(v. t.) To combine or impregnate with nitrogen; to convert, by oxidation, into nitrous or nitric acid; to subject to, or produce by, nitrification.
Example Sentences:
(1) The influence of salt mixtures consisting of Ca(H2PO4)2, trace elements, CaSO4, CaCO3, Na2CO3, NaCl and K2SO4 in different combinations on the nitrifying power, evolution of carbon dioxide and the total number of bacteria was studied in arid soils (sandy and alluvial) and semi-humid ones (chernozem and rendzina).
(2) However, nitrification is a cause of significant errors in measuring BOD, particularly when a large population of nitrifying organisms are existing in water such as effluents from biological treatment plants.
(3) The abundance of nitrifying bacteria, determined by most-probable-number procedures, within habitats of the Passaic River was as follows: rooted aquatic plants greater than algae approximately equal to rocks greater than sediments greater than greater than water.
(4) Extracts of the hyphae of a nitrifying strain of Aspergillus flavus formed nitrite and nitrate from 3-nitropropionate.
(5) The effects of two herbicides, Sencor and Goltix, on nitrification in two soils were studied using a mixed culture of nitrifying bacteria.
(6) Concentrated pine bark tannins, similar in origin to those in effluents at the well-nitrifying chipmill site, were tested for toxicity to pure cultures of nitrifying bacteria.
(7) The counts of nitrifying bacteria also increased whereas those of desulfurizers remained non-affected.
(8) Three bacteria, two of which were previously noted as active heterotrophic nitrifiers, were examined for their ability to grow and nitrify with the siderophore deferrioxamine B as the carbon source.
(9) Pseudomonas aureofaciens displayed limited growth and nitrification while a heterotrophic nitrifying Alcaligenes sp.
(10) This is the first description of thermophilic nitrifying bacteria belonging to the genus Nitrosomonas.
(11) Enrichment cultures of nitrifying microorganisms were obtained from all sites using NH4+ as a source of energy, but enrichments for nitrite oxidizers were unsuccessful.
(12) Nitrifying bacteria were detected in 64% of samples collected from five chloraminated water supplies in South Australia and in 20.7% of samples that contained more than 5.0 mg of monochloramine per liter.
(13) Various heterotrophic nitrifiers have been tested and found to also be aerobic denitrifiers.
(14) Nitrite and hydroxylamine reductases were found in both nitrifying bacteria, and optimum activity for each enzyme was obtained with NADH or NADPH with either FMN or FAD.
(15) Thiosphaera pantotropha thus is similar to other heterotrophic nitrifiers-denitrifiers in that it conserves energy while denitrifying but has not been observed to do so when heterotrophically nitrifying.
(16) Nitrifying bacteria were found to be widely distributed among the products of the weathering crust of ultrabasite rocks.
(17) At higher levels of NH4-N additions, ammonium as sulphate nitrified faster than as nitrate, especially in the high concentrations of NH4-N. Nitrite was detected in small amounts of less than 10 ppm in some soils, particularly in the coarse-textured ones, regardless of the type and amount of the fertilizer applied.
(18) Laboratory experiments confirmed that nitrifying bacteria are relatively resistant to the disinfectant.
(19) We have investigated the substrate specificity of ammonia monooxygenase in whole cells of the nitrifying bacterium Nitrosomonas europaea for a number of aliphatic halogenated hydrocarbons.
(20) The examination of proton translocation of four different bacterial nitrifiers capable of pyruvic oxime [(PO), CH3-C(NOH)-COOH] nitrification and by an NH4+ oxidizing Arthrobacter sp.