Written By: Alkylation, in petroleum refining, chemical process in which light, gaseous hydrocarbons are combined to produce high-octane components of gasoline. The light hydrocarbons consist of olefins such as propylene and butylene and isoparaffins such as isobutane.
Five years in the making, it was the most expensive nature documentary series ever commissioned by the BBC and also the first to be filmed in high definition. Planet Earth premiered on 5 March 2006 in the United Kingdom on BBC One, and by June 2007 had been shown in 130 countries.The series comprises eleven episodes, each of which features a global overview of a different biome or habitat on Earth.At the end of each fifty-minute episode, a ten-minute featurette takes a behind-the-scenes look at the challenges of filming the series.he series comprises eleven episodes, each of which features a global overview of a different biome or habitat on Earth. At the end of each fifty-minute episode, a ten-minute featurette takes a behind-the-scenes look at the challenges of filming the series.
The rounded green hills that the Teletubbies called home were actually part of a farm in Wimpstone, Warwickshire. When filming finished in 2001, the owner of the land was so sick of Teletubby fans trespassing on it that she flooded it and turned it into a pond. People were jumping fences and crossing cattle fields. Weâre glad to see the back of it, said Rosemary Harding, who now runs an aquatics centre at the site. 2.