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 ...

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 ...

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, ...

In nature, this is usually carried out by bacteria and other microorganisms ... led by Ryuhei Nakamura of the RIKEN Center for Sustainable Resource Science (CSRS), decided to try to use the same ...

Limnology and Oceanography, Vol. 62, No. 1 (2017), pp. 272-288 (17 pages) To provide mechanistic constraints to interpret nitrogen (N) and oxygen (O) isotope ratios of nitrate ( NO 3 − ), 15N/14N 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 ...