Results 31 to 40 of about 6,642 (220)

Direct Gravity‐Induced Modulation of Cardiac Conduction Pathways Evidenced Through Propagation Features in Electrophysiological Mapping

Advanced Materials Technologies, EarlyView.
A high‐density wearable body‐surface potential mapping array reveals how gravity reshapes cardiac conduction in real time. By resolving spatiotemporal delay patterns invisible to conventional ECG, the platform uncovers posture‐dependent electrophysiological adaptations across the thorax.
Ruben Ruiz‐Mateos Serrano, Matias L. Picchio, Daniele Mantione, David Mecerreyes, George G. Malliaras   +4 more
wiley   +1 more source

Gravity‐Tolerant In‐Flight 3D Bioprinting Enabled by Stereolithography for Space Tissue Engineering

Advanced Science, EarlyView.
A flight‐compliant, closed stereolithographic 3D bioprinting system enables robust fabrication of acellular and cell‐laden hydrogel constructs under varying gravitational conditions, including microgravity and hypergravity phases. Printed structures retain dimensional fidelity and high‐resolution features, while cell viability remains high ...
Bianca Lemke, Matthias R. Kollert, Tobias Lam, Tobias Thiele, Nicolas Göbel, Lisa R. Köhn, Gabriela Korus, Lutz Kloke, Georg N. Duda   +8 more
wiley   +1 more source

Epigenomics in an extraterrestrial environment: organ-specific alteration of DNA methylation and gene expression elicited by spaceflight in Arabidopsis thaliana

BMC Genomics, 2019
Background Plants adapted to diverse environments on Earth throughout their evolutionary history, and developed mechanisms to thrive in a variety of terrestrial habitats.
Mingqi Zhou, Natasha J. Sng, Collin E. LeFrois, Anna-Lisa Paul, Robert J. Ferl   +4 more
doaj   +1 more source

Autonomous Detection of Particles and Tracks in Optical Images

Earth and Space Science, 2020
When optical navigation images acquired by the OSIRIS‐REx (Origins, Spectral Interpretation, Resource Identification, and Security‐Regolith Explorer) mission revealed the periodic ejection of particles from asteroid (101955) Bennu, it became a mission ...
Andrew J. Liounis, Jeffrey L. Small, Jason C. Swenson, Joshua R. Lyzhoft, Benjamin W. Ashman, Kenneth M. Getzandanner, Michael C. Moreau, Coralie D. Adam, Jason M. Leonard, Derek S. Nelson, John Y. Pelgrift, Brent J. Bos, Steven R. Chesley, Carl W. Hergenrother, Dante S. Lauretta   +14 more
doaj   +1 more source

Rocket Science: The Effect of Spaceflight on Germination Physiology, Ageing, and Transcriptome of Eruca sativa Seeds

Life, 2020
In the ‘Rocket Science’ project, storage of Eruca sativa (salad rocket) seeds for six months on board the International Space Station resulted in delayed seedling establishment. Here we investigated the physiological and molecular mechanisms underpinning
Jake O. Chandler, Fabian B. Haas, Safina Khan, Laura Bowden, Michael Ignatz, Eugenia M. A. Enfissi, Frances Gawthrop, Alistair Griffiths, Paul D. Fraser, Stefan A. Rensing, Gerhard Leubner-Metzger   +10 more
doaj   +1 more source

Repeated Disuse Atrophy Imprints a Molecular Memory in Skeletal Muscle: Transcriptional Resilience in Young Adults and Susceptibility in Aged Muscle

Advanced Science, EarlyView.
Repeated disuse imprints a molecular memory in skeletal muscle, conferring transcriptional resilience in young adults but exaggerated susceptibility in aged muscle, driven by epigenetic regulation of aerobic metabolism, mitochondrial and NAD+ pathways.
Daniel C. Turner, Truls Raastad, Max Ullrich, Stian F. Christiansen, Hazel Sutherland, James Boot, Eva Wozniak, Charles Mein, Emilie Dalbram, Jonas T. Treebak, Daniel J. Owens, David C. Hughes, Sue C. Bodine, Jonathan C. Jarvis, Adam P. Sharples   +14 more
wiley   +1 more source

Preparation and properties of polyacrylonitrile pre-oxidized fiber/silicone rubber ablation composites

Cailiao gongcheng
Polyacrylonitrile pre-oxidized fiber（PANOF）is an emerging flame retardant material with low cost and high performance，showing a promising application potential as thermal protection materials in the aerospace field.Pretreated PANOF（t-PANOF）was obtained ...
YANG Rui, LIU Leichun, SHI Sheng, XU Haijian, CHEN Wenqi, CHEN Yi   +5 more
doaj   +1 more source

Future research directions to identify risks and mitigation strategies for neurostructural, ocular, and behavioral changes induced by human spaceflight: A NASA-ESA expert group consensus report

Frontiers in Neural Circuits, 2022
A team of experts on the effects of the spaceflight environment on the brain and eye (SANS: Spaceflight-Associated Neuro-ocular Syndrome) was convened by NASA and ESA to (1) review spaceflight-associated structural and functional changes of the human ...
Rachael D. Seidler, Claudia Stern, Mathias Basner, Alexander C. Stahn, Floris L. Wuyts, Floris L. Wuyts, Peter zu Eulenburg   +6 more
doaj   +1 more source

The ageing holobiont: crosstalk between telomere dynamics, oxidative stress and the gut microbiome

Biological Reviews, EarlyView.
ABSTRACT The gut tissue is at the frontline of early onset of ageing. It exhibits high cell turnover rates and rapid telomere shortening, which can have systemic effects on the developing or senescing organism. We conducted a literature review of studies on the crosstalk between telomere length dynamics, telomerase activity, oxidative stress, and gut ...
Michael L. Pepke, Søren B. Hansen, Morten T. Limborg   +2 more
wiley   +1 more source

Artificial Intelligence Frameworks to Detect and Investigate the Pathophysiology of Spaceflight Associated Neuro-Ocular Syndrome (SANS)

Brain Sciences, 2023
Spaceflight associated neuro-ocular syndrome (SANS) is a unique phenomenon that has been observed in astronauts who have undergone long-duration spaceflight (LDSF).
Joshua Ong, Ethan Waisberg, Mouayad Masalkhi, Sharif Amit Kamran, Kemper Lowry, Prithul Sarker, Nasif Zaman, Phani Paladugu, Alireza Tavakkoli, Andrew G. Lee   +9 more
doaj   +1 more source