11.   The two devices are a trap that remove particles from the exhaust and a catalytic converter that removes nitrogen oxide.

12.   These particles must be removed or they will scratch the work surface.

13.   This method can block microscopic protozoa and viruses and remove particles that cloud water.

14.   Cow albumen had traditionally been used to remove particles that can make wine appear cloudy.

15.   Denver Broncos offensive lineman Mark Schlereth was recovering Tuesday after surgery to remove loose particles from his left knee.

16.   Geiger will have loose particles removed from his knee by team doctor Jack McPhilemy, who has been the busiest man in the organization in the preseason.

17.   Schlereth was scheduled for arthroscopic surgery to remove loose particles which have been bothering him for several weeks.