Results 11 to 20 of about 19,941 (243)
Quantitative MRI changes in neck muscle size and composition following long-duration spaceflight. [PDF]
Exp PhysiolAbstract Long‐duration spaceflight poses several challenges to human health, including muscle loss and fat deposition. To mitigate these effects, exercise countermeasures are prescribed. This study aimed to measure neck muscle size and composition changes with long‐duration spaceflight using quantitative magnetic resonance imaging (MRI) and examine ...
Madrid Fuentes DA +4 more
europepmc +2 more sources
Skeletal Responses to Spaceflight [PDF]
Advances in Space Biology and Medicine, 1991 The role of gravity in the determination of bone structure is elucidated by observations in adult humans and juvenile animals during spaceflight. The primary response of bone tissue to microgravity is at the interface of the mineral and matrix in the process of biomineralization.
E R, Morey-Holton, S B, Arnaud
openaire +2 more sources
In situ synthesis of high dielectric constant GNPs/PBO nanocomposites with enhanced thermostability
IET Nanodielectrics, 2019 Graphite nanoparticles (GNPs) were introduced into poly(p-phenylene benzobisoxazole) (PBO) matrix to produce composites via in situ polymerisation. Films of various composites were fabricated through the solution casting method in methanesulfonic acid ...
Yi Chen +6 more
doaj +1 more source
Detections of Water Vapor Increase Over the North Polar Troughs on Mars as Observed by CRISM
Geophysical Research Letters, 2020 The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) onboard the Mars Reconnaissance Orbiter has been observing the north polar layered deposits (NPLD) of Mars. Polar wind circulations are instrumental in shaping the NPLD.
Alain SJ. Khayat +2 more
doaj +1 more source
Scientific Reports, 2022 Long-duration spaceflight impacts human physiology, including well documented immune system dysregulation. The space food system has the potential to serve as a countermeasure to maladaptive physiological changes during spaceflight.
Grace L. Douglas +15 more
doaj +1 more source
Frontiers in Plant Science, 2023 Spaceflight presents a unique environment with complex stressors, including microgravity and radiation, that can influence plant physiology at molecular levels.
Gbolaga O. Olanrewaju +9 more
doaj +1 more source
Root Skewing-Associated Genes Impact the Spaceflight Response of Arabidopsis thaliana
Frontiers in Plant Science, 2020 The observation that plant roots skew in microgravity recently refuted the long-held conviction that skewing was a gravity-dependent phenomenon. Further, spaceflight root skewing suggests that specific root morphologies and cell wall remodeling systems ...
Brandon Califar +13 more
doaj +1 more source
Blood, 1982 A consistent deficit in the red cell mass has been observed during both the American and Soviet orbital space flights and is sometimes referred to as “astronaut anemia.” This may be associated with a reduction in plasma volume so that the hematocrit and the hemoglobin concentration remain unchanged.
openaire +2 more sources
Alterations in Saliva and Plasma Cytokine Concentrations During Long-Duration Spaceflight
Frontiers in Immunology, 2021 Long-duration spaceflight is known to cause immune dysregulation in astronauts. Biomarkers of immune system function are needed to determine both the need for and effectiveness of potential immune countermeasures for astronauts.
Stephanie S. Krieger +9 more
doaj +1 more source
Vitamin K status in spaceflight and ground-based models of spaceflight [PDF]
Journal of Bone and Mineral Research, 2010 Abstract Bone loss is a well-documented change during and after long-duration spaceflight. Many types of countermeasures to bone loss have been proposed, including vitamin K supplementation. The objective of this series of studies was to measure change in vitamin K status in response to microgravity under a variety of spaceflight and ...
Zwart, Sara R +4 more
openaire +2 more sources