Results 161 to 170 of about 69,897 (260)

Bed rest decreases resting skeletal muscle O2 uptake and resting energy expenditure in young and elderly subjects

open access: yesExperimental Physiology, Volume 111, Issue 5, Page 2599-2612, 1 May 2026.
Abstract A decrease in resting muscle O2 uptake (V̇O2m${\dot V_{{{\mathrm{O}}_2}{\mathrm{m}}}}$) described during bed rest (BR) could determine a decreased whole‐body resting energy expenditure (REE), potentially useful during prolonged spaceflights. Two groups of recreationally active men (young [Y], n = 8, age 23 ± 5 years; elderly [E], n = 10, age ...
Giovanni Baldassarre   +14 more
wiley   +1 more source

Exploring the Environmental Sustainability of Primary Al–Air Batteries for Long‐Term Energy Storage Applications

open access: yesChemSusChem, Volume 19, Issue 8, 28 April 2026.
An exploratory life cycle assessment compares aluminum–air batteries with gaseous and liquefied hydrogen for long‐term energy storage. The results reveal strong trade‐offs between climate benefits, resource burdens, and system efficiency, highlighting key hot spots and showing how decarbonized smelting and circular material flows can improve the ...
Hüseyin Ersoy   +6 more
wiley   +1 more source

Analytical study of hydrogen turbopump cycles for advanced nuclear rockets Progress report, Sep. 15, 1964 - Sep. 15, 1965 [PDF]

open access: yes
Hydrogen turbopump cycles for obtaining high engine inlet pressures in advanced nuclear rockets, and data on gaseous nuclear reactors and heavy gas ...
Latham, T. S.   +3 more
core   +1 more source

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