneously posited, scientists were able to extrapolate how all particles get their mass.
• To understand this mechanism, we must take a glimpse into the future the futures market, that is.
• If such mechanisms are properly designed, they make no mistakes.

• chemical mechanism
• mechanics

News & Articles

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• Two-step mechanism of inner ear tip link regrowth
  Scientist have found an unexpected two-step process that happens during the growth and regeneration of inner ear tip links in mice. Tip links are extracellular tethers that link stereocilia, the tiny sensory projections on inner ear hair cells that convert sound into electrical signals, and play a key role in hearing. The discovery offers a possible mechanism for potential interventions that ...
  June 12, 2013 - Science Daily
• New details of natural anticancer mechanism uncovered
  Scientists have identified key triggers of an important cancer-blocking mechanism in cells. Termed “oncogene-induced senescence,” this mechanism can block most cancer types and is commonly experienced when incipient skin cancers turn instead into slow-growing moles.
  June 11, 2013 - Science Daily
• Scientists Uncover New Details of Natural Anticancer Mechanism
  Scientists at The Scripps Research Institute have identified key triggers of an important cancer-blocking mechanism in cells. Termed "oncogene-induced senescence," this mechanism can block most cancer types and is commonly experienced when incipient skin cancers turn instead into slow-growing moles.
  June 11, 2013 - Newswise

Quotes

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• Hu Jintao in BBC News
  China will continue to steadily advance the reform of the formation of the renminbi exchange rate mechanism under the principle of independent decision-making controllability and gradual progress,Mr Hu said.
• Vladimir Putin in ABC News
  Once the monitoring mechanism starts working, we will start gas supplies,Putin said after the talks with Topolanek. "But if we see them stealing it again and part of the gas is missing, we will again reduce supplies by that amount."
• Steve King in Washington Post (blog)
  But Monday, King told G. Gordon Liddy on Liddy's radio show that President Obama "has a default mechanism in him that breaks down the side of race, on the side that favors the black person."