City grime is an assortment of thousands of chemical substances – – including nitrogen oxides – – emitted into the air by automobiles, factories and other resources. It had been believed that nitrogen oxides become inactive if they are trapped in grime on city surfaces. Field studies conducted in Toronto and Leipzig, Germany, revealed that sunshine releases nitrogen oxides from grime. When in the new air, nitrogen oxides can combine with other pollutants called volatile organic compounds to create ozone, which is the main component of smog. Monday in the annual conference of the American Chemical Society in Boston The study finding is to be presented. The current understanding of urban air pollution does not include the recycling of nitrogen oxides and potentially other compounds from building surfaces, study author James Donaldson, a University of Toronto chemistry professor, said in a culture news release.Inside our delta opioid receptor agonist plan, we have concluded enrollment inside our Stage 2a proof-of-concept study of ADL5859 and ADL5747 in osteoarthritis patients and expect to present top collection results from this research in mid-2010. We also were very happy to initiate in the first quarter our Phase 2a proof-of-concept study of ADL5747 in post-herpetic neuralgia and enrollment is now well underway. Inside our opioid bowel dysfunction program, both ADL7445 and ADL5945 are being evaluated in patients with OBD now. We are pleased with the outcomes observed to date in our Phase 1 plan and anticipate initiating proof-of-concept testing later this season. Progress continues with ENTEREG as well, added Mr. Dougherty. First quarter product sales were $5.