Results 21 to 30 of about 8,506,446 (327)

Alterations in the Spectrum of Spontaneous Rifampicin-Resistance Mutations in the Bacillus subtilis rpoB Gene after Cultivation in the Human Spaceflight Environment [PDF]

Frontiers in Microbiology, 2018
The effect of Bacillus subtilis exposure to the human spaceflight environment on growth, mutagenic frequency, and spectrum of mutations to rifampicin resistance (RifR) was investigated. B. subtilis cells were cultivated in Biological Research in Canister-
P. Fajardo-Cavazos, Joshua D. Leehan, W. Nicholson   +2 more
semanticscholar   +2 more sources

Impacts of spaceflight experience on human brain structure

Scientific Reports, 2023
Spaceflight induces widespread changes in human brain morphology. It is unclear if these brain changes differ with varying mission duration or spaceflight experience history (i.e., novice or experienced, number of prior missions, time between missions ...
Heather R. McGregor, Kathleen E. Hupfeld, Ofer Pasternak, Nichole E. Beltran, Yiri E. De Dios, Jacob J. Bloomberg, Scott J. Wood, Ajitkumar P. Mulavara, Roy F. Riascos, Patricia A. Reuter-Lorenz, Rachael D. Seidler   +10 more
doaj   +2 more sources

Clonal Hematopoiesis Before, During, and After Human Spaceflight. [PDF]

Cell Rep, 2020
Mencia-Trinchant N, MacKay MJ, Chin C, Afshinnekoo E, Foox J, Meydan C, Butler D, Mozsary C, Vernice NA, Darby C, Schatz MC, Bailey SM, Melnick AM, Guzman ML, Bolton K, Braunstein LZ, Garrett-Bakelman F, Levine RL, Hassane DC, Mason CE.   +19 more
europepmc   +2 more sources

Cell-free DNA (cfDNA) and Exosome Profiling from a Year-Long Human Spaceflight Reveals Circulating Biomarkers. [PDF]

iScience, 2020
Bezdan D, Grigorev K, Meydan C, Pelissier Vatter FA, Cioffi M, Rao V, MacKay M, Nakahira K, Burnham P, Afshinnekoo E, Westover C, Butler D, Mozsary C, Donahoe T, Foox J, Mishra T, Lucotti S, Rana BK, Melnick AM, Zhang H, Matei I, Kelsen D, Yu K, Lyden DC, Taylor L, Bailey SM, Snyder MP, Garrett-Bakelman FE, Ossowski S, De Vlaminck I, Mason CE.   +30 more
europepmc   +2 more sources

Uncertainty Quantification of Thermophysical Property Measurement in Space and on Earth: A Study of Liquid Platinum Using Electrostatic Levitation

Journal of Astronomy and Space Sciences, 2023
A study of uncertainty analysis was conducted on four key thermophysical properties of molten Platinum using a noncontacting levitation technique. More specifically, this work demonstrates a detailed reporting of the uncertainties associated with the ...
Jannatun Nawer, Takehiko Ishikawa, Hirohisa Oda, Chihiro Koyama, Douglas M. Matson   +4 more
doaj   +1 more source

Uncertainty analysis and performance evaluation of thermophysical property measurement of liquid Au in microgravity

npj Microgravity, 2023
A new method for quantifying facility performance has been discussed in this study that encompasses uncertainties associated with thermophysical property measurement.
Jannatun Nawer, Takehiko Ishikawa, Hirohisa Oda, Hideki Saruwatari, Chihiro Koyama, Xiao Xiao, Stephan Schneider, Matthias Kolbe, Douglas M. Matson   +8 more
doaj   +1 more source

Toward an Etiology of Spaceflight Neuroplastic Syndrome: Evolutionary Science Leads to New Hypotheses and Program Priorities

NeuroSci, 2023
Evolutionary theory is applied to recent neuroscientific findings on factors associated with risk-and-reward systems, and consequently, aspects of human decision making in spaceflight.
Margaret Boone Rappaport, Christopher J. Corbally   +1 more
doaj   +1 more source

How spaceflight challenges human cardiovascular health [PDF]

European Journal of Preventive Cardiology, 2022
AbstractThe harsh environmental conditions in space, particularly weightlessness and radiation exposure, can negatively affect cardiovascular function and structure. In the future, preventive cardiology will be crucial in enabling safe space travel. Indeed, future space missions destined to the Moon and from there to Mars will create new challenges to ...
Jirak, P., Mirna, M., Rezar, R., Motloch, L.J., Lichtenauer, M., Jordan, J., Binneboessel, S., Tank, J., Limper, U., Jung, C.   +9 more
openaire   +3 more sources

The Cardiovascular System in Space: Focus on In Vivo and In Vitro Studies

Biomedicines, 2021
On Earth, humans are subjected to a gravitational force that has been an important determinant in human evolution and function. During spaceflight, astronauts are subjected to several hazards including a prolonged state of microgravity that induces a ...
Ronni Baran, Shannon Marchal, Sebastian Garcia Campos, Emil Rehnberg, Kevin Tabury, Bjorn Baselet, Markus Wehland, Daniela Grimm, Sarah Baatout   +8 more
doaj   +1 more source

Impact of diet on human nutrition, immune response, gut microbiome, and cognition in an isolated and confined mission environment

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, Diane DeKerlegand, Holly Dlouhy, Nathan Dumont-Leblond, Eden Fields, Martina Heer, Stephanie Krieger, Satish Mehta, Bridgette V. Rooney, Manolito G. Torralba, Sara E. Whiting, Brian Crucian, Hernan Lorenzi, Scott M. Smith, Millennia Young, Sara R. Zwart   +15 more
doaj   +1 more source