Results 41 to 50 of about 1,013,250 (360)

Effect of long-term changes in soil chemistry induced by road salt applications on N-transformations in roadside soils [PDF]

open access: yes, 2008
Of several impacts of road salting on roadside soils, the potential disruption of the nitrogen cycle has been largely ignored. Therefore the fates of low-level ammonium-N and nitrate-N inputs to roadside soils impacted by salting over an extended period (
Cresser, M.S., Green, S.M., Machin, R.
core   +1 more source

Nitrogen absorption kinetics and accumulation of soluble nitrogenous fractions and sugars in sunflower

open access: yesPesquisa Agropecuária Tropical, 2014
Sunflower (Helianthus annuus L.) has emerged as a promising crop among oilseed species with agro-energetic importance. Considering the nutrients required by the sunflower crop, nitrogen is the most limiting for yield, besides affecting its oil production.
Janiélio Gonçalves da Rocha   +4 more
doaj   +1 more source

Ammonium Oxathioamidate

open access: yesMolbank
Ammonium oxathioamidate (1) was synthesised by the reaction between O-ethyl-thioxamate (oxalic acid-1-amide-2-O-ethyl ester) and ammonium hydrogen carbonate in water solution. Compound 1 was fully characterised by both microanalytical (elemental analysis, melting point determination) and spectroscopic means (FT-IR and NMR spectroscopy).
M. Carla Aragoni   +7 more
openaire   +5 more sources

Ammonium Does Not Induce Ammonium Absorption in Tomatoes [PDF]

open access: yesJournal of the American Society for Horticultural Science, 1998
We examined root ammonium absorption by tomato seedlings (Lycopersicon esculentum Mill. `T-5') after first exposure of the roots to ammonium. Some plants received a nutrient medium containing nitrate as the sole N source. In a second treatment, the leaves were sprayed daily with a urea solution, while the roots were in N-free medium.
Arnold J. Bloom, Bernard A. L. Nicoulaud
openaire   +2 more sources

Stereospecific and chemoselective copper-catalyzed deaminative silylation of benzylic ammonium triflates [PDF]

open access: yes, 2019
A method for the synthesis of benzylsilanes starting from the corresponding ammonium triflates is reported. Silyl boronic esters are employed as silicon pronucleophiles, and the reaction is catalyzed by copper(I) salts.
Gross, Benjamin M.   +2 more
core   +1 more source

Nitrogen isotope discrimination in open-pollinated and hybrid canola suggests indirect selection for enhanced ammonium utilization

open access: yesFrontiers in Plant Science, 2022
Nitrogen isotope discrimination (Δ15N) may have utility as an indicator of nitrogen use in plants. A simple Δ15N-based isotope mass balance (IMB) model has been proposed to provide estimates of efflux/influx (E/I) ratios across root plasma membranes, the
Yi Hu   +3 more
doaj   +1 more source

Increasing Hydrogen Density with the Cation-Anion Pair BH4−-NH4+ in Perovskite-Type NH4Ca(BH4)3

open access: yesEnergies, 2015
A novel metal borohydride ammonia-borane complex Ca(BH4)2·NH3BH3 is characterized as the decomposition product of the recently reported perovskite-type metal borohydride NH4Ca(BH4)3, suggesting that ammonium-based metal borohydrides release hydrogen gas ...
Pascal Schouwink   +4 more
doaj   +1 more source

Deposition and Transformation of Nitrogen after Soil Fumigation with Ethanedinitrile

open access: yesHortScience, 2020
A novel methyl bromide alternative, ethanedinitrile (EDN), has been reported to be efficacious against soil-borne pathogens, weeds, and plant-parasitic nematodes.
Mary C. Stevens   +2 more
doaj   +1 more source

Controlled growth of TiO2/Zeolite nanocomposites for simultaneous removal of ammonium and phosphate ions to prevent eutrophication

open access: yesFrontiers in Materials, 2022
Graphical ...
Muhammad Hamza Ashfaq   +12 more
doaj   +1 more source

A catalyst-coated diaphragm assembly to improve the performance and energy efficiency of alkaline water electrolysers

open access: yesCommunications Engineering
Alkaline water electrolysers are ideal for gigawatt-scale hydrogen production due to the usage of non-precious metal and low-cost raw materials. However, their performances are modest with the separated electrode and diaphragm structure which can date ...
Zhuang Xu   +7 more
doaj   +1 more source

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