Results 101 to 110 of about 930,497 (337)

Hypoxia Worsens Affective Responses and Feeling of Fatigue During Prolonged Bed Rest

open access: yesFrontiers in Psychology, 2018
Previous research, although limited, suggests that both hypoxia and bed rest influence psychological responses by exaggerating negative psychological responses and attenuating positive emotions.
Nektarios A. M. Stavrou   +6 more
doaj   +1 more source

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör   +9 more
wiley   +1 more source

An evaluation of intermittently inflated extremity cuffs in preventing the cardiovascular deconditioning of bedrest and water immersion [PDF]

open access: yes
Inflatable tourniquet effects on cardiovascular deconditioning during bed rest and water immersion studies on ...
Vogt, F. B.
core   +1 more source

Long Duration Head-Down Tilt Bed Rest Studies: Safety Considerations Regarding Vision Health [PDF]

open access: yes, 2012
Visual symptoms reported in astronauts returning from long duration missions in low Earth orbit, including hyperopic shift, choroidal folds, globe flattening and papilledema, are thought to be related to fluid shifts within the body due to microgravity ...
Cromwell, Ronita L.   +5 more
core   +2 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

The effect of prolonged simulated non- gravitational environment on mineral balance in the adult male, volume 1 Final report [PDF]

open access: yes
Effect of prolonged bed rest with simulated weightlessness on mineral balance in male adult - Vol.
Bayers, J. H.   +4 more
core   +1 more source

Fixed bed gasification of wood char: characterisation of a new continuous downdraft reactor [PDF]

open access: yes, 2009
A staged gasification process coupled with a gas engine is one of the most promising technologies for small and medium sized electricity production. The purpose of this work was to design and build new experimental equipment to characterise the wood char
Martin, Eric   +3 more
core  

The effect of supplemental oral phosphate on the bone mineral changes during prolonged bed rest [PDF]

open access: bronze, 1971
Stephen B. Hulley   +5 more
openalex   +1 more source

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