Results 181 to 190 of about 223,735 (247)

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

Delay Minimization for BAC-NOMA Offloading in UAV Networks. [PDF]

Sensors (Basel)
Li H, Yin Z, Chen C.
europepmc   +1 more source

Integrative cardiovascular dose–response to graded lower‐body negative pressure

Experimental Physiology, EarlyView.
ABSTRACT Lower‐body negative pressure (LBNP) has been posited as a potential spaceflight countermeasure to counteract the physiological deconditioning related to fluid shifts in microgravity. However, open questions remain regarding the magnitude of LBNP that should be applied.
Richard S. Whittle, Nathan Keller, Eric A. Hall, Safiyya Patanam, Bonnie J. Dunbar, Ana Diaz‐Artiles   +5 more
wiley   +1 more source

Inverse design of periodic cavities in anechoic coatings with gradient changes of radii and distances via a conditional generative adversarial network. [PDF]

Sci Rep
Sun Y, Fu J, Wu Y, Chen J, Tao M.
europepmc   +1 more source

Diffusion and physical constraints limit oxidative capacity, capillary supply and size of muscle fibres in mice and humans

Experimental Physiology, EarlyView.
Abstract It has been suggested that angiogenesis during skeletal muscle fibre hypertrophy allows escape from the ‘size constraint’, which is the inverse relationship between oxidative capacity and muscle fibre cross‐sectional area (FCSA). It is, however, not known whether there are any limitations to the combinations of FCSA, oxidative capacity and ...
Hans Degens, Guy A. M. Messa, Jason Tallis, Alessandra Bosutti, Tomas Venckunas, Ismail Adeniran, Rob C. I. Wüst, Paul W. Hendrickse   +7 more
wiley   +1 more source

An identification method of human joint interaction torque based on discrete EMG signals. [PDF]

Front Bioeng Biotechnol
Liao L, Yan D, Zhang G.
europepmc   +1 more source

Noradrenergic regulation of skeletal muscle oxygen pressures: Impact of heart failure with preserved ejection fraction and heat therapy

Experimental Physiology, EarlyView.
Abstract Attenuation of sympathetic vasoconstriction during exercise (functional sympatholysis) contributes to skeletal muscle oxygen delivery–utilization matching. However, the extent to which muscle contractions impact noradrenergic regulation of interstitial oxygen pressures (PO2is${P_{{{\mathrm{O}}_2}}}_{{\mathrm{is}}}$; the driving force for blood–
Edward T. N. Calvo, Jacob M. Pontorno, Benjamin Zeidler, Taciane M. M. Pejon, Michael D. Belbis, Scott K. Ferguson, Craig J. Goergen, Timothy P. Gavin, Bruno T. Roseguini, Igor A. Fernandes, Daniel M. Hirai   +10 more
wiley   +1 more source

Astronomical Observations in Support of Planetary Entry-Probes to the Outer Planets. [PDF]

Space Sci Rev
Buratti BJ, Orton GS, Roman MT, Momary T, Bauer JM.   +4 more
europepmc   +1 more source

Stable Nitrogen Isotope Analysis of Amino Acids by Orbitrap Mass Spectrometry: Application for Extraterrestrial Samples

Rapid Communications in Mass Spectrometry, Volume 39, Issue 23, 15 December 2025.
ABSTRACT Background Obtaining isotopic data on soluble organic compounds, such as amino acids, in extraterrestrial samples is crucial for understanding their origins, prebiotic chemistry, and potential contamination. Conventional GC‐IRMS requires grams of material to measure isotopic compositions, limiting the analysis of low‐concentration organics in ...
O. M. McIntosh, A. A. Baczynski, M. Matney, H. L. McLain, K. K. Farnsworth, J. P. Dworkin, D. P. Glavin, J. E. Elsila, H. Xie, K. H. Freeman   +9 more
wiley   +1 more source

Active twisting for adaptive droplet collection. [PDF]

Nat Comput Sci
Yang Y, Dai Z, Chen Y, Xu F.
europepmc   +1 more source