Many parents view private preschool as a necessary step in the even more stressful process of securing a place in a private grade school, the process for which has been chronicled recently in the documentary "Getting In" on the TLC cable channel.

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The Germans also used Fischer-Tropsch process to produce high grade diesel fuels from both coal and wood.

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Once a complaint is filed, the professor usually has to undergo a prolonged accusatory process to defend the grade.

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Silicon, the major raw material used in the manufacture of solar panels, requires an energy-intensive process to turn it into solar-grade silicon.

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She said Kent Police's vetting procedures, which were used during the recruitment process, did not normally require social networks to be scrutinised for posts of this grade.

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The shift marks the latest attempt by city officials to address a seemingly intractable problem: How to create equity in the admissions process for its gifted and talented program, which begins in kindergarten and goes through third grade.

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Wander into any eighth-grade science fair and you're likely to see an example of this destructive process at work - place two dissimilar metals in an electrolyte solution and one of the materials will slowly steal ions from the other, causing it to oxidize, become brittle and eventually break apart.

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