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The EGR system routes many of the exhaust gases (6 ? 10%) through the EGR valve, last on the Intake System, and in the end in the combustion chamber. The exhaust gases are inert i.e. they don't burn within the combustion chamber; also, the exhaust gases use up a number of the space which could preferably be taken with the intake air. This decreases the volume of intake air available for the combustion process during each Power Stroke; which experts claim decreases the peak combustion temperatures. This leads to lower NOx emissions. William went on a marvelous journey six hundred years back over time along with his nanny, Mrs. Phillips, inside first book, The Castle in The Attic. He met Sir Simon and defeated the villain, Alastor. This book starts with William being a couple of years older and Mrs. Phillips sent him a birthday present, the charm of Janus used inside the first book. The charm can be used to shrink and un-shrink things, animals, the ones. Then, if these shrunken folk spend the night time in the castle in William's attic, they wake up inside past. The attic is finished, along with a forest is away from castle. As any first-year econ student will advise you, there's 2 disciplines in economics - microeconomics and macroeconomics. And they don't like the other. As the U.S. Congress prepares to lower the hammer for the financial services industry, consider the forces which are butting heads and why it is just seeing that they've thought we would do this. Microeconomics may be the area that business students gravitate towards. Profit maximization could be the mantra, with marginal costs and fixed costs optimized to generate businesses as much money as possible. Microeconomics compares the world with the eyes of the CEO, who looks to accomplish what's best for his company - bring in more money and deliver value.