Results 31 to 40 of about 1,236,345 (391)

Global database of diffuse riverine nitrogen and phosphorus loads and yields

open access: yesGeoscience Data Journal, 2021
Human activities have increased the input of nitrogen and phosphorus into riverine systems. These inputs can increase algal growth that degrades aquatic ecosystems.
Rich W. McDowell   +3 more
doaj   +1 more source

Isoform-Specific NO Synthesis by Arabidopsis thaliana Nitrate Reductase

open access: yesPlants, 2019
Nitrate reductase (NR) is important for higher land plants, as it catalyzes the rate-limiting step in the nitrate assimilation pathway, the two-electron reduction of nitrate to nitrite.
Marie Agatha Mohn   +2 more
doaj   +1 more source

Physico-Chemical Analysis of Drinking Water from the Town of Bârlad, Vaslui County

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2022
The quality of drinking water was investigated in two localities from Vaslui county (Bârlad and Văleni) by comparison with a sample from Galați county.
Gina Genoveva ISTRATE   +1 more
doaj   +1 more source

Efficiency of microalgae cultures for nutrient removal from domestic wastewater [PDF]

open access: yesAdvances in Environmental Technology, 2022
Domestic wastewaters are one of the main sources of contamination and diseases. However, they can be treated and potentially reused if certain organic and inorganic compounds and molecules are eliminated.
Wilder Lopez Ponte   +4 more
doaj   +1 more source

Adsorption of Nitrate by a Novel Polyacrylic Anion Exchange Resin from Water with Dissolved Organic Matters: Batch and Column Study

open access: yesApplied Sciences, 2019
A novel anion exchange resin AEE-3 was synthesized by N-alkylation of a weakly basic polyacrylic anion exchanger D311 with 1-bromopropane to effectively remove nitrate (NO3−-N) from aqueous solution. The related finding revealed that its adsorption
Yue Sun   +3 more
doaj   +1 more source

Efficient syntheses of climate relevant isoprene nitrates and (1R,5S)-(−)-myrtenol nitrate [PDF]

open access: yes, 2016
Here we report the chemoselective synthesis of several important, climate relevant isoprene nitrates using silver nitrate to mediate a ’halide for nitrate’ substitution. Employing readily available starting materials, reagents and Horner–Wadsworth–Emmons
Bew, Sean   +3 more
core   +2 more sources

Nitrogen Deposition on Danish Nature

open access: yesAtmosphere, 2018
Eutrophication events are frequent in Inner Danish waters and critical loads are exceeded for much of the Danish sensitive terrestrial ecosystems. The Danish air quality monitoring program combines measurements and model calculations to benefit from the ...
Thomas Ellermann   +10 more
doaj   +1 more source

Nitrate deposition to surface snow at Summit, Greenland, following the 9 November 2000 solar proton event [PDF]

open access: yes, 2014
This study considers whether spikes in nitrate in snow sampled at Summit, Greenland, from August 2000 to August 2002 are related to solar proton events. After identifying tropospheric sources of nitrate on the basis of correlations with sulfate, ammonium,
Dibb, Jack E.   +7 more
core   +2 more sources

Quantitative aspects of nitric oxide production from nitrate and nitrite

open access: yesEXCLI Journal : Experimental and Clinical Sciences, 2022
Nitric oxide (NO) is involved in many physiological and pathological processes in the human body. At least two major pathways produce NO: (1) the L-arginine-NO-oxidative pathway in which NO synthase (NOS) enzymes convert L-arginine to NO; (2) the nitrate-
Asghar Ghasemi
doaj   +1 more source

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