The publication of this model in his book De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres) just before his death in 1543 was a major event in the history of science, triggering the Copernican Revolution and making an important contribution to the Scientific Revolution.
World market prices for dairy products The average world market price of butter in 1981-2006 was US$1 580/ton, fluctuating between US$1 000/ton and US$2 000/ton. It shot up to US$2 886/ton in 2007 and, in the first six months of 2008, increased further to US$4 021/ton.
Subtracting the $1.00-per-gallon tax credit results in a market demand price of $3.15 per gallon. The spot price of Midwest diesel was approximately $2.80 per gallon, indicating a 35Â¢-per-gallon difference in the market demand price for biodiesel and diesel.perating costs other than the cost of feedstock currently average approximately 59Â¢ per gallon. By-products of biodiesel production (glycerin, fatty acids, and filter cakes) provide revenues of perhaps 8Â¢ per gallon.