11.   It was as if Marc himself were some sort of electrical power source.

12.   Their supporters say they supply an environmentally clean and safe power source, producing no pollutants.

13.   Among the clients, says Nevola, is a utility company that has an emergency system for dispatching crews, monitoring repairs and power sources.

14.   And Leonardo would certainly have adopted a more efficient power source if one had been available.

15.   And Simao likes those with the safety of several power sources -- coal, oil, hydro or nuclear.

16.   And there is no power source except for a few solar panels.

17.   And with shortwave radios, batteries are often the preferred power source.

18.   Another obstacle often not considered in the trend toward miniaturization in computing is the question of power sources, Whitted noted.

19.   As costs come down with increased production, fuel cells are seen as a low-pollution alternative to other power sources for electricity, heat and even transportation.

20.   As for Thompson, he has suffered in outfield comparisons with Roberson and the emerging power source, Butch Huskey, this spring.