Results 81 to 90 of about 1,249,363 (328)
Influence of presence of ammonium in the hydrothermal illitization of smectite [PDF]
, 2017 During diagenesis, several reactions induce changes both in phyllosilicates and organic matter, which in basins associated to the production of hydrocarbons leads to ammonium fixation in illite and micas [1] and to dissolution induced by organic acids [
Bentabol-Manzanares, Maria Jose
core
Nitrogen regulation of protein–protein interactions and transcript levels of GlnK PII regulator and AmtB ammonium transporter homologs in Archaea [PDF]
, 2013 Gene homologs of GlnK PII regulators and AmtB-type ammonium transporters are often paired on prokaryotic genomes, suggesting these proteins share an ancient functional relationship.
Adler +53 more
core +2 more sources
Getting to grips with ammonium
eLife, 2013 A fluorescent sensor that can monitor levels of extracellular ammonium has been made by using a fused green fluorescent protein to detect conformational changes in ammonium transport proteins.
Jonathan A. Javitch, Yi Wang
openaire +4 more sources
Ammonium Nitrogen Tolerant Chlorella Strain Screening and Its Damaging Effects on Photosynthesis
Frontiers in Microbiology, 2019 Nitrogen is an essential nutrient element. Ammonium nitrogen, one of the most common nitrogen sources, is found in various habitats, especially wastewater. However, excessive amounts of ammonium nitrogen can be toxic to phytoplankton, higher plants, fish,
Jie Wang +5 more
semanticscholar +1 more source
Solid transformations as a variant of three-dimention nanotechnology [PDF]
, 2011 The given article discusses a variant of natural nanotechnology in a volume material under solid-phase transformation. The article provides results on acoustic splitting in ammonium oxide NH4ClO4 in the low-temperature region.
Belomestnykh, V.N., Tesleva, E.P.
core
The Transient Growth of Ammonium Chloride Dendrites [PDF]
, 2006 We report measurements of the initial growth and subsequent transient response of dendritic crystals of ammonium chloride grown from supersaturated aqueous solution. Starting from a small, nearly spherical seed held in unstable equilibrium, we lower the temperature to initiate growth.
arxiv +1 more source
Measurement of the Capillary Length for the Dendritic Growth of Ammonium Chloride [PDF]
Journal of Crystal Growth 506 (2019) 156-159, 2012 We report the results of a new method of measuring the capillary length for the dendritic crystal growth of non-faceted materials. This method uses a nearly spherical crystal held near unstable equilibrium in an oscillating temperature field. For the growth of ammonium chloride crystals from aqueous solution, previous published estimates of the ...
arxiv +1 more source
Ammonium imidazolium dichromate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2012 In the crystal structure of the title compound, (C3H5N2)(NH4)[Cr2O7], the anions and cations are linked through N—H...O hydrogen bonds, resulting in a three-dimensional structure which contains three kinds of layers parallel to (001). One layer contains imidazole cations, the other two layers the ammonium cations and dichromate anions.
openaire +4 more sources
The European Zoological Journal, 2020 This study examined the effect- of starvation on the chemical composition (total protein, crude fat, dry matter, ash) and the excretion of nitrogen (N) and phosphorus (P) of the Antarctic fish Notothenia coriiceps and Notothenia rossii.
K. Stepanowska, A. Nędzarek
doaj +1 more source
Ecology and physiology of anaerobic ammonium oxidizing bacteria.
Environmental Microbiology, 2016 Anaerobic ammonium oxidation (anammox) is a microbial process in which NH4 (+) is oxidized to N2 gas with NO2 (-) as an electron acceptor. The anammox process is mediated by bacterial members affiliated with the phylum Planctomycetes, which are ...
M. Oshiki, H. Satoh, S. Okabe
semanticscholar +1 more source