Computer simulations have become an important part of spectroscopic studies. Not only do they help experimenters analyse results, they are also important for data collection and information management....

Fertilizer consumption has increased three fold during the past 30 years. It reached one million nutrient tones in 1980/81, two million tons in 1992/93 and three million tons in 2002/03. Urea, today, is made in approximately 75 factories worldwide with a total capacity approaching 100,000,000 tons annually. Urea hydrolyzed by urease....