Results 81 to 90 of about 43,985 (306)

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

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, Philip N. Ainslie, Trevor Day   +2 more
wiley   +1 more source

Direct Contact Among Galactic Civilizations by Relativistic Interstellar Spaceflight [PDF]

, 1962
Direct contact among galactic populations by relativistic interstellar ...
Sagan, Carl
core   +1 more source

Optimization of spaceflight millimeter-wave impedance matching networks using laser trimming [PDF]

, 2021
Kai Parow-Souchon, David Cuadrado-Calle, Simon Rea, M. Henry, M. Merritt, Peter Hunyor, N. Brewster, L. Harman, C. Spindloe, P. Sykes, Peter G. Huggard, B. Moyna, Brian Ellison   +12 more
openalex   +1 more source

Interstellar Migration, the Population ‘Problem’ and the Climate Emergency

Critical Quarterly, EarlyView.
Anna Hartnell
wiley   +1 more source

The search for the ultimate exercise countermeasure to preserve crew health and ensure mission success in long‐duration spaceflight

Experimental Physiology, EarlyView.
Abstract The current understanding of crew health maintenance is founded upon decades of physiological research conducted in terrestrial spaceflight analogues and in low Earth orbit, particularly on the International Space Station. However, as we progress towards the Lunar Gateway and interplanetary missions, it is imperative that the tools employed to
Rodrigo Fernandez‐Gonzalo, Stefan Schneider, Martina Heer, Anna‐Maria Liphardt   +3 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

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, EarlyView.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source

Astronauts well-being and possibly anti-aging improved during long-duration spaceflight [PDF]

, 2021
Kuniaki Otsuka, Germaine Cornélissen, Satoshi Furukawa, Yutaka Kubo, Koichi Shibata, Koh Mizuno, Hiroshi Ohshima, Chiaki Mukai   +7 more
openalex   +1 more source

An experimentally informed computational model of neurovestibular adaptation to altered gravity

Experimental Physiology, EarlyView.
Abstract Transitions to altered gravity environments result in acute sensorimotor impairment for astronauts, leading to serious mission and safety risks in the crucial first moments in a new setting. Our understanding of the time course and severity of impairment in the early stages of adaptation remains limited and confounded by unmonitored head ...
Victoria G. Kravets, Torin K. Clark
wiley   +1 more source

Light has a principal role in the Arabidopsis transcriptomic response to the spaceflight environment

npj Microgravity
The Characterizing Arabidopsis Root Attractions (CARA) spaceflight experiment provides comparative transcriptome analyses of plants grown in both light and dark conditions within the same spaceflight. CARA compared three genotypes of Arabidopsis grown in
Mingqi Zhou, Robert J. Ferl, Anna-Lisa Paul   +2 more
doaj   +1 more source