Results 81 to 90 of about 6,642 (220)

Synergistic interplay between radiation and microgravity in spaceflight-related immunological health risks

Immunity & Ageing
Spaceflight poses a myriad of environmental stressors to astronauts´ physiology including microgravity and radiation. The individual impacts of microgravity and radiation on the immune system have been extensively investigated, though a comprehensive ...
Anna Wadhwa, Maria Moreno-Villanueva, Brian Crucian, Honglu Wu   +3 more
doaj   +1 more source

ATHLETIC: An exoskeleton countermeasure exercise device for resistive and plyometric training in deep‐space missions

Experimental Physiology, EarlyView.
Abstract Prolonged exposure to weightlessness leads to loss of muscle and bone mass. Therefore, astronauts on board the International Space Station (ISS) currently perform mandatory daily exercises. ISS missions usually last 6 months, and future missions will become significantly longer when going, for example, to Mars.
Jonas Böcker, Jochen Zange, Torsten Siedel, Guillaume Fau, Sebastian Langner, Thomas Krueger, Jörn Rittweger   +6 more
wiley   +1 more source

Laser Ablation Sampling With Low-Power Plasma: A LA-MIP-MS Instrument for Spaceflight. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale Inductively coupled plasma (ICP) is a commonly used ion source for mass spectrometry‐based chemical analysis of a wide range of materials. Traditional ICP ion sources use high power (> 1000 W) and significant gas flow (> 10 L/min), rendering them unsuitable for spaceflight, as they are too resource‐intensive for planetary spacecraft.
Farcy BJ, Graham J, Raith M, Arevalo R, Taghioskoui M, Budinoff S, McAdam A, Lee J, Danell RM, Kaplan DA, Gundersen C, McDonough WF.   +11 more
europepmc   +2 more sources

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, EarlyView.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source

Dynamic changes in perivascular space morphology predict signs of spaceflight-associated neuro-ocular syndrome in bed rest

npj Microgravity
During long-duration spaceflight, astronauts experience headward fluid shifts and expansion of the cerebral perivascular spaces (PVS). A major limitation to our understanding of the changes in brain structure and physiology induced by spaceflight stems ...
Sutton B. Richmond, Rachael D. Seidler, Jeffrey J. Iliff, Daniel L. Schwartz, Madison Luther, Lisa C. Silbert, Scott J. Wood, Jacob J. Bloomberg, Edwin Mulder, Jessica K. Lee, Alberto De Luca, Juan Piantino   +11 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Microgravity‐induced changes in skeletal muscle and possible countermeasures: What we can learn from bed rest and human space studies

Experimental Physiology, EarlyView.
Abstract Despite exercise countermeasures to sustain health and performance in spaceflight, complete maintenance of muscle mass and functions in microgravity is still not possible for most astronauts. The principal cause of the limited effectiveness of existing exercise countermeasures is the difficulty in achieving full loading forces in space.
Alessandra Bosutti, Bergita Ganse, Nicola A. Maffiuletti, Rob C. I. Wüst, Gustav J. Strijkers, Andy Sanderson, Hans Degens   +6 more
wiley   +1 more source

The Metabolic and Physiological Responses to Spaceflight of a Lipopeptide‐Producing Bacillus subtilis

Microbial Biotechnology
Outer space is an extreme environment and the survival of many microorganisms after spaceflight is well established. However, adaptations of Bacillus subtilis to space stress, particularly metabolism, are largely unknown.
Wan‐Qi Qin, Yi‐Fan Liu, Jin‐Feng Liu, Lei Zhou, Shi‐Zhong Yang, Ji‐Dong Gu, Bo‐Zhong Mu   +6 more
doaj   +1 more source

Attitude Planning Method of Satellite Staring Imaging to Aerial Dynamic Target

Shanghai Jiaotong Daxue xuebao
Aimed at the staring imaging requirements of the low earth orbit (LEO) satellite array camera for aerial dynamic targets, a method for target position estimation and staring attitude planning based on image miss-distance of the satellite platform is ...
DU Ning, WU Shufan, CHEN Zhansheng, CHEN Wenhui, WANG Shiyao, XU Jiaguo, QIN Dongdong
doaj   +1 more source

Linking dynamic cerebral autoregulation and inhibitory executive function: Role of modifiable behaviours

Experimental Physiology, EarlyView.
Abstract Dynamic cerebral autoregulation (dCA) stabilises cerebral blood flow (CBF) against rapid fluctuations in perfusion pressure and may serve as a key physiological mediator of cognitive function. Inhibitory executive function, a core domain essential for goal‐directed behaviour, is influenced by modifiable lifestyle factors such as physical ...
Hayato Tsukamoto, Damian M. Bailey
wiley   +1 more source