Results 261 to 270 of about 43,948 (300)
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Photocatalytic oxidation of nitrite in water to nitrate
Environmental Pollution, 1989It is found that the nitrite in water is converted into nitrate by irradiation in the presence of oxygen and titanium dioxide which acts as a catalyst. As nitrate is a less hazardous contaminant, this method might be worth investigating further for the treatment of water.
K, Tennakone +2 more
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The mechanism of nitrite oxidation by Nitrobacter winogradskyi
Biochimica et Biophysica Acta (BBA) - Enzymology and Biological Oxidation, 1966Summary 1. With exception of certain narcotics, the effect of classical inhibitors on the nitrite respiration of Nitrobacter winogradskyi was in agreement with the usual inhibition pattern characteristic of a cytochrome respiratory chain. Strong inhibition by quinacrine and its reversal by flavin-adenine dinucleotide shows that a flavin is ...
A, Van Gool, H, Laudelout
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Studies on Nitrite Oxidizing Microorganisms: I. Nitrite Oxidation by Nitrobacter
Soil Science Society of America Journal, 1961Abstract Quantities of Nitrobacter sufficient for whole cell and enzyme studies have been obtained by cultivation under forced aeration in a soluble mineral medium. That the nitrite oxidase activity of washed cells and extracts is intimately linked to the cytochrome system ...
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Biotransfornation of nitric oxide, nitrite and nitrate
International Archives of Occupational and Environmental Health, 1983Biotransformation of NO, nitrite and nitrate was investigated in rats and mice in a 15NO inhalation experiment and intraperitoneal injection experiments of 15N-nitrite and 15N-nitrate, and the following results were obtained: (1) Rats were forced to inhale 15NO (145 ppm, 123 minutes) or were given an intraperitoneal injection of 15N-nitrite (2 mg ...
K, Yoshida +3 more
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Nitrite reduction to nitric oxide in the vasculature
American Journal of Physiology-Heart and Circulatory Physiology, 2008through the continuous generation of vasoactive substances including nitric oxide (NO), prostaglandins, and endothelin, the vessel wall is actively involved in regulating blood flow in response to tissue demand ([27][1]).
Jon O, Lundberg, Eddie, Weitzberg
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Enzymology of the oxidation of ammonia to nitrite by bacteria
Antonie van Leeuwenhoek, 1997The enzymes which catalyze the oxidation of ammonia to nitrite by autotrophic bacteria are reviewed. A comparison is made with enzymes which catalyze the same reactions in methylotrophs and organotrophic heterotrophic bacteria.
A B, Hooper +3 more
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Nitrite-Nitric Oxide Signaling and Cardioprotection
2017Cardioprotective strategies to prevent damage to mitochondria in acute myocardial infarction are warranted to reduce lethal myocardial ischemia/reperfusion (I/R) injury. Mitochondrial antagonists in I/R are reactive oxygen species (ROS), deteriorated calcium signaling, permeabilization of the mitochondrial outer membrane (MOM) and deranged ...
Totzeck, Matthias +2 more
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The number of nitrite-oxiding bacteria in soil percolated with nitrite
Soil Science and Plant Nutrition, 1971Abstract Quastel and Scholefield (1) observed that soils, after a preliminary percolation with nitrite, oxidized nitrite at a constant rate without a lag period. Oxidation of ammonium exhibited similar kinetics. Such soils were regarded as being saturated with nitrite-oxidizing bacteria.
Michinori Nishio, Choseki Furusaka
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A new oxidation system using nitrite oxidants
Research on Chemical Intermediates, 1998The oxidative reactions using alkyl nitrites (RONO) as oxidant have been developed by Ube Industries, Ltd. The substrates such as CO and/or unsaturated-and/or carbonyl-compounds are oxidized by RONO over the palladium catalyst with no contact of molecular oxygen.
Asumaru Nakamura, Tokuo Matsuzaki
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Oxidation of Nitrite by Peroxynitrous Acid
The Journal of Physical Chemistry A, 2003The kinetics of the oxidation of nitrite to nitrate by peroxynitrous acid at pH 5.2 is best described by the rate law kobs = kiso + k‘[NO2-] + k‘ ‘[NO2-]2, in which the peroxynitrous acid isomerization rate constant kiso = (1.10 ± 0.05) s-1, k‘ = (3.2 ± 0.1) M-1 s-1, and k‘ ‘ = (4.2 ± 0.3) M-2s-1, at 25 °C.
Patrick Maurer +6 more
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