Results 31 to 40 of about 56,230 (157)

Zeolite from alkali modified kaolin increases NH4+ retention by sandy soil : column experiments

open access: yes, 2009
Sandy soils have low water and nutrient retention capabilities so that zeolite soil amendments are used for high value land uses including turf and horticulture to reduce leaching losses of NH4+ fertilisers.
Singh, Balbir   +3 more
core   +1 more source

Superior glucose metabolism supports NH4+ assimilation in wheat to improve ammonium tolerance

open access: yesFrontiers in Plant Science
The use of slow-release fertilizers and seed-fertilizers cause localized high-ammonium (NH4+) environments in agricultural fields, adversely affecting wheat growth and development and delaying its yield.
Jinling Hu   +5 more
doaj   +1 more source

Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems

open access: yes, 2016
The solubility of ammonium metavanadate (NH4VO3) in NH4H2PO4-H2O and (NH4)(3)PO4-H2O systems at T = 298.15-328.15 K was measured using the classic isothermal dissolution method. The densities and pH values of the solutions were also determined.
Zhang Yi   +4 more
core   +1 more source

Oxidative Desulfurization of Dibenzothiophene Using Dawson Type Heteropoly Compounds/Tantalum as Catalyst

open access: yesIndonesian Journal of Chemistry, 2016
Catalyst (NH4)6[b-P2W18O62]/Ta has been synthesized by simple wet impregnation at 30-40 °C under atmospheric conditions using Dawson type polyoxometalate (NH4)6[b-P2W18O62] and tantalum. The catalyst was characterized by FTIR spectrophotometer, XRD, SEM,
Risfidian Mohadi   +4 more
doaj   +1 more source

NH4+ Toxicity, Which Is Mainly Determined by the High NH4+/K+ Ratio, Is Alleviated by CIPK23 in Arabidopsis

open access: yes, 2020
Ammonium (NH4+) toxicity is always accompanied by ion imbalances, and NH4+ and potassium (K+) exhibit a competitive correlation in their uptake and transport processes.
Shuaijun Deng   +10 more
core   +1 more source

The short-term effects of elevated CO2 and ammonium concentrations on physiological responses in Gracilariopsis lemaneiformis (Rhodophyta)

open access: yesFisheries and Aquatic Sciences, 2017
Ocean acidification (OA) and coastal eutrophication affect coastal marine organisms. We studied the physiological responses of Gracilariopsis lemaneiformis (Gracilariales, Rhodophyta) to increased concentrations of CO2 and NH4 +.
Jin Woo Kang   +4 more
doaj   +1 more source

Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption

open access: yesApplied Biological Chemistry, 2023
Ammonium ions (NH4 +) are commonly found in contaminated water and are a contributing factor to water eutrophication. Carbonized rice husk, derived from various biomass sources, possesses a porous structure, and its characteristics are influenced by the ...
Yun-Gu Kang   +5 more
doaj   +1 more source

The ammonium bromomercurates(II) (NH4)Hg5Br11 and (NH4)(4)HgBr6

open access: yes, 2006
The crystal structures of two ammonium bromomercurates(II), (NH4)Hg5Br11 (1) and (NH4)(4)HgBr6 (2), were determined from single-crystal X-ray diffraction data: 1: monoclinic, C2/m (no.
Pantenburg, I.   +5 more
core   +1 more source

Depletion of the heaviest stable N isotope is associated with NH4+/NH3 toxicity in NH4+-fed plants [PDF]

open access: yes, 2011
Background: In plants, nitrate (NO3-) nutrition gives rise to a natural N isotopic signature (δ15N), which correlates with the δ15N of the N source.
Maria A Martins-Loução   +26 more
core   +1 more source

Na+ - NH4+ CATION EXCHANGE STUDY ON TREATED ZEOLITIC VOLCANIC TUFF IN FIXED BED COLUMN

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2020
In this work, Na+ - NH4+ cation exchange process was studied on various samples of treated zeolitic volcanic tuff (ZVT). Irrespective of the treatment applied (washing, NaCl, acid, thermal), the Na+ concentration evolution closely mirrors the NH4 ...
Andrada MĂICĂNEANU, Horea BEDELEAN
doaj   +1 more source

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