Results 11 to 20 of about 799,907 (311)

Ammonia toxicity: from head to toe? [PDF]

open access: yes, 2016
Ammonia is diffused and transported across all plasma membranes. This entails that hyperammonemia leads to an increase in ammonia in all organs and tissues.
Dasarathy, Srinivasan   +6 more
core   +1 more source

Estuarine Nitrifiers: New Players, Patterns and Processes [PDF]

open access: yes, 2010
Ever since the first descriptions of ammonia-oxidizing Bacteria by Winogradsky in the late 1800s, the metabolic capability of aerobic ammonia oxidation has been restricted to a phylogenetically narrow group of bacteria.
Bernhard, Anne E, Bollmann, Annette
core   +2 more sources

Recent progress towards the electrosynthesis of ammonia from sustainable resources [PDF]

open access: yes, 2017
Ammonia (NH3) is a key commodity chemical of vital importance for fertilisers. It is made on an industrial scale via the Haber Bosch process, which requires significant infrastructure to be in place such that ammonia is generally made in large ...
Shipman, Michael A., Symes, Mark D.
core   +1 more source

Biogas upgrading by chemical absorption using ammonia rich absorbents derived from wastewater [PDF]

open access: yes, 2014
The use of ammonia (NH3) rich wastewaters as an ecological chemical absorption solvent for the selective extraction of carbon dioxide (CO2) during biogas upgrading to ‘biomethane’ has been studied.
Jefferson, Bruce   +2 more
core   +1 more source

Experimental study on nitrification in a submerged aerated biofilter [PDF]

open access: yes, 2004
The aim of the present work was to evaluate the performance of a semi-pilot scale BAF in order to obtain a highly polished effluent in terms of removal of organic matter, suspended solids and ammonia and to observe the influence of temperature, pH and ...
Chiavola, Agostina   +3 more
core   +2 more sources

Radical Chemistry in a Femtosecond Laser Plasma: Photochemical Reduction of Ag+ in Liquid Ammonia Solution [PDF]

open access: yes, 2018
Plasmas with dense concentrations of reactive species such as hydrated electrons and hydroxyl radicals are generated from focusing intense femtosecond laser pulses into aqueous media. These radical species can reduce metal ions such as Au3+ to form metal
Ahsan, Syeda   +4 more
core   +3 more sources

γ-radiolysis of boric acid-lithium hydroxide-ammonia coolant

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2023
In this study, the γ-radiolysis of boric acid-lithium hydroxide-ammonia coolant was investigated under different conditions, including boric acid concentration, absorbed dose, and absorbed dose rate.
CAO Qi   +6 more
doaj   +1 more source

Research on the technical scheme of multi-stack common rail fuel cell engine based on the demand of commercial vehicle

open access: yesEnergy and AI
At present, most fuel cell engines are single-stack systems, and high-power single-stack systems have bottlenecks in meeting the power requirements of heavy-duty trucks, mainly because the increase in the single active area and the excessive number of ...
Ji Pu   +6 more
doaj   +1 more source

Numerical Modeling of Sublimation of Ammonium Carbamate Applied to Supply System of NOx Reductant

open access: yesEnergies, 2021
Recently, ammonium carbamate (AC) has attracted attention as a substitute for urea, which is a commonly used reductant for NOx emitted from combustion engines.
Sang-Hee Woo   +3 more
doaj   +1 more source

An in situ XAS study of the cobalt rhenium catalyst for ammonia synthesis [PDF]

open access: yes, 2018
A cobalt rhenium catalyst active for ammonia synthesis at 400 °C and ambient pressure was studied using in situ XAS to elucidate the reducibility and local environment of the two metals during reaction conditions.
Granlund Kirste, Karsten   +6 more
core   +3 more sources

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