Results 301 to 310 of about 509,719 (323)

Low‐dose X‐ray radiation induces an adaptive response: A potential countermeasure to galactic cosmic radiation exposure

Experimental Physiology, EarlyView.
Abstract Space exploration involves many dangers including galactic cosmic radiation (GCR). This class of radiation includes high‐energy protons and heavy ionizing ions. NASA has defined GCR as a carcinogenic risk for long‐duration space missions. To date, no clear strategy has been developed to counter chronic GCR exposure.
Siena Edwards, Jessica Adams, Anastasia Tchernikov, John G. Edwards   +3 more
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, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

Plasticity of the heart in response to changes in physical activity

The Journal of Physiology, EarlyView.
Abstract figure legend The heart adapts to changes in physical activity, with inactivity (e.g. bed rest or spaceflight) causing cardiac atrophy and ventricular stiffening, and endurance exercise training leading to eccentric hypertrophy and improved ventricular compliance.
Eric T. Hedge, Tiffany L. Brazile, Richard L. Hughson, Benjamin D. Levine   +3 more
wiley   +1 more source

A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone)

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley   +1 more source

Preemptive iodide treatment in the event of a nuclear disaster: The prepper's guide to the galaxy

Experimental Physiology, EarlyView.
Per Karkov Cramon, Søren Holm, Ronan M. G. Berg   +2 more
wiley   +1 more source

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A population of red candidate massive galaxies ~600 Myr after the Big Bang

Nature, 2022
James Webb Space Telescope early release observations used to search for intrinsically red galaxies from the first 750 million years of cosmic history find six candidate massive galaxies, possibly including one of roughly 10^11 solar masses.
I. Labbé, P. V. van Dokkum, E. Nelson, R. Bezanson, K. Suess, J. Leja, G. Brammer, K. Whitaker, Elijah P. Mathews, M. Stefanon, Bingjie Wang   +10 more
semanticscholar   +1 more source

An Analytical Model for Spherical Galaxies and Bulges

, 1990
Un modele de masse pour les galaxies elliptiques, qui approche la loi R 1/4 de Vaucouleur, est developpe. Il est demontre que les proprietes intrinseques et les distributions de densite de ce modele peuvent etre evaluees analytiquement.
L. Hernquist
semanticscholar   +1 more source

Galaxies and Clusters of Galaxies [PDF]

, 2002
The leap into deep space outside our Milky Way Galaxy, into the realm of the distant galaxies (or the extragalactic nebulae, as they were formerly called), and the beginnings of a cosmology based on observations, will be considered throughout history to be one of the most important achievements of the 20th century.
Bodo Baschek, Albrecht Unsöld
openaire   +1 more source

LUMINOUS INFRARED GALAXIES

, 1996
▪ Abstract At luminosities above 1011 , infrared galaxies become the dominant population of extragalactic objects in the local Universe (z ≲ 0.3), being more numerous than optically selected starburst and Seyfert galaxies and quasi-stellar objects at ...
D. Sanders, I. Mirabel
semanticscholar   +1 more source