Results 21 to 30 of about 96,700 (242)

Effect of helium as process gas on laser powder bed fusion of Ti-6Al-4V studied with operando diffraction and radiography

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, Steven Van Petegem, Eduard Hryha, Cynthia Sin Ting Chang, Samy Hocine, Helena Van Swygenhoven, Charlotte de Formanoir, Sophie Dubiez-Le Goff   +7 more
doaj   +1 more source

Defying Lunar Dust: A Revolutionary Helmet Design to Safeguard Astronauts’ Health in Long-Term Lunar Habitats

Aerospace
Lunar dust remains one of the most critical unresolved challenges to long-duration lunar missions. Its sharp, abrasive, and electrostatically charged particles are easily inhaled and can penetrate deep into the lungs, reaching the bloodstream and the ...
Christopher Salvino, Kenneth Altshuler, Paul Beatty, Drew DeJarnette, Jesse Ybanez, Hazel Obana, Edwin Osabel, Andrew Dummer, Eric Lutz, Moe Momayez   +9 more
doaj   +1 more source

Superfluid Helium Flow in Porous Media [PDF]

, 2013
Superfluid helium is primarily used in the field of applied superconductivity. Given the complexity of the magnet geometry and the scales involved, a real 3D simulation of heat transfer in such devices at the micro-channel scale is very difficult, even ...
Prat, Marc, Van Weelderen, Rob, Allain, Hervé, Quintard, Michel, Baudouy, Bertrand, Soulaine, Cyprien   +5 more
core  

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Linewidths in bound state resonances for helium scattering from Si(111)-(1x1)H [PDF]

, 2009
Helium-3 spin-echo measurements of resonant scattering from the Si(111)–(1 × 1)H surface, in the energy range 4–14 meV, are presented. The measurements have high energy resolution yet they reveal bound state resonance features with uniformly broad ...
Ellis, J., Hedgeland, H., Alexandrowicz, G., Knowling, J., Jardine, A.P., Allison, W., Tuddenham, F.E., Gil Alexandrowicz, MacLaren, D.A.   +8 more
core   +1 more source

Time‐restricted feeding prior to Mycobacterium tuberculosis infection reduces tissue CD4+ T cells with limited impact on bacterial clearance

FEBS Open Bio, EarlyView.
Time‐restricted feeding (TRF) in mice increased liver fatty acid oxidation and decreased fatty acid biosynthesis. These alterations persisted when TRF was discontinued and the host was infected with Mycobacterium tuberculosis. Pre‐exposure to TRF did not alter tissue (lung and spleen) mycobacterial burden but significantly reduced CD3+ T cells in lungs
Ashish Gupta, Nidhi Yadav, Subhasmita Das, R. Rajendra Kumar Reddy, Nupur Sharma, Amol Ratnakar Suryawanshi, Jaswinder Singh Maras, Ranjan Kumar Nanda   +7 more
wiley   +1 more source

The Recovery of Helium [PDF]

Science, 1922
n ...
openaire   +3 more sources

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Review of Membranes for Helium Separation and Purification

Membranes, 2017
Membrane gas separation has potential for the recovery and purification of helium, because the majority of membranes have selectivity for helium. This review reports on the current state of the research and patent literature for membranes undertaking ...
Colin A. Scholes, Ujjal K. Ghosh
doaj   +1 more source

Second Sound Shock Waves in Rotating Superfluid Helium [PDF]

, 1983
Second sound shock waves have been used to examine the breakdown of superfluidity in bulk He II. The maximum counterflow velocity achieved in this manner was measured at a variety of temperatures and pressures.
Torczynski, John Robert
core   +1 more source