Results 51 to 60 of about 601,537 (357)
Effect of helium pre- or postconditioning on signal transduction kinases in patients undergoing coronary artery bypass graft surgery [PDF]
, 2016 Background: The noble gas helium induces pre- and postconditioning in animals and humans. Volatile anesthetics induce cardioprotection in humans undergoing coronary artery bypass graft (CABG) surgery.
Brevoord, Daniel +9 more
core +7 more sources
Detectability of Light Dark Matter with Superfluid Helium. [PDF]
Physical Review Letters, 2016 We show that a two-excitation process in superfluid helium, combined with sensitivity to meV energy depositions, can probe dark matter down to the ∼keV warm dark matter mass limit.
K. Schutz, K. Zurek
semanticscholar +1 more source
A comparative study of single-particle cryo-EM with liquid-nitrogen and liquid-helium cooling
IUCrJ, 2019 Radiation damage is the most fundamental limitation for achieving high resolution in electron cryo-microscopy (cryo-EM) of biological samples. The effects of radiation damage are reduced by liquid-helium cooling, although the use of liquid helium is more
Olivia Pfeil-Gardiner +3 more
doaj +1 more source
Hydrogen-Triggered Type I X-ray Bursts in a Two-Zone Model [PDF]
Astrophys.J.661:468-476,2007, 2007 We use the two-zone model of Cooper & Narayan to study the onset and time evolution of hydrogen-triggered type I X-ray bursts on accreting neutron stars. At the lowest accretion rates, thermally unstable hydrogen burning ignites helium as well and produces a mixed hydrogen and helium burst.
arxiv +1 more source
Radiation-Induced Helium Bubbles in Metals
Materials, 2019 Helium (He) bubbles are typical radiation defects in structural materials in nuclear reactors after high dose energetic particle irradiation. In the past decades, extensive studies have been conducted to explore the dynamic evolution of He bubbles under ...
Shi-Hao Li, Jing-Ting Li, W. Han
semanticscholar +1 more source
The effects of He I λ10830 on helium abundance determinations [PDF]
, 2015 Observations of helium and hydrogen emission lines from metal-poor extragalactic H II regions, combined with estimates of metallicity, provide an independent method for determining the primordial helium abundance, Yp.
E. Aver, K. Olive, E. Skillman
semanticscholar +1 more source
Ceramics-Silikáty, 2019 Two corundum-based ceramic materials (C799 and C795) and one type of mullite ceramics (C610) have been tested for the production of components of technological circuits working with high-temperature helium and supercritical water.
Tomas Hlincik +4 more
doaj +1 more source
Applied Sciences, 2020 Massive underground storage of hydrogen could be a way that excess energy is produced in the future, provided that the risks of leakage of this highly flammable gas are managed. The ROSTOCK-H research project plans to simulate a sudden hydrogen leak into
Stéphane Lafortune +5 more
doaj +1 more source
European Journal of Materials, 2022 The utilisation of helium as process gas in laser powder bed fusion limits the generation of Ti-6Al-4V hot and incandescent spatters and enhances their cooling rate.
Camille Pauzon +7 more
doaj +1 more source