Results 91 to 100 of about 266,768 (294)

Carbon deposition in the Bosch process with ruthenium and ruthenium-iron alloy catalysts [PDF]

open access: yes
The effectiveness of ruthenium and the alloys 50Ru50Fe and 33Ru67Fe as alternatives to iron, nickel, and cobalt catalysts in recovering oxygen from metabolic carbon dioxide was investigated.
Manning, M. P.   +2 more
core   +1 more source

Advances in Layered Double Hydroxide (LDH)-Based Materials for Electrocatalytic Nitrogen Reduction to Ammonia: A Comprehensive Review

open access: yesNitrogen
Nitrogen (N2), constituting the majority of Earth’s atmosphere, remains indispensable for biological systems and underpins modern agriculture and industry.
Sayali S. Kulkarni   +3 more
doaj   +1 more source

Decision-making through sustainability [PDF]

open access: yes, 2016
From immemorial time, dams have contributed significantly for the progress of civilizations. For this reason, nowadays, there is a vast engineering heritage.
Aguado de Cea, Antonio   +1 more
core   +1 more source

Unraveling the high-energy emission components of gamma-ray binaries [PDF]

open access: yes, 2013
The high and very-high energy spectrum of gamma-ray binaries has become a challenge for all theoretical explanations since the detection of powerful, persistent GeV emission from LS 5039 and LS I +61 303 by Fermi/LAT.
Aharonian, Felix   +3 more
core   +1 more source

Sustainable nitrogen fixation: Agrochemical research in food production adapted to planetary limits

open access: yesMètode Science Studies Journal: Annual Review
Today's global food production depends on the fixation of atmospheric nitrogen by using the Haber-Bosch process. The application of this catalytic system laid the foundations for the development of industrial agriculture and led to an unprecedented ...
Lluís Pascual   +2 more
doaj   +1 more source

Ionic Liquids Enabling Revolutionary Closed-Loop Life Support [PDF]

open access: yes
Minimizing resupply from Earth is essential for future long duration manned missions. The current oxygen recovery system aboard the International Space Station is capable of recovering approximately 50% of the oxygen from metabolic carbon dioxide.
Abney, Morgan B.   +5 more
core   +1 more source

Automation of Bosch reaction for CO2 reduction [PDF]

open access: yes, 1972
System for collecting excess carbon dioxide in space cabin is described. System collects carbon dioxide exhaled by human inhabitants and decomposes gas into carbon and water by reaction with hydrogen in presence of catalyst. Diagram of equipment involved
Holmes, R. F.
core   +1 more source

Trabecular bone ontogeny of the human talus

open access: yesThe Anatomical Record, EarlyView.
Abstract Studies of trabecular ontogeny may provide insight into the factors that drive healthy bone development. There is a growing understanding of how the juvenile skeleton responds to these influences; however, gaps in our knowledge remain. This study aims to identify ontogenetic trabecular patterns and regional changes during development within ...
Rebecca A. G. Reid   +2 more
wiley   +1 more source

Evolving Maturation of the Series-Bosch System [PDF]

open access: yes
Human exploration missions to Mars and other destinations beyond low Earth orbit require highly robust, reliable, and maintainable life support systems that maximize recycling of water and oxygen. In order to meet this requirement, NASA has continued the
Abney, Morgan B.   +2 more
core   +1 more source

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