Whereas bacteria are extremely effective nitrate ... Although an early study indicated the presence of some anaerobic nitrate reduction occurring in rodent intestinal tissues 27, later the same ...

3 (May 2010), pp. 1064-1074 (11 pages) We elucidate the controls on the δ¹ɸO values of microbially produced nitrate by tracking the δ¹ɸO of nitrite and nitrate during bacterial nitrite oxidation, ...

When bacteria in the mouth break down ... 001) increases in nitrate, nitrite, and nitric oxide reductase genes in stool samples collected from migraineurs. In oral samples, nitrate, nitrite ...

753-762 (10 pages) We examined the oxygen isotopic systematics for ammonia oxidation, the first step in the regeneration of nitrate from ammonium. In particular, oxygen isotopic fractionation and ...

For decades the city of Cold Spring, Minn., has wrestled with pollution from farms fouling its drinking water. Sealing contaminated wells and digging new ones didn't fix it. Changes to farm ...

Denitrification is a series of reduction reactions starting with nitrate and ending with the reduction of N 2 O to nitrogen gas, with no greenhouse effect. This reaction is unique to ...