Results 141 to 150 of about 61,732 (357)
Transfusion Medicine, EarlyView.Abstract Background Sustaining a safe and sufficient blood supply requires not only recruiting first‐time donors but also retaining them over time. In Saudi Arabia, donor retention remains poorly understood, with limited data on return behavior, demographic influences, and temporal trends.
Wajnat A. Tounsi, Bushra S. Almalki
wiley +1 more source
Sixteenth Lunar and Planetary Science Conference. Press abstracts [PDF]
A broad range of topics concerned with lunar and planetary science are discussed. Topics among those included are, the sun, the planets, comets, meteorities, asteroids, satellites, space exploration, and the significance of these to ...
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Advances in AstronomyTo address the limitations of traditional navigation systems in lunar exploration missions regarding positioning accuracy and coverage, this study proposes a multi-objective optimization framework for the Lunar Navigation Satellite System (LNSS) to ...
Xiao Chen +4 more
doaj +1 more source
Transactions of the Institute of British Geographers, EarlyView.ABSTRACT AI assistants on spacecrafts. Netflix streamed through inter‐planetary communication networks. Colonies on Mars by 2050. While the glamorous public–private ventures into outer space curate discussions on the technical specificities of these proposed projects, this paper reorients discussions on such developments through critical frameworks of ...
Yung Au
wiley +1 more source
Women in space: A review of known physiological adaptations and health perspectives
Experimental Physiology, EarlyView.Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford +4 more
wiley +1 more source
Metamorphism of Venus as driver of crustal thickness and recycling
Nature CommunicationsThe composition and thickness of the venusian crust and their dependence on thermal gradients and geodynamic setting are not well constrained. Here, we use metamorphic phase transitions and the onset of melting to determine the maximum crustal thickness ...
Julia Semprich +4 more
doaj +1 more source
Experimental Physiology, EarlyView.Abstract Long‐duration spaceflight impacts essentially every system in the human body, resulting in multisystem deconditioning that might impair the health and performance of crewmembers, particularly on long‐duration exploration missions to Mars. In this review, we apply the sport science model of athlete monitoring, testing and training to astronauts;
Luke DeVirgiliis +8 more
wiley +1 more source
Experimental Physiology, EarlyView.Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr +2 more
wiley +1 more source
An Overview of the Volatiles Investigating Polar Exploration Rover (VIPER) Mission [PDF]
A critical goal to both science and exploration is to understand the form and location of lunar polar volatiles. The lateral and vertical distributions of these volatiles inform us of the processes that control the emplacement and retention of these ...
Andrews, Dan +7 more
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