Results 181 to 190 of about 1,207,824 (393)

Thermal stress analysis of a graded zirconia/metal gas path seal system for aircraft gas turbine engines [PDF]

open access: yes
A ceramic/metallic aircraft gas turbine outer gas path seal designed to enable improved engine performance is studied. Flexible numerical analysis schemes suitable for the determination of transient temperature profiles and thermal stress distributions ...
Taylor, C. M.
core   +1 more source

Encoding Magnetic Anisotropies in Digital Light Processing 3D Printing

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid magnetic device—combining a coaxial coil within a nested Halbach array—is presented, integrated into a DLP 3D printer to enable spatially resolved magnetic field control. This system enables complex, multimodal responses by programming liquid crystal elastomer resins for magnetic and thermal actuation, and by inducing electrically conductive ...
Eléonore Aïdonidis   +11 more
wiley   +1 more source

Silver Ion‐Mediated [hk1]‐Oriented Sb2Se3 Crystal Growth for Efficient Photoelectrochemical Hydrogen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang   +10 more
wiley   +1 more source

Development of low cost, high reliability sealing techniques for hybrid microcircuit packages, phase 2 [PDF]

open access: yes
Adhesives were evaluated to determine if they qualify for application to hybrid microcircuit packages. The effort consisted of the following: (1) seal gold-plated Kovar packages with selective adhesives and determine seal integrity after exposure to ...
Licari, J. J., Perkins, K. L.
core   +1 more source

Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams

open access: yesAdvanced Functional Materials, EarlyView.
Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan   +3 more
wiley   +1 more source

Seals and sealings

open access: yes
The glyptic assemblage from the Neo-Assyrian well in area C includes eight finds, three from the second to last layer, four from the one above it and one from a middle layer. These pieces from various filling layers of the shaft were retrieved at different elevations, having been thrown away at the time when the Babylonians in 605 BCE put an end to the
openaire   +1 more source

Pneuma-Seal Vacuum Seal [PDF]

open access: yes, 1990
Briggs, J.   +4 more
openaire   +2 more sources

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