Results 71 to 80 of about 413,222 (298)

Predictions and measurements of spark-ignition engine characteristics using ammonia and other fuels [PDF]

open access: yes, 1988
PhDThe project reported here involves the development of a computer model for determining the characteristics of a spark-ignition engine. The model incorporates detailed consideration of the combustion process -and includes calculations for heat ...
Mozafari-Varnusfadrani, Aliasghar
core   +4 more sources

Crystal structure of [Co(NH3)6][Co(CO)4]2

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
Hexaamminecobalt(II) bis[tetracarbonylcobaltate(-I)], [Co(NH3)6][Co(CO)4]2, was synthesized by reaction of liquid ammonia with Co2(CO)8. The CoII atom is coordinated by six ammine ligands.
Thomas G. Müller, Florian Kraus
doaj   +1 more source

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

open access: yesAdvanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li   +9 more
wiley   +1 more source

Potential Use of Waste in Electrocatalysis Using Foundry Sand as Electrocatalyst for the Hydrogen Evolution Reaction

open access: yesECS Advances
Approximately 13 million tons of foundry sand (FS), a waste from the metallurgic industry, are produced worldwide annually. Although several applications for this waste have been reported, there is a lack of research regarding its application in energy ...
Chubraider Xavier   +5 more
doaj   +1 more source

Research on thermal degradation and tensile properties of carbon fiber reinforced epoxy resin composites at elevated temperatures

open access: yesJournal of Materials Research and Technology
Carbon fiber reinforced epoxy resin composites (CFRCs) are widely used in the manufacture of high-pressure hydrogen storage cylinders. However, under accidental fire, these composite cylinders have a high failure risk since the elevated temperatures ...
Gai Huang   +4 more
doaj   +1 more source

Rural versus urban gaseous inorganic reactive nitrogen in the Indo-Gangetic plains (IGP) of India

open access: yesEnvironmental Research Letters, 2014
The present study reports on the abundance of reactive nitrogen (NH _3 and NO _2 ) at two sites, i.e. Okhla (urban site) in Delhi and Mai (rural site), located in the nearby state: Uttar Pradesh.
Saumya Singh, U C Kulshrestha
doaj   +1 more source

Ammonia toxicity to the brain [PDF]

open access: yesJournal of Inherited Metabolic Disease, 2012
AbstractHyperammonemia can be caused by various acquired or inherited disorders such as urea cycle defects. The brain is much more susceptible to the deleterious effects of ammonium in childhood than in adulthood. Hyperammonemia provokes irreversible damage to the developing central nervous system: cortical atrophy, ventricular enlargement and ...
Braissant, Olivier   +2 more
openaire   +4 more sources

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

Isolated Rhodium Atoms Activate Porous TiO2 for Enhanced Electrocatalytic Conversion of Nitrate to Ammonia

open access: yesAdvanced Science
The direct electrochemical reduction of nitrate to ammonia is an efficient and environmentally friendly technology, however, developing electrocatalysts with high activity and selectivity remains a great challenge.
Zhi Liang Zhao   +6 more
doaj   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

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